* ML403 gigabit ethernet bandwidth - 2.6 kernel
@ 2007-06-23 12:19 Mohammad Sadegh Sadri
2007-06-23 18:48 ` Ming Liu
2007-06-25 11:52 ` Bhupender Saharan
0 siblings, 2 replies; 13+ messages in thread
From: Mohammad Sadegh Sadri @ 2007-06-23 12:19 UTC (permalink / raw)
To: Andrei Konovalov, Linux PPC Linux PPC, Grant Likely
Dear all,
Recently we did a set of tests on performance of virtex 4FX hard TEMAC modu=
le using ML403
we studied all of the posts here carefully: these are the system characteri=
stics;
Board : ML403=20
EDK : EDK9.1SP2
Hard TEMAC version and PLTEMAC version are both 3.0.a
PPC clock frequency : 300MHz
Kernel : 2.6.21-rc7 , downloaded from grant's git tree some thing near one =
week ago
DMA type: 3 (sg dma)
DRE : enabled for TX and RX, (2)
CSUM offload is enabled for both of TX and RX
tx and rx fifo sizes : 131072 bits
the board comes up over NFS root file system completely and without any pro=
blems.=20
PC system used for these tests is : CPU P4 Dual Core, 3.4GHz , 2Gigabytes m=
emory, Dual gigabit ethernet port, running linux 2.6.21.3=20
We have tested the PC system band width and it can easily reach 966mbits/s =
when connected to the same PC. ( using the same cross cable used for ml403 =
test)
Netperf is compiled with TCP SEND FILE enabled, ( -DHAVE_SENDFILE)
(from board to PC)
netperf -t TCP_SENDFILE -H 10.10.10.250 -F /boot/zImage.elf -- -m 16384 -s =
87380 -S 87380 =20
the measured bandwidth for this test was just 40.66Mbits. =20
It is also true for netperf from PC to board.
we do not have any more idea about what we should do to improve the bandwid=
th.=20
any help or ideas is appreciated...
_________________________________________________________________
Connect to the next generation of MSN Messenger=A0
http://imagine-msn.com/messenger/launch80/default.aspx?locale=3Den-us&sourc=
e=3Dwlmailtagline=
^ permalink raw reply [flat|nested] 13+ messages in thread
* RE: ML403 gigabit ethernet bandwidth - 2.6 kernel
2007-06-23 12:19 Mohammad Sadegh Sadri
@ 2007-06-23 18:48 ` Ming Liu
2007-06-25 11:52 ` Bhupender Saharan
1 sibling, 0 replies; 13+ messages in thread
From: Ming Liu @ 2007-06-23 18:48 UTC (permalink / raw)
To: mamsadegh, akonovalov, linuxppc-embedded, grant.likely
Dear Mohammad,
There are some parameters which could be adjusted to improve the
performance. They are: TX and RX_Threshold TX and RX_waitbound. In my
system, we use TX_Threshold=16 and Rx_Threshold=8 and both waitbound=1.
Also Jumbo frame of 8982 could be enable.
Try those hints and share your improvement with us.
BR
Ming
>From: Mohammad Sadegh Sadri <mamsadegh@hotmail.com>
>To: Andrei Konovalov <akonovalov@ru.mvista.com>, Linux PPC Linux
PPC<linuxppc-embedded@ozlabs.org>, Grant Likely <grant.likely@secretlab.ca>
>Subject: ML403 gigabit ethernet bandwidth - 2.6 kernel
>Date: Sat, 23 Jun 2007 12:19:12 +0000
>
>
>Dear all,
>
>Recently we did a set of tests on performance of virtex 4FX hard TEMAC
module using ML403
>
>we studied all of the posts here carefully: these are the system
characteristics;
>
>Board : ML403
>EDK : EDK9.1SP2
>Hard TEMAC version and PLTEMAC version are both 3.0.a
>PPC clock frequency : 300MHz
>Kernel : 2.6.21-rc7 , downloaded from grant's git tree some thing near one
week ago
>DMA type: 3 (sg dma)
>DRE : enabled for TX and RX, (2)
>CSUM offload is enabled for both of TX and RX
>tx and rx fifo sizes : 131072 bits
>
>the board comes up over NFS root file system completely and without any
problems.
>
>PC system used for these tests is : CPU P4 Dual Core, 3.4GHz , 2Gigabytes
memory, Dual gigabit ethernet port, running linux 2.6.21.3
>We have tested the PC system band width and it can easily reach 966mbits/s
when connected to the same PC. ( using the same cross cable used for ml403
test)
>
>Netperf is compiled with TCP SEND FILE enabled, ( -DHAVE_SENDFILE)
>
>(from board to PC)
>netperf -t TCP_SENDFILE -H 10.10.10.250 -F /boot/zImage.elf -- -m 16384 -s
87380 -S 87380
>
>the measured bandwidth for this test was just 40.66Mbits.
>It is also true for netperf from PC to board.
>
>we do not have any more idea about what we should do to improve the
bandwidth.
>any help or ideas is appreciated...
>
>_________________________________________________________________
>Connect to the next generation of MSN
Messenger?>http://imagine-msn.com/messenger/launch80/default.aspx?locale=en-us&source=wlmailtagline
>_______________________________________________
>Linuxppc-embedded mailing list
>Linuxppc-embedded@ozlabs.org
>https://ozlabs.org/mailman/listinfo/linuxppc-embedded
_________________________________________________________________
免费下载 MSN Explorer: http://explorer.msn.com/lccn/
^ permalink raw reply [flat|nested] 13+ messages in thread
* RE: ML403 gigabit ethernet bandwidth - 2.6 kernel
@ 2007-06-23 19:08 Mohammad Sadegh Sadri
2007-06-23 19:10 ` Ming Liu
0 siblings, 1 reply; 13+ messages in thread
From: Mohammad Sadegh Sadri @ 2007-06-23 19:08 UTC (permalink / raw)
To: Ming Liu, akonovalov, linuxppc-embedded, grant.likely
Dear Ming,
Really thanks for reply,
about thresholds and waitbound OK! I'll adjust them in adapter.c ,
but what about enabling jumbo frames? should I do any thing special to enable Jumbo fram support?
we were thinking that it is enabled by default. Is it?
thanks
----------------------------------------
> From: eemingliu@hotmail.com
> To: mamsadegh@hotmail.com; akonovalov@ru.mvista.com; linuxppc-embedded@ozlabs.org; grant.likely@secretlab.ca
> Subject: RE: ML403 gigabit ethernet bandwidth - 2.6 kernel
> Date: Sat, 23 Jun 2007 18:48:19 +0000
>
> Dear Mohammad,
> There are some parameters which could be adjusted to improve the
> performance. They are: TX and RX_Threshold TX and RX_waitbound. In my
> system, we use TX_Threshold=16 and Rx_Threshold=8 and both waitbound=1.
>
> Also Jumbo frame of 8982 could be enable.
>
> Try those hints and share your improvement with us.
>
> BR
> Ming
>
> >From: Mohammad Sadegh Sadri
> >To: Andrei Konovalov , Linux PPC Linux
> PPC, Grant Likely
> >Subject: ML403 gigabit ethernet bandwidth - 2.6 kernel
> >Date: Sat, 23 Jun 2007 12:19:12 +0000
> >
> >
> >Dear all,
> >
> >Recently we did a set of tests on performance of virtex 4FX hard TEMAC
> module using ML403
> >
> >we studied all of the posts here carefully: these are the system
> characteristics;
> >
> >Board : ML403
> >EDK : EDK9.1SP2
> >Hard TEMAC version and PLTEMAC version are both 3.0.a
> >PPC clock frequency : 300MHz
> >Kernel : 2.6.21-rc7 , downloaded from grant's git tree some thing near one
> week ago
> >DMA type: 3 (sg dma)
> >DRE : enabled for TX and RX, (2)
> >CSUM offload is enabled for both of TX and RX
> >tx and rx fifo sizes : 131072 bits
> >
> >the board comes up over NFS root file system completely and without any
> problems.
> >
> >PC system used for these tests is : CPU P4 Dual Core, 3.4GHz , 2Gigabytes
> memory, Dual gigabit ethernet port, running linux 2.6.21.3
> >We have tested the PC system band width and it can easily reach 966mbits/s
> when connected to the same PC. ( using the same cross cable used for ml403
> test)
> >
> >Netperf is compiled with TCP SEND FILE enabled, ( -DHAVE_SENDFILE)
> >
> >(from board to PC)
> >netperf -t TCP_SENDFILE -H 10.10.10.250 -F /boot/zImage.elf -- -m 16384 -s
> 87380 -S 87380
> >
> >the measured bandwidth for this test was just 40.66Mbits.
> >It is also true for netperf from PC to board.
> >
> >we do not have any more idea about what we should do to improve the
> bandwidth.
> >any help or ideas is appreciated...
> >
> >_________________________________________________________________
> >Connect to the next generation of MSN
> Messenger?>http://imagine-msn.com/messenger/launch80/default.aspx?locale=en-us&source=wlmailtagline
>
> >_______________________________________________
> >Linuxppc-embedded mailing list
> >Linuxppc-embedded@ozlabs.org
> >https://ozlabs.org/mailman/listinfo/linuxppc-embedded
>
> _________________________________________________________________
> 免费下载 MSN Explorer: http://explorer.msn.com/lccn/
>
_________________________________________________________________
News, entertainment and everything you care about at Live.com. Get it now!
http://www.live.com/getstarted.aspx
^ permalink raw reply [flat|nested] 13+ messages in thread
* RE: ML403 gigabit ethernet bandwidth - 2.6 kernel
2007-06-23 19:08 Mohammad Sadegh Sadri
@ 2007-06-23 19:10 ` Ming Liu
0 siblings, 0 replies; 13+ messages in thread
From: Ming Liu @ 2007-06-23 19:10 UTC (permalink / raw)
To: mamsadegh, akonovalov, linuxppc-embedded, grant.likely
Use the following command in Linux please:
ifconfig eth0 mtu 8982
As well you should do that on your PC in the measurement.
Ming
>From: Mohammad Sadegh Sadri <mamsadegh@hotmail.com>
>To: Ming Liu <eemingliu@hotmail.com>,
<akonovalov@ru.mvista.com>,<linuxppc-embedded@ozlabs.org>,
<grant.likely@secretlab.ca>
>Subject: RE: ML403 gigabit ethernet bandwidth - 2.6 kernel
>Date: Sat, 23 Jun 2007 19:08:29 +0000
>
>
>Dear Ming,
>
>Really thanks for reply,
>
>about thresholds and waitbound OK! I'll adjust them in adapter.c ,
>
>but what about enabling jumbo frames? should I do any thing special to
enable Jumbo fram support?
>
>we were thinking that it is enabled by default. Is it?
>
>thanks
>
>
>
>
>----------------------------------------
> > From: eemingliu@hotmail.com
> > To: mamsadegh@hotmail.com; akonovalov@ru.mvista.com;
linuxppc-embedded@ozlabs.org; grant.likely@secretlab.ca
> > Subject: RE: ML403 gigabit ethernet bandwidth - 2.6 kernel
> > Date: Sat, 23 Jun 2007 18:48:19 +0000
> >
> > Dear Mohammad,
> > There are some parameters which could be adjusted to improve the
> > performance. They are: TX and RX_Threshold TX and RX_waitbound. In my
> > system, we use TX_Threshold=16 and Rx_Threshold=8 and both waitbound=1.
> >
> > Also Jumbo frame of 8982 could be enable.
> >
> > Try those hints and share your improvement with us.
> >
> > BR
> > Ming
> >
> > >From: Mohammad Sadegh Sadri
> > >To: Andrei Konovalov , Linux PPC Linux
> > PPC, Grant Likely
> > >Subject: ML403 gigabit ethernet bandwidth - 2.6 kernel
> > >Date: Sat, 23 Jun 2007 12:19:12 +0000
> > >
> > >
> > >Dear all,
> > >
> > >Recently we did a set of tests on performance of virtex 4FX hard TEMAC
> > module using ML403
> > >
> > >we studied all of the posts here carefully: these are the system
> > characteristics;
> > >
> > >Board : ML403
> > >EDK : EDK9.1SP2
> > >Hard TEMAC version and PLTEMAC version are both 3.0.a
> > >PPC clock frequency : 300MHz
> > >Kernel : 2.6.21-rc7 , downloaded from grant's git tree some thing near
one
> > week ago
> > >DMA type: 3 (sg dma)
> > >DRE : enabled for TX and RX, (2)
> > >CSUM offload is enabled for both of TX and RX
> > >tx and rx fifo sizes : 131072 bits
> > >
> > >the board comes up over NFS root file system completely and without
any
> > problems.
> > >
> > >PC system used for these tests is : CPU P4 Dual Core, 3.4GHz ,
2Gigabytes
> > memory, Dual gigabit ethernet port, running linux 2.6.21.3
> > >We have tested the PC system band width and it can easily reach
966mbits/s
> > when connected to the same PC. ( using the same cross cable used for
ml403
> > test)
> > >
> > >Netperf is compiled with TCP SEND FILE enabled, ( -DHAVE_SENDFILE)
> > >
> > >(from board to PC)
> > >netperf -t TCP_SENDFILE -H 10.10.10.250 -F /boot/zImage.elf -- -m
16384 -s
> > 87380 -S 87380
> > >
> > >the measured bandwidth for this test was just 40.66Mbits.
> > >It is also true for netperf from PC to board.
> > >
> > >we do not have any more idea about what we should do to improve the
> > bandwidth.
> > >any help or ideas is appreciated...
> > >
> > >_________________________________________________________________
> > >Connect to the next generation of MSN
> >
Messenger?>http://imagine-msn.com/messenger/launch80/default.aspx?locale=en-us&source=wlmailtagline
> >
> > >_______________________________________________
> > >Linuxppc-embedded mailing list
> > >Linuxppc-embedded@ozlabs.org
> > >https://ozlabs.org/mailman/listinfo/linuxppc-embedded
> >
> > _________________________________________________________________
> > 免费下载 MSN Explorer: http://explorer.msn.com/lccn/
> >
>
>_________________________________________________________________
>News, entertainment and everything you care about at Live.com. Get it now!
>http://www.live.com/getstarted.aspx
_________________________________________________________________
免费下载 MSN Explorer: http://explorer.msn.com/lccn/
^ permalink raw reply [flat|nested] 13+ messages in thread
* RE: ML403 gigabit ethernet bandwidth - 2.6 kernel
@ 2007-06-24 14:36 Mohammad Sadegh Sadri
2007-06-25 10:03 ` Ming Liu
0 siblings, 1 reply; 13+ messages in thread
From: Mohammad Sadegh Sadri @ 2007-06-24 14:36 UTC (permalink / raw)
To: eemingliu; +Cc: akonovalov, linuxppc-embedded
Dear Ming
We have changed our system characteristics to have TX_THRESHOLD=16 and RX_THRESHOLD=8 and in addition we enabled jumbo frames of 8982 bytes.
The results are as follows:
PC-->ML403
TCP_SENDFILE : 38Mbps
ML403--->PC
TCP_SENDFILE: 155Mbps
The transfer rate from ML403 to PC has improved by a factor of 2,
I see on the posts here in the mailing list that you have reached a band width of 301Mbps.
we are also wondering why we do not have any improve in PC to ML403 bandwidth
also we observed if TX_THRESHOLD=16 and RX_THRESHOLD=2, then PC to ML403 bandwidth will increase to some thing near 60Mbps.
----------------------------------------
> From: eemingliu@hotmail.com
> To: mamsadegh@hotmail.com; akonovalov@ru.mvista.com; linuxppc-embedded@ozlabs.org; grant.likely@secretlab.ca
> Subject: RE: ML403 gigabit ethernet bandwidth - 2.6 kernel
> Date: Sat, 23 Jun 2007 19:10:16 +0000
>
> Use the following command in Linux please:
>
> ifconfig eth0 mtu 8982
>
> As well you should do that on your PC in the measurement.
>
> Ming
>
>
> >From: Mohammad Sadegh Sadri
> >To: Ming Liu ,
> ,,
>
> >Subject: RE: ML403 gigabit ethernet bandwidth - 2.6 kernel
> >Date: Sat, 23 Jun 2007 19:08:29 +0000
> >
> >
> >Dear Ming,
> >
> >Really thanks for reply,
> >
> >about thresholds and waitbound OK! I'll adjust them in adapter.c ,
> >
> >but what about enabling jumbo frames? should I do any thing special to
> enable Jumbo fram support?
> >
> >we were thinking that it is enabled by default. Is it?
> >
> >thanks
> >
> >
> >
> >
> >----------------------------------------
> > > From: eemingliu@hotmail.com
> > > To: mamsadegh@hotmail.com; akonovalov@ru.mvista.com;
> linuxppc-embedded@ozlabs.org; grant.likely@secretlab.ca
> > > Subject: RE: ML403 gigabit ethernet bandwidth - 2.6 kernel
> > > Date: Sat, 23 Jun 2007 18:48:19 +0000
> > >
> > > Dear Mohammad,
> > > There are some parameters which could be adjusted to improve the
> > > performance. They are: TX and RX_Threshold TX and RX_waitbound. In my
> > > system, we use TX_Threshold=16 and Rx_Threshold=8 and both waitbound=1.
> > >
> > > Also Jumbo frame of 8982 could be enable.
> > >
> > > Try those hints and share your improvement with us.
> > >
> > > BR
> > > Ming
> > >
> > > >From: Mohammad Sadegh Sadri
> > > >To: Andrei Konovalov , Linux PPC Linux
> > > PPC, Grant Likely
> > > >Subject: ML403 gigabit ethernet bandwidth - 2.6 kernel
> > > >Date: Sat, 23 Jun 2007 12:19:12 +0000
> > > >
> > > >
> > > >Dear all,
> > > >
> > > >Recently we did a set of tests on performance of virtex 4FX hard TEMAC
> > > module using ML403
> > > >
> > > >we studied all of the posts here carefully: these are the system
> > > characteristics;
> > > >
> > > >Board : ML403
> > > >EDK : EDK9.1SP2
> > > >Hard TEMAC version and PLTEMAC version are both 3.0.a
> > > >PPC clock frequency : 300MHz
> > > >Kernel : 2.6.21-rc7 , downloaded from grant's git tree some thing near
> one
> > > week ago
> > > >DMA type: 3 (sg dma)
> > > >DRE : enabled for TX and RX, (2)
> > > >CSUM offload is enabled for both of TX and RX
> > > >tx and rx fifo sizes : 131072 bits
> > > >
> > > >the board comes up over NFS root file system completely and without
> any
> > > problems.
> > > >
> > > >PC system used for these tests is : CPU P4 Dual Core, 3.4GHz ,
> 2Gigabytes
> > > memory, Dual gigabit ethernet port, running linux 2.6.21.3
> > > >We have tested the PC system band width and it can easily reach
> 966mbits/s
> > > when connected to the same PC. ( using the same cross cable used for
> ml403
> > > test)
> > > >
> > > >Netperf is compiled with TCP SEND FILE enabled, ( -DHAVE_SENDFILE)
> > > >
> > > >(from board to PC)
> > > >netperf -t TCP_SENDFILE -H 10.10.10.250 -F /boot/zImage.elf -- -m
> 16384 -s
> > > 87380 -S 87380
> > > >
> > > >the measured bandwidth for this test was just 40.66Mbits.
> > > >It is also true for netperf from PC to board.
> > > >
> > > >we do not have any more idea about what we should do to improve the
> > > bandwidth.
> > > >any help or ideas is appreciated...
> > > >
> > > >_________________________________________________________________
> > > >Connect to the next generation of MSN
> > >
> Messenger?>http://imagine-msn.com/messenger/launch80/default.aspx?locale=en-us&source=wlmailtagline
>
> > >
> > > >_______________________________________________
> > > >Linuxppc-embedded mailing list
> > > >Linuxppc-embedded@ozlabs.org
> > > >https://ozlabs.org/mailman/listinfo/linuxppc-embedded
> > >
> > > _________________________________________________________________
> > > 免费下载 MSN Explorer: http://explorer.msn.com/lccn/
> > >
> >
> >_________________________________________________________________
> >News, entertainment and everything you care about at Live.com. Get it now!
> >http://www.live.com/getstarted.aspx
>
> _________________________________________________________________
> 免费下载 MSN Explorer: http://explorer.msn.com/lccn/
>
_________________________________________________________________
Discover the new Windows Vista
http://search.msn.com/results.aspx?q=windows+vista&mkt=en-US&form=QBRE
^ permalink raw reply [flat|nested] 13+ messages in thread
* RE: ML403 gigabit ethernet bandwidth - 2.6 kernel
2007-06-24 14:36 Mohammad Sadegh Sadri
@ 2007-06-25 10:03 ` Ming Liu
0 siblings, 0 replies; 13+ messages in thread
From: Ming Liu @ 2007-06-25 10:03 UTC (permalink / raw)
To: mamsadegh; +Cc: akonovalov, linuxppc-embedded
Dear Mohammad,
>The results are as follows:
>PC-->ML403
>TCP_SENDFILE : 38Mbps
>
>ML403--->PC
>TCP_SENDFILE: 155Mbps
This result is unreasonable. Because PC is more powerful than your board,
so PC->board should be faster than board->PC.
>The transfer rate from ML403 to PC has improved by a factor of 2,
>I see on the posts here in the mailing list that you have reached a band
width of 301Mbps.
Yes, with all features which could improve performance enabled, we can get
around 300Mbps for TCP transfer. one more hint, did you enable caches on
your system? perhaps it will help. Anyway, double check your hardware
design to make sure all features are enabled.That's all I can suggest.
BR
Ming
>
>
>
>
>----------------------------------------
> > From: eemingliu@hotmail.com
> > To: mamsadegh@hotmail.com; akonovalov@ru.mvista.com;
linuxppc-embedded@ozlabs.org; grant.likely@secretlab.ca
> > Subject: RE: ML403 gigabit ethernet bandwidth - 2.6 kernel
> > Date: Sat, 23 Jun 2007 19:10:16 +0000
> >
> > Use the following command in Linux please:
> >
> > ifconfig eth0 mtu 8982
> >
> > As well you should do that on your PC in the measurement.
> >
> > Ming
> >
> >
> > >From: Mohammad Sadegh Sadri
> > >To: Ming Liu ,
> > ,,
> >
> > >Subject: RE: ML403 gigabit ethernet bandwidth - 2.6 kernel
> > >Date: Sat, 23 Jun 2007 19:08:29 +0000
> > >
> > >
> > >Dear Ming,
> > >
> > >Really thanks for reply,
> > >
> > >about thresholds and waitbound OK! I'll adjust them in adapter.c ,
> > >
> > >but what about enabling jumbo frames? should I do any thing special to
> > enable Jumbo fram support?
> > >
> > >we were thinking that it is enabled by default. Is it?
> > >
> > >thanks
> > >
> > >
> > >
> > >
> > >----------------------------------------
> > > > From: eemingliu@hotmail.com
> > > > To: mamsadegh@hotmail.com; akonovalov@ru.mvista.com;
> > linuxppc-embedded@ozlabs.org; grant.likely@secretlab.ca
> > > > Subject: RE: ML403 gigabit ethernet bandwidth - 2.6 kernel
> > > > Date: Sat, 23 Jun 2007 18:48:19 +0000
> > > >
> > > > Dear Mohammad,
> > > > There are some parameters which could be adjusted to improve the
> > > > performance. They are: TX and RX_Threshold TX and RX_waitbound. In
my
> > > > system, we use TX_Threshold=16 and Rx_Threshold=8 and both
waitbound=1.
> > > >
> > > > Also Jumbo frame of 8982 could be enable.
> > > >
> > > > Try those hints and share your improvement with us.
> > > >
> > > > BR
> > > > Ming
> > > >
> > > > >From: Mohammad Sadegh Sadri
> > > > >To: Andrei Konovalov , Linux PPC Linux
> > > > PPC, Grant Likely
> > > > >Subject: ML403 gigabit ethernet bandwidth - 2.6 kernel
> > > > >Date: Sat, 23 Jun 2007 12:19:12 +0000
> > > > >
> > > > >
> > > > >Dear all,
> > > > >
> > > > >Recently we did a set of tests on performance of virtex 4FX hard
TEMAC
> > > > module using ML403
> > > > >
> > > > >we studied all of the posts here carefully: these are the system
> > > > characteristics;
> > > > >
> > > > >Board : ML403
> > > > >EDK : EDK9.1SP2
> > > > >Hard TEMAC version and PLTEMAC version are both 3.0.a
> > > > >PPC clock frequency : 300MHz
> > > > >Kernel : 2.6.21-rc7 , downloaded from grant's git tree some thing
near
> > one
> > > > week ago
> > > > >DMA type: 3 (sg dma)
> > > > >DRE : enabled for TX and RX, (2)
> > > > >CSUM offload is enabled for both of TX and RX
> > > > >tx and rx fifo sizes : 131072 bits
> > > > >
> > > > >the board comes up over NFS root file system completely and
without
> > any
> > > > problems.
> > > > >
> > > > >PC system used for these tests is : CPU P4 Dual Core, 3.4GHz ,
> > 2Gigabytes
> > > > memory, Dual gigabit ethernet port, running linux 2.6.21.3
> > > > >We have tested the PC system band width and it can easily reach
> > 966mbits/s
> > > > when connected to the same PC. ( using the same cross cable used
for
> > ml403
> > > > test)
> > > > >
> > > > >Netperf is compiled with TCP SEND FILE enabled, ( -DHAVE_SENDFILE)
> > > > >
> > > > >(from board to PC)
> > > > >netperf -t TCP_SENDFILE -H 10.10.10.250 -F /boot/zImage.elf -- -m
> > 16384 -s
> > > > 87380 -S 87380
> > > > >
> > > > >the measured bandwidth for this test was just 40.66Mbits.
> > > > >It is also true for netperf from PC to board.
> > > > >
> > > > >we do not have any more idea about what we should do to improve
the
> > > > bandwidth.
> > > > >any help or ideas is appreciated...
> > > > >
> > > > >_________________________________________________________________
> > > > >Connect to the next generation of MSN
> > > >
> >
Messenger?>http://imagine-msn.com/messenger/launch80/default.aspx?locale=en-us&source=wlmailtagline
> >
> > > >
> > > > >_______________________________________________
> > > > >Linuxppc-embedded mailing list
> > > > >Linuxppc-embedded@ozlabs.org
> > > > >https://ozlabs.org/mailman/listinfo/linuxppc-embedded
> > > >
> > > > _________________________________________________________________
> > > > 免费下载 MSN Explorer: http://explorer.msn.com/lccn/
> > > >
> > >
> > >_________________________________________________________________
> > >News, entertainment and everything you care about at Live.com. Get it
now!
> > >http://www.live.com/getstarted.aspx
> >
> > _________________________________________________________________
> > 免费下载 MSN Explorer: http://explorer.msn.com/lccn/
> >
>
>_________________________________________________________________
>Discover the new Windows Vista
>http://search.msn.com/results.aspx?q=windows+vista&mkt=en-US&form=QBRE
_________________________________________________________________
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^ permalink raw reply [flat|nested] 13+ messages in thread
* Re: ML403 gigabit ethernet bandwidth - 2.6 kernel
2007-06-23 12:19 Mohammad Sadegh Sadri
2007-06-23 18:48 ` Ming Liu
@ 2007-06-25 11:52 ` Bhupender Saharan
1 sibling, 0 replies; 13+ messages in thread
From: Bhupender Saharan @ 2007-06-25 11:52 UTC (permalink / raw)
To: Mohammad Sadegh Sadri; +Cc: Andrei Konovalov, Linux PPC Linux PPC
[-- Attachment #1: Type: text/plain, Size: 2193 bytes --]
Hi,
We need to findout where is the bottlenect.
1. Run vmstat on the ML403 board and find out the percentage CPU is busy
when you are transferring the file. That will show if cpu is busy or not.
2. Run oprofile and find out which are the routines eating away the cpu
time.
Once we have data from both the above routines, we can find out the
bottlenecks.
Regards
Bhupi
On 6/23/07, Mohammad Sadegh Sadri <mamsadegh@hotmail.com> wrote:
>
>
> Dear all,
>
> Recently we did a set of tests on performance of virtex 4FX hard TEMAC
> module using ML403
>
> we studied all of the posts here carefully: these are the system
> characteristics;
>
> Board : ML403
> EDK : EDK9.1SP2
> Hard TEMAC version and PLTEMAC version are both 3.0.a
> PPC clock frequency : 300MHz
> Kernel : 2.6.21-rc7 , downloaded from grant's git tree some thing near one
> week ago
> DMA type: 3 (sg dma)
> DRE : enabled for TX and RX, (2)
> CSUM offload is enabled for both of TX and RX
> tx and rx fifo sizes : 131072 bits
>
> the board comes up over NFS root file system completely and without any
> problems.
>
> PC system used for these tests is : CPU P4 Dual Core, 3.4GHz , 2Gigabytes
> memory, Dual gigabit ethernet port, running linux 2.6.21.3
> We have tested the PC system band width and it can easily reach 966mbits/s
> when connected to the same PC. ( using the same cross cable used for ml403
> test)
>
> Netperf is compiled with TCP SEND FILE enabled, ( -DHAVE_SENDFILE)
>
> (from board to PC)
> netperf -t TCP_SENDFILE -H 10.10.10.250 -F /boot/zImage.elf -- -m 16384 -s
> 87380 -S 87380
>
> the measured bandwidth for this test was just 40.66Mbits.
> It is also true for netperf from PC to board.
>
> we do not have any more idea about what we should do to improve the
> bandwidth.
> any help or ideas is appreciated...
>
> _________________________________________________________________
> Connect to the next generation of MSN Messenger
>
> http://imagine-msn.com/messenger/launch80/default.aspx?locale=en-us&source=wlmailtagline
> _______________________________________________
> Linuxppc-embedded mailing list
> Linuxppc-embedded@ozlabs.org
> https://ozlabs.org/mailman/listinfo/linuxppc-embedded
>
[-- Attachment #2: Type: text/html, Size: 2871 bytes --]
^ permalink raw reply [flat|nested] 13+ messages in thread
* RE: ML403 gigabit ethernet bandwidth - 2.6 kernel
@ 2007-06-25 15:21 Glenn.G.Hart
0 siblings, 0 replies; 13+ messages in thread
From: Glenn.G.Hart @ 2007-06-25 15:21 UTC (permalink / raw)
To: eemingliu; +Cc: akonovalov, linuxppc-embedded, mamsadegh
[-- Attachment #1: Type: text/plain, Size: 7622 bytes --]
All,
I am also very interested in the network throughput. I am using the Avenet
Mini-Module which has a V4FX12. The ML403 is very close to the
Mini-Module. I am getting a throughput of about 100 Mbps. The biggest
difference was turning on the cache. 100 MHz vs. 300 MHz only improved the
performance slightly. Using the checksum offloading was also a big help in
getting the throughput up. The RX Threshhold also helped, but the jumbo
frames did not seem to help. I am not sure what I can do to get the 300
Mbps Ming is getting. I saw on a previous post someone was using 128k
FIFO depth. I am using a 32k depth.
Glenn
(Embedded "Ming Liu" <eemingliu@hotmail.com>@ozlabs.org
image moved 06/25/2007 06:03 AM
to file:
pic11478.jpg)
Sent by:
linuxppc-embedded-bounces+glenn.g.hart=us.westinghouse.com@ozlabs.org
To: mamsadegh@hotmail.com
cc: akonovalov@ru.mvista.com, linuxppc-embedded@ozlabs.org
Subject: RE: ML403 gigabit ethernet bandwidth - 2.6 kernel
Security Level:? Internal
Dear Mohammad,
>The results are as follows:
>PC-->ML403
>TCP_SENDFILE : 38Mbps
>
>ML403--->PC
>TCP_SENDFILE: 155Mbps
This result is unreasonable. Because PC is more powerful than your board,
so PC->board should be faster than board->PC.
>The transfer rate from ML403 to PC has improved by a factor of 2,
>I see on the posts here in the mailing list that you have reached a band
width of 301Mbps.
Yes, with all features which could improve performance enabled, we can get
around 300Mbps for TCP transfer. one more hint, did you enable caches on
your system? perhaps it will help. Anyway, double check your hardware
design to make sure all features are enabled.That's all I can suggest.
BR
Ming
>
>
>
>
>----------------------------------------
> > From: eemingliu@hotmail.com
> > To: mamsadegh@hotmail.com; akonovalov@ru.mvista.com;
linuxppc-embedded@ozlabs.org; grant.likely@secretlab.ca
> > Subject: RE: ML403 gigabit ethernet bandwidth - 2.6 kernel
> > Date: Sat, 23 Jun 2007 19:10:16 +0000
> >
> > Use the following command in Linux please:
> >
> > ifconfig eth0 mtu 8982
> >
> > As well you should do that on your PC in the measurement.
> >
> > Ming
> >
> >
> > >From: Mohammad Sadegh Sadri
> > >To: Ming Liu ,
> > ,,
> >
> > >Subject: RE: ML403 gigabit ethernet bandwidth - 2.6 kernel
> > >Date: Sat, 23 Jun 2007 19:08:29 +0000
> > >
> > >
> > >Dear Ming,
> > >
> > >Really thanks for reply,
> > >
> > >about thresholds and waitbound OK! I'll adjust them in adapter.c ,
> > >
> > >but what about enabling jumbo frames? should I do any thing special to
> > enable Jumbo fram support?
> > >
> > >we were thinking that it is enabled by default. Is it?
> > >
> > >thanks
> > >
> > >
> > >
> > >
> > >----------------------------------------
> > > > From: eemingliu@hotmail.com
> > > > To: mamsadegh@hotmail.com; akonovalov@ru.mvista.com;
> > linuxppc-embedded@ozlabs.org; grant.likely@secretlab.ca
> > > > Subject: RE: ML403 gigabit ethernet bandwidth - 2.6 kernel
> > > > Date: Sat, 23 Jun 2007 18:48:19 +0000
> > > >
> > > > Dear Mohammad,
> > > > There are some parameters which could be adjusted to improve the
> > > > performance. They are: TX and RX_Threshold TX and RX_waitbound. In
my
> > > > system, we use TX_Threshold=16 and Rx_Threshold=8 and both
waitbound=1.
> > > >
> > > > Also Jumbo frame of 8982 could be enable.
> > > >
> > > > Try those hints and share your improvement with us.
> > > >
> > > > BR
> > > > Ming
> > > >
> > > > >From: Mohammad Sadegh Sadri
> > > > >To: Andrei Konovalov , Linux PPC Linux
> > > > PPC, Grant Likely
> > > > >Subject: ML403 gigabit ethernet bandwidth - 2.6 kernel
> > > > >Date: Sat, 23 Jun 2007 12:19:12 +0000
> > > > >
> > > > >
> > > > >Dear all,
> > > > >
> > > > >Recently we did a set of tests on performance of virtex 4FX hard
TEMAC
> > > > module using ML403
> > > > >
> > > > >we studied all of the posts here carefully: these are the system
> > > > characteristics;
> > > > >
> > > > >Board : ML403
> > > > >EDK : EDK9.1SP2
> > > > >Hard TEMAC version and PLTEMAC version are both 3.0.a
> > > > >PPC clock frequency : 300MHz
> > > > >Kernel : 2.6.21-rc7 , downloaded from grant's git tree some thing
near
> > one
> > > > week ago
> > > > >DMA type: 3 (sg dma)
> > > > >DRE : enabled for TX and RX, (2)
> > > > >CSUM offload is enabled for both of TX and RX
> > > > >tx and rx fifo sizes : 131072 bits
> > > > >
> > > > >the board comes up over NFS root file system completely and
without
> > any
> > > > problems.
> > > > >
> > > > >PC system used for these tests is : CPU P4 Dual Core, 3.4GHz ,
> > 2Gigabytes
> > > > memory, Dual gigabit ethernet port, running linux 2.6.21.3
> > > > >We have tested the PC system band width and it can easily reach
> > 966mbits/s
> > > > when connected to the same PC. ( using the same cross cable used
for
> > ml403
> > > > test)
> > > > >
> > > > >Netperf is compiled with TCP SEND FILE enabled, ( -DHAVE_SENDFILE)
> > > > >
> > > > >(from board to PC)
> > > > >netperf -t TCP_SENDFILE -H 10.10.10.250 -F /boot/zImage.elf -- -m
> > 16384 -s
> > > > 87380 -S 87380
> > > > >
> > > > >the measured bandwidth for this test was just 40.66Mbits.
> > > > >It is also true for netperf from PC to board.
> > > > >
> > > > >we do not have any more idea about what we should do to improve
the
> > > > bandwidth.
> > > > >any help or ideas is appreciated...
> > > > >
> > > > >_________________________________________________________________
> > > > >Connect to the next generation of MSN
> > > >
> >
Messenger?>http://imagine-msn.com/messenger/launch80/default.aspx?locale=en-us&source=wlmailtagline
> >
> > > >
> > > > >_______________________________________________
> > > > >Linuxppc-embedded mailing list
> > > > >Linuxppc-embedded@ozlabs.org
> > > > >https://ozlabs.org/mailman/listinfo/linuxppc-embedded
> > > >
> > > > _________________________________________________________________
> > > > 免费下载 MSN Explorer: http://explorer.msn.com/lccn/
> > > >
> > >
> > >_________________________________________________________________
> > >News, entertainment and everything you care about at Live.com. Get it
now!
> > >http://www.live.com/getstarted.aspx
> >
> > _________________________________________________________________
> > 免费下载 MSN Explorer: http://explorer.msn.com/lccn/
> >
>
>_________________________________________________________________
>Discover the new Windows Vista
>http://search.msn.com/results.aspx?q=windows+vista&mkt=en-US&form=QBRE
_________________________________________________________________
免费下载 MSN Explorer: http://explorer.msn.com/lccn/
_______________________________________________
Linuxppc-embedded mailing list
Linuxppc-embedded@ozlabs.org
https://ozlabs.org/mailman/listinfo/linuxppc-embedded
[-- Attachment #2: pic11478.jpg --]
[-- Type: image/jpeg, Size: 2170 bytes --]
^ permalink raw reply [flat|nested] 13+ messages in thread
* RE: ML403 gigabit ethernet bandwidth - 2.6 kernel
@ 2007-06-25 19:42 Greg Crocker
2007-06-26 7:42 ` Ming Liu
0 siblings, 1 reply; 13+ messages in thread
From: Greg Crocker @ 2007-06-25 19:42 UTC (permalink / raw)
To: linuxppc-embedded
[-- Attachment #1: Type: text/plain, Size: 409 bytes --]
I was able to achieve ~320 Mbit/sec data rate using the Gigabit System
Reference Design (GSRD XAPP535/536) from Xilinx. This utilizes the
LocalLink TEMAC to perform the transfers. The reference design provides the
Linux 2.4 drivers that can be ported to Linux 2.6 with a little effort.
This implementation did not use checksum offloading and the data rates were
achieved using TCP_STREAM on netperf.
Greg
[-- Attachment #2: Type: text/html, Size: 443 bytes --]
^ permalink raw reply [flat|nested] 13+ messages in thread
* RE: ML403 gigabit ethernet bandwidth - 2.6 kernel
2007-06-25 19:42 ML403 gigabit ethernet bandwidth - 2.6 kernel Greg Crocker
@ 2007-06-26 7:42 ` Ming Liu
0 siblings, 0 replies; 13+ messages in thread
From: Ming Liu @ 2007-06-26 7:42 UTC (permalink / raw)
To: greg.crocker, linuxppc-embedded
Actually I have asked the xilinx expert on the statistics. With the
PLB_TEMAC, we can also get a result like that, say 300Mbps for TCP. (From
their numbers, the throughput is even higher.)
Some remindings from my experience: Remember to enable everything in the
hardware and software which can improve the performance, such as,
CS_offloading, data allighment engines, large fifos, and so on, from the
configuration of PLB_TEMAC in EDK. As well, remember to enable cache. In
the software field, interrupt_coaleascing will also help. At this time,
normally we can get more than 100Mbps for TCP. Jumbo-frame of 8982 will
almost double this number.
Have fun.
BR
Ming
>From: "Greg Crocker" <greg.crocker@gmail.com>
>To: linuxppc-embedded@ozlabs.org
>Subject: RE: ML403 gigabit ethernet bandwidth - 2.6 kernel
>Date: Mon, 25 Jun 2007 15:42:09 -0400
>
>I was able to achieve ~320 Mbit/sec data rate using the Gigabit
>System
>Reference Design (GSRD XAPP535/536) from Xilinx. This utilizes the
>LocalLink TEMAC to perform the transfers. The reference design
>provides the
>Linux 2.4 drivers that can be ported to Linux 2.6 with a little
>effort.
>
>This implementation did not use checksum offloading and the data
>rates were
>achieved using TCP_STREAM on netperf.
>
>Greg
>_______________________________________________
>Linuxppc-embedded mailing list
>Linuxppc-embedded@ozlabs.org
>https://ozlabs.org/mailman/listinfo/linuxppc-embedded
_________________________________________________________________
与联机的朋友进行交流，请使用 MSN Messenger: http://messenger.msn.com/cn
^ permalink raw reply [flat|nested] 13+ messages in thread
* RE: ML403 gigabit ethernet bandwidth - 2.6 kernel
@ 2007-06-26 14:53 Mohammad Sadegh Sadri
2007-06-26 18:12 ` Ming Liu
0 siblings, 1 reply; 13+ messages in thread
From: Mohammad Sadegh Sadri @ 2007-06-26 14:53 UTC (permalink / raw)
To: eemingliu; +Cc: akonovalov, linuxppc-embedded
Dear Ming,
Thanks to your comments , Our tests now give the following results:
ML403--->PC : 410Mbits/s
PC--->ML403 : 210Mbits/s
We have described the characteristics of our base system in previous posts here
In additiona we have :
1- enabled the ppc caches
2- we have set BD_IN_BRAM in adapter.c to 1. ( default is 0 )
TX_THRESHOLD is 16 and RX_THRESHOLD is 2.
the virtex4 fx12 device on ML403 is now completely full, we do not have any free block memories nor any logic slices. Maybe if we had more space we could choose higher values for XTE_SEND_BD_CNT and XTE_RECV_BD_CNT i.e. 384. Do you think this will improve performance?
There is also another interesting test,
We executed netperf on both of PC and ML403 simultanously , when we do not put BDs in BRAM, the performance of ML403-->PC link drops from 390Mbits to 45Mbits, but when using PLB BRAMs for BDs the performance decreases from 410Mbits/s to just 130Mbita/s. It is important when the user wants to transfer data in both directions simulatanously.
Thanks
----------------------------------------
> From: eemingliu@hotmail.com
> To: mamsadegh@hotmail.com
> CC: akonovalov@ru.mvista.com; linuxppc-embedded@ozlabs.org
> Subject: RE: ML403 gigabit ethernet bandwidth - 2.6 kernel
> Date: Mon, 25 Jun 2007 10:03:30 +0000
>
> Dear Mohammad,
>
> >The results are as follows:
> >PC-->ML403
> >TCP_SENDFILE : 38Mbps
> >
> >ML403--->PC
> >TCP_SENDFILE: 155Mbps
>
> This result is unreasonable. Because PC is more powerful than your board,
> so PC->board should be faster than board->PC.
>
> >The transfer rate from ML403 to PC has improved by a factor of 2,
> >I see on the posts here in the mailing list that you have reached a band
> width of 301Mbps.
>
> Yes, with all features which could improve performance enabled, we can get
> around 300Mbps for TCP transfer. one more hint, did you enable caches on
> your system? perhaps it will help. Anyway, double check your hardware
> design to make sure all features are enabled.That's all I can suggest.
>
> BR
> Ming
>
>
> >
> >
> >
> >
> >----------------------------------------
> > > From: eemingliu@hotmail.com
> > > To: mamsadegh@hotmail.com; akonovalov@ru.mvista.com;
> linuxppc-embedded@ozlabs.org; grant.likely@secretlab.ca
> > > Subject: RE: ML403 gigabit ethernet bandwidth - 2.6 kernel
> > > Date: Sat, 23 Jun 2007 19:10:16 +0000
> > >
> > > Use the following command in Linux please:
> > >
> > > ifconfig eth0 mtu 8982
> > >
> > > As well you should do that on your PC in the measurement.
> > >
> > > Ming
> > >
> > >
> > > >From: Mohammad Sadegh Sadri
> > > >To: Ming Liu ,
> > > ,,
> > >
> > > >Subject: RE: ML403 gigabit ethernet bandwidth - 2.6 kernel
> > > >Date: Sat, 23 Jun 2007 19:08:29 +0000
> > > >
> > > >
> > > >Dear Ming,
> > > >
> > > >Really thanks for reply,
> > > >
> > > >about thresholds and waitbound OK! I'll adjust them in adapter.c ,
> > > >
> > > >but what about enabling jumbo frames? should I do any thing special to
> > > enable Jumbo fram support?
> > > >
> > > >we were thinking that it is enabled by default. Is it?
> > > >
> > > >thanks
> > > >
> > > >
> > > >
> > > >
> > > >----------------------------------------
> > > > > From: eemingliu@hotmail.com
> > > > > To: mamsadegh@hotmail.com; akonovalov@ru.mvista.com;
> > > linuxppc-embedded@ozlabs.org; grant.likely@secretlab.ca
> > > > > Subject: RE: ML403 gigabit ethernet bandwidth - 2.6 kernel
> > > > > Date: Sat, 23 Jun 2007 18:48:19 +0000
> > > > >
> > > > > Dear Mohammad,
> > > > > There are some parameters which could be adjusted to improve the
> > > > > performance. They are: TX and RX_Threshold TX and RX_waitbound. In
> my
> > > > > system, we use TX_Threshold=16 and Rx_Threshold=8 and both
> waitbound=1.
> > > > >
> > > > > Also Jumbo frame of 8982 could be enable.
> > > > >
> > > > > Try those hints and share your improvement with us.
> > > > >
> > > > > BR
> > > > > Ming
> > > > >
> > > > > >From: Mohammad Sadegh Sadri
> > > > > >To: Andrei Konovalov , Linux PPC Linux
> > > > > PPC, Grant Likely
> > > > > >Subject: ML403 gigabit ethernet bandwidth - 2.6 kernel
> > > > > >Date: Sat, 23 Jun 2007 12:19:12 +0000
> > > > > >
> > > > > >
> > > > > >Dear all,
> > > > > >
> > > > > >Recently we did a set of tests on performance of virtex 4FX hard
> TEMAC
> > > > > module using ML403
> > > > > >
> > > > > >we studied all of the posts here carefully: these are the system
> > > > > characteristics;
> > > > > >
> > > > > >Board : ML403
> > > > > >EDK : EDK9.1SP2
> > > > > >Hard TEMAC version and PLTEMAC version are both 3.0.a
> > > > > >PPC clock frequency : 300MHz
> > > > > >Kernel : 2.6.21-rc7 , downloaded from grant's git tree some thing
> near
> > > one
> > > > > week ago
> > > > > >DMA type: 3 (sg dma)
> > > > > >DRE : enabled for TX and RX, (2)
> > > > > >CSUM offload is enabled for both of TX and RX
> > > > > >tx and rx fifo sizes : 131072 bits
> > > > > >
> > > > > >the board comes up over NFS root file system completely and
> without
> > > any
> > > > > problems.
> > > > > >
> > > > > >PC system used for these tests is : CPU P4 Dual Core, 3.4GHz ,
> > > 2Gigabytes
> > > > > memory, Dual gigabit ethernet port, running linux 2.6.21.3
> > > > > >We have tested the PC system band width and it can easily reach
> > > 966mbits/s
> > > > > when connected to the same PC. ( using the same cross cable used
> for
> > > ml403
> > > > > test)
> > > > > >
> > > > > >Netperf is compiled with TCP SEND FILE enabled, ( -DHAVE_SENDFILE)
> > > > > >
> > > > > >(from board to PC)
> > > > > >netperf -t TCP_SENDFILE -H 10.10.10.250 -F /boot/zImage.elf -- -m
> > > 16384 -s
> > > > > 87380 -S 87380
> > > > > >
> > > > > >the measured bandwidth for this test was just 40.66Mbits.
> > > > > >It is also true for netperf from PC to board.
> > > > > >
> > > > > >we do not have any more idea about what we should do to improve
> the
> > > > > bandwidth.
> > > > > >any help or ideas is appreciated...
> > > > > >
> > > > > >_________________________________________________________________
> > > > > >Connect to the next generation of MSN
> > > > >
> > >
> Messenger?>http://imagine-msn.com/messenger/launch80/default.aspx?locale=en-us&source=wlmailtagline
>
> > >
> > > > >
> > > > > >_______________________________________________
> > > > > >Linuxppc-embedded mailing list
> > > > > >Linuxppc-embedded@ozlabs.org
> > > > > >https://ozlabs.org/mailman/listinfo/linuxppc-embedded
> > > > >
> > > > > _________________________________________________________________
> > > > > 免费下载 MSN Explorer: http://explorer.msn.com/lccn/
> > > > >
> > > >
> > > >_________________________________________________________________
> > > >News, entertainment and everything you care about at Live.com. Get it
> now!
> > > >http://www.live.com/getstarted.aspx
> > >
> > > _________________________________________________________________
> > > 免费下载 MSN Explorer: http://explorer.msn.com/lccn/
> > >
> >
> >_________________________________________________________________
> >Discover the new Windows Vista
> >http://search.msn.com/results.aspx?q=windows+vista&mkt=en-US&form=QBRE
>
> _________________________________________________________________
> 免费下载 MSN Explorer: http://explorer.msn.com/lccn/
>
_________________________________________________________________
News, entertainment and everything you care about at Live.com. Get it now!
http://www.live.com/getstarted.aspx
^ permalink raw reply [flat|nested] 13+ messages in thread
* RE: ML403 gigabit ethernet bandwidth - 2.6 kernel
2007-06-26 14:53 Mohammad Sadegh Sadri
@ 2007-06-26 18:12 ` Ming Liu
0 siblings, 0 replies; 13+ messages in thread
From: Ming Liu @ 2007-06-26 18:12 UTC (permalink / raw)
To: mamsadegh; +Cc: akonovalov, linuxppc-embedded
Dear Mohammad,
>ML403--->PC : 410Mbits/s
>PC--->ML403 : 210Mbits/s
These results are interesting. In priciple, board to PC will be less than
PC to board. And also you board to PC speed is quite fast. I never had that
high before. :)
>We have described the characteristics of our base system in previous posts
here
>
>In additiona we have :
>1- enabled the ppc caches
This will help the improvement quite a lot.
>2- we have set BD_IN_BRAM in adapter.c to 1. ( default is 0 )
Actually I didn't try to modify this before. My previous results are based
on bd_NOT_in_bram. :) From my understanding, enable this option will put
the buffer descriptor in BRAM rather than DDR. Perhaps I can also try it
and to see if there is any improvement on my system.
>TX_THRESHOLD is 16 and RX_THRESHOLD is 2.
>
>the virtex4 fx12 device on ML403 is now completely full, we do not have
any free block memories nor any logic slices. Maybe if we had more space we
could choose higher values for XTE_SEND_BD_CNT and XTE_RECV_BD_CNT i.e.
384. Do you think this will improve performance?
Probably yes. But I never modified these numbers before. My default ones
are 512 respectively.
>There is also another interesting test,
>We executed netperf on both of PC and ML403 simultanously , when we do not
put BDs in BRAM, the performance of ML403-->PC link drops from 390Mbits to
45Mbits, but when using PLB BRAMs for BDs the performance decreases from
410Mbits/s to just 130Mbita/s. It is important when the user wants to
transfer data in both directions simulatanously.
Definitely! The bottleneck is CPU processing capability. So if you send and
receive data at the same time, the results will be much worse. I think
another reason is TCP is guaranteed protocal. So there will be some
acknowledgements returning back when you send packets out. Thus your
bandwidth will be taken a little away. However compared with the
consumption of CPU, this perhaps will be trivial.
BR
Ming
>
>
>----------------------------------------
> > From: eemingliu@hotmail.com
> > To: mamsadegh@hotmail.com
> > CC: akonovalov@ru.mvista.com; linuxppc-embedded@ozlabs.org
> > Subject: RE: ML403 gigabit ethernet bandwidth - 2.6 kernel
> > Date: Mon, 25 Jun 2007 10:03:30 +0000
> >
> > Dear Mohammad,
> >
> > >The results are as follows:
> > >PC-->ML403
> > >TCP_SENDFILE : 38Mbps
> > >
> > >ML403--->PC
> > >TCP_SENDFILE: 155Mbps
> >
> > This result is unreasonable. Because PC is more powerful than your
board,
> > so PC->board should be faster than board->PC.
> >
> > >The transfer rate from ML403 to PC has improved by a factor of 2,
> > >I see on the posts here in the mailing list that you have reached a
band
> > width of 301Mbps.
> >
> > Yes, with all features which could improve performance enabled, we can
get
> > around 300Mbps for TCP transfer. one more hint, did you enable caches
on
> > your system? perhaps it will help. Anyway, double check your hardware
> > design to make sure all features are enabled.That's all I can suggest.
> >
> > BR
> > Ming
> >
> >
> > >
> > >
> > >
> > >
> > >----------------------------------------
> > > > From: eemingliu@hotmail.com
> > > > To: mamsadegh@hotmail.com; akonovalov@ru.mvista.com;
> > linuxppc-embedded@ozlabs.org; grant.likely@secretlab.ca
> > > > Subject: RE: ML403 gigabit ethernet bandwidth - 2.6 kernel
> > > > Date: Sat, 23 Jun 2007 19:10:16 +0000
> > > >
> > > > Use the following command in Linux please:
> > > >
> > > > ifconfig eth0 mtu 8982
> > > >
> > > > As well you should do that on your PC in the measurement.
> > > >
> > > > Ming
> > > >
> > > >
> > > > >From: Mohammad Sadegh Sadri
> > > > >To: Ming Liu ,
> > > > ,,
> > > >
> > > > >Subject: RE: ML403 gigabit ethernet bandwidth - 2.6 kernel
> > > > >Date: Sat, 23 Jun 2007 19:08:29 +0000
> > > > >
> > > > >
> > > > >Dear Ming,
> > > > >
> > > > >Really thanks for reply,
> > > > >
> > > > >about thresholds and waitbound OK! I'll adjust them in adapter.c ,
> > > > >
> > > > >but what about enabling jumbo frames? should I do any thing
special to
> > > > enable Jumbo fram support?
> > > > >
> > > > >we were thinking that it is enabled by default. Is it?
> > > > >
> > > > >thanks
> > > > >
> > > > >
> > > > >
> > > > >
> > > > >----------------------------------------
> > > > > > From: eemingliu@hotmail.com
> > > > > > To: mamsadegh@hotmail.com; akonovalov@ru.mvista.com;
> > > > linuxppc-embedded@ozlabs.org; grant.likely@secretlab.ca
> > > > > > Subject: RE: ML403 gigabit ethernet bandwidth - 2.6 kernel
> > > > > > Date: Sat, 23 Jun 2007 18:48:19 +0000
> > > > > >
> > > > > > Dear Mohammad,
> > > > > > There are some parameters which could be adjusted to improve
the
> > > > > > performance. They are: TX and RX_Threshold TX and RX_waitbound.
In
> > my
> > > > > > system, we use TX_Threshold=16 and Rx_Threshold=8 and both
> > waitbound=1.
> > > > > >
> > > > > > Also Jumbo frame of 8982 could be enable.
> > > > > >
> > > > > > Try those hints and share your improvement with us.
> > > > > >
> > > > > > BR
> > > > > > Ming
> > > > > >
> > > > > > >From: Mohammad Sadegh Sadri
> > > > > > >To: Andrei Konovalov , Linux PPC Linux
> > > > > > PPC, Grant Likely
> > > > > > >Subject: ML403 gigabit ethernet bandwidth - 2.6 kernel
> > > > > > >Date: Sat, 23 Jun 2007 12:19:12 +0000
> > > > > > >
> > > > > > >
> > > > > > >Dear all,
> > > > > > >
> > > > > > >Recently we did a set of tests on performance of virtex 4FX
hard
> > TEMAC
> > > > > > module using ML403
> > > > > > >
> > > > > > >we studied all of the posts here carefully: these are the
system
> > > > > > characteristics;
> > > > > > >
> > > > > > >Board : ML403
> > > > > > >EDK : EDK9.1SP2
> > > > > > >Hard TEMAC version and PLTEMAC version are both 3.0.a
> > > > > > >PPC clock frequency : 300MHz
> > > > > > >Kernel : 2.6.21-rc7 , downloaded from grant's git tree some
thing
> > near
> > > > one
> > > > > > week ago
> > > > > > >DMA type: 3 (sg dma)
> > > > > > >DRE : enabled for TX and RX, (2)
> > > > > > >CSUM offload is enabled for both of TX and RX
> > > > > > >tx and rx fifo sizes : 131072 bits
> > > > > > >
> > > > > > >the board comes up over NFS root file system completely and
> > without
> > > > any
> > > > > > problems.
> > > > > > >
> > > > > > >PC system used for these tests is : CPU P4 Dual Core, 3.4GHz ,
> > > > 2Gigabytes
> > > > > > memory, Dual gigabit ethernet port, running linux 2.6.21.3
> > > > > > >We have tested the PC system band width and it can easily
reach
> > > > 966mbits/s
> > > > > > when connected to the same PC. ( using the same cross cable
used
> > for
> > > > ml403
> > > > > > test)
> > > > > > >
> > > > > > >Netperf is compiled with TCP SEND FILE enabled, (
-DHAVE_SENDFILE)
> > > > > > >
> > > > > > >(from board to PC)
> > > > > > >netperf -t TCP_SENDFILE -H 10.10.10.250 -F /boot/zImage.elf --
-m
> > > > 16384 -s
> > > > > > 87380 -S 87380
> > > > > > >
> > > > > > >the measured bandwidth for this test was just 40.66Mbits.
> > > > > > >It is also true for netperf from PC to board.
> > > > > > >
> > > > > > >we do not have any more idea about what we should do to
improve
> > the
> > > > > > bandwidth.
> > > > > > >any help or ideas is appreciated...
> > > > > > >
> > > > > >
>_________________________________________________________________
> > > > > > >Connect to the next generation of MSN
> > > > > >
> > > >
> >
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> >
> > > >
> > > > > >
> > > > > > >_______________________________________________
> > > > > > >Linuxppc-embedded mailing list
> > > > > > >Linuxppc-embedded@ozlabs.org
> > > > > > >https://ozlabs.org/mailman/listinfo/linuxppc-embedded
> > > > > >
> > > > > >
_________________________________________________________________
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> > > > > >
> > > > >
> > > > >_________________________________________________________________
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>
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^ permalink raw reply [flat|nested] 13+ messages in thread
* RE: ML403 gigabit ethernet bandwidth - 2.6 kernel
@ 2007-07-04 15:17 Mohammad Sadegh Sadri
0 siblings, 0 replies; 13+ messages in thread
From: Mohammad Sadegh Sadri @ 2007-07-04 15:17 UTC (permalink / raw)
To: eemingliu, akonovalov, linuxppc-embedded
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^ permalink raw reply [flat|nested] 13+ messages in thread
end of thread, other threads:[~2007-07-04 15:18 UTC | newest]
Thread overview: 13+ messages (download: mbox.gz follow: Atom feed
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2007-06-25 19:42 ML403 gigabit ethernet bandwidth - 2.6 kernel Greg Crocker
2007-06-26 7:42 ` Ming Liu
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2007-07-04 15:17 Mohammad Sadegh Sadri
2007-06-26 14:53 Mohammad Sadegh Sadri
2007-06-26 18:12 ` Ming Liu
2007-06-25 15:21 Glenn.G.Hart
2007-06-24 14:36 Mohammad Sadegh Sadri
2007-06-25 10:03 ` Ming Liu
2007-06-23 19:08 Mohammad Sadegh Sadri
2007-06-23 19:10 ` Ming Liu
2007-06-23 12:19 Mohammad Sadegh Sadri
2007-06-23 18:48 ` Ming Liu
2007-06-25 11:52 ` Bhupender Saharan
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