From: Florian Zwoch <zwoch@backendmedia.com>
To: netdev@oss.sgi.com
Subject: e1000 -> 82540EM on linux 2.6.0-test[45] very slow in one direction
Date: Fri, 19 Sep 2003 12:25:09 +0200 [thread overview]
Message-ID: <bkeli5$8l2$1@sea.gmane.org> (raw)
hi,
this has been discussed very roughly before. but unfortunately no real
solution has been brought up so far (or i have not read it yet).
problem in short: the 82540EM intel gigabit adapter became very slow as
of 2.6.0-test4. maybe earlier versions were als affected aswell, but i
noticed this behaviour on test4 and later. the 'slowness' of the adapter
only affects a certain data direction. i performed the following tests
to show you what is wrong.
dummy data file was 34257856 bytes (34.3MB).
test machines were a pentium4 with the intel adapter, and a pentium2 266
with a lowcost realtek card (runs linux 2.4).
SCP:
e1000 -> 8139too 28.6KB/s
e1000 <- 8139too 4.6MB/s
SMB:
e1000 -> 8139too 3.0MB/s
e1000 <- 8139too 3.3MB/s
FTP
e1000 -> 8139too 54KB/s
e1000 <- 8139too 9.4MB/s
as you can see reveiving data is no problem at all (maybe another
protocol can create some problems in this case?). but sending data is
awesome slow! exception is the samba protocol. why is that? i thought
that samba may use udp instead of tcp. but iptraf did not show any udp
packets going around so i guess i was wrong.
the problem gets worse while trying to test things over the internet.
scp stalls incredibly often on my 256kbit/s upstream. so does ftp and
irc dcc protocol. irc dcc ends up with sending 0.3KB/s on a megabyte
sized file.
before people again trying to tell me that some duplex settings could be
messed up - then tell me why this should happen. when i boot into 2.4
kernel with that test machine the nic works without problems. so IF
duplex stuff is the reason for the hickups something must be wrong with
the duplex detection code in the new driver/kernel?
i tried vanilla 2.6.0-test5, 2.6.0-test5-mm2 and mm3 + 2.6.0-test5-bk4.
none of these gave any difference regarding network performance.
any suggestions or patches will be appreaciated. thanks!
Florian Zwoch
following some systeminfo:
ethtool -i eth0
driver: e1000
version: 5.2.16-k1
firmware-version: N/A
bus-info: 0000:02:0e.0
ethtool -d eth0
MAC Registers
-------------
0x00000: CTRL (Device control register) 0x18340249
Duplex: full
Endian mode (buffers): little
Link reset: reset
Set link up: 1
Invert Loss-Of-Signal: no
Receive flow control: enabled
Transmit flow control: enabled
VLAN mode: disabled
Auto speed detect: disabled
Speed select: 1000Mb/s
Force speed: no
Force duplex: no
0x00008: STATUS (Device status register) 0x0000C343
Duplex: full
Link up: link config
TBI mode: disabled
Link speed: 100Mb/s
0x00100: RCTL (Receive control register) 0x00008002
Receiver: enabled
Store bad packets: disabled
Unicast promiscuous: disabled
Multicast promiscuous: disabled
Long packet: disabled
Descriptor minimum threshold size: 1/2
Broadcast accept mode: accept
VLAN filter: disabled
Cononical form indicator: disabled
Discard pause frames: filtered
Pass MAC control frames: don't pass
Receive buffer size: 2048
0x02808: RDLEN (Receive desc length) 0x00001000
0x02810: RDH (Receive desc head) 0x00000005
0x02818: RDT (Receive desc tail) 0x00000000
0x02820: RDTR (Receive delay timer) 0x00000000
0x00400: TCTL (Transmit ctrl register) 0x0004010A
Transmitter: enabled
Pad short packets: enabled
Software XOFF Transmission: disabled
Re-transmit on late collision: disabled
0x03808: TDLEN (Transmit desc length) 0x00001000
0x03810: TDH (Transmit desc head) 0x000000B4
0x03818: TDT (Transmit desc tail) 0x000000B4
0x03820: TIDV (Transmit delay timer) 0x00000040
pci -vvv
00:00.0 Host bridge: Intel Corp. 82850 850 (Tehama) Chipset Host Bridge
(MCH) (rev 04)
Subsystem: Asustek Computer, Inc.: Unknown device 8030
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B-
Status: Cap+ 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort-
<MAbort+ >SERR- <PERR-
Latency: 0
Region 0: Memory at f0000000 (32-bit, prefetchable) [size=128M]
Capabilities: [a0] AGP version 2.0
Status: RQ=32 Iso- ArqSz=0 Cal=0 SBA+ ITACoh- GART64- HTrans- 64bit-
FW+ AGP3- Rate=x1,x2,x4
Command: RQ=1 ArqSz=0 Cal=0 SBA+ AGP+ GART64- 64bit- FW+ Rate=x4
00:01.0 PCI bridge: Intel Corp. 82850 850 (Tehama) Chipset AGP Bridge
(rev 04) (prog-if 00 [Normal decode])
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B-
Status: Cap- 66Mhz+ UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort-
<MAbort- >SERR- <PERR-
Latency: 0
Bus: primary=00, secondary=01, subordinate=01, sec-latency=32
I/O behind bridge: 0000e000-0000dfff
Memory behind bridge: ea000000-eb5fffff
Prefetchable memory behind bridge: eb700000-efffffff
BridgeCtl: Parity- SERR- NoISA- VGA+ MAbort- >Reset- FastB2B-
00:1e.0 PCI bridge: Intel Corp. 82801BA/CA/DB/EB PCI Bridge (rev 04)
(prog-if 00 [Normal decode])
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR+ FastB2B-
Status: Cap- 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort-
<MAbort- >SERR- <PERR-
Latency: 0
Bus: primary=00, secondary=02, subordinate=02, sec-latency=32
I/O behind bridge: 0000b000-0000dfff
Memory behind bridge: e7800000-e9ffffff
Prefetchable memory behind bridge: eb600000-eb6fffff
BridgeCtl: Parity- SERR+ NoISA+ VGA- MAbort- >Reset- FastB2B-
00:1f.0 ISA bridge: Intel Corp. 82801BA ISA Bridge (LPC) (rev 04)
Control: I/O+ Mem+ BusMaster+ SpecCycle+ MemWINV- VGASnoop- ParErr-
Stepping- SERR+ FastB2B-
Status: Cap- 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR-
Latency: 0
00:1f.1 IDE interface: Intel Corp. 82801BA IDE U100 (rev 04) (prog-if 80
[Master])
Subsystem: Asustek Computer, Inc.: Unknown device 8028
Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B-
Status: Cap- 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR-
Latency: 0
Region 4: I/O ports at a800 [size=16]
00:1f.2 USB Controller: Intel Corp. 82801BA/BAM USB (Hub #1) (rev 04)
(prog-if 00 [UHCI])
Subsystem: Asustek Computer, Inc.: Unknown device 8028
Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B-
Status: Cap- 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR-
Latency: 0
Interrupt: pin D routed to IRQ 19
Region 4: I/O ports at a400 [size=32]
00:1f.3 SMBus: Intel Corp. 82801BA/BAM SMBus (rev 04)
Subsystem: Asustek Computer, Inc.: Unknown device 8028
Control: I/O+ Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B-
Status: Cap- 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR-
Interrupt: pin B routed to IRQ 17
Region 4: I/O ports at e800 [size=16]
00:1f.4 USB Controller: Intel Corp. 82801BA/BAM USB (Hub #2) (rev 04)
(prog-if 00 [UHCI])
Subsystem: Asustek Computer, Inc.: Unknown device 8028
Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B-
Status: Cap- 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR-
Latency: 0
Interrupt: pin C routed to IRQ 23
Region 4: I/O ports at a000 [size=32]
01:00.0 VGA compatible controller: nVidia Corporation NV25 [GeForce4 Ti
4200] (rev a3) (prog-if 00 [VGA])
Subsystem: Asustek Computer, Inc.: Unknown device 803f
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B-
Status: Cap+ 66Mhz+ UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR-
Latency: 248 (1250ns min, 250ns max)
Interrupt: pin A routed to IRQ 16
Region 0: Memory at ea000000 (32-bit, non-prefetchable) [size=16M]
Region 1: Memory at ec000000 (32-bit, prefetchable) [size=64M]
Region 2: Memory at eb800000 (32-bit, prefetchable) [size=512K]
Expansion ROM at eb7e0000 [disabled] [size=128K]
Capabilities: [60] Power Management version 2
Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
Status: D0 PME-Enable- DSel=0 DScale=0 PME-
Capabilities: [44] AGP version 2.0
Status: RQ=32 Iso- ArqSz=0 Cal=0 SBA+ ITACoh- GART64- HTrans- 64bit-
FW+ AGP3- Rate=x1,x2,x4
Command: RQ=32 ArqSz=0 Cal=0 SBA+ AGP+ GART64- 64bit- FW+ Rate=x4
02:03.0 Multimedia audio controller: C-Media Electronics Inc CM8738 (rev 10)
Subsystem: Asustek Computer, Inc. CMI8738 6ch-MX
Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping+ SERR- FastB2B-
Status: Cap+ 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR-
Latency: 32 (500ns min, 6000ns max)
Interrupt: pin A routed to IRQ 21
Region 0: I/O ports at d800 [size=256]
Capabilities: [c0] Power Management version 2
Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
Status: D0 PME-Enable- DSel=0 DScale=0 PME-
02:04.0 USB Controller: NEC Corporation USB (rev 41) (prog-if 10 [OHCI])
Subsystem: Unknown device 807d:0035
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV+ VGASnoop- ParErr-
Stepping- SERR- FastB2B-
Status: Cap+ 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR-
Latency: 32 (250ns min, 10500ns max), cache line size 08
Interrupt: pin A routed to IRQ 21
Region 0: Memory at e9800000 (32-bit, non-prefetchable) [size=4K]
Capabilities: [40] Power Management version 2
Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=0mA PME(D0+,D1+,D2+,D3hot+,D3cold-)
Status: D0 PME-Enable- DSel=0 DScale=0 PME-
02:04.1 USB Controller: NEC Corporation USB (rev 41) (prog-if 10 [OHCI])
Subsystem: Unknown device 807d:0035
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV+ VGASnoop- ParErr-
Stepping- SERR- FastB2B-
Status: Cap+ 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR-
Latency: 32 (250ns min, 10500ns max), cache line size 08
Interrupt: pin B routed to IRQ 255
Region 0: Memory at e9000000 (32-bit, non-prefetchable) [size=4K]
Capabilities: [40] Power Management version 2
Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=0mA PME(D0+,D1+,D2+,D3hot+,D3cold-)
Status: D0 PME-Enable- DSel=0 DScale=0 PME-
02:04.2 USB Controller: NEC Corporation USB 2.0 (rev 02) (prog-if 20 [EHCI])
Subsystem: Unknown device 807d:1043
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV+ VGASnoop- ParErr-
Stepping- SERR- FastB2B-
Status: Cap+ 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR-
Latency: 32 (4000ns min, 8500ns max), cache line size 20
Interrupt: pin C routed to IRQ 23
Region 0: Memory at e8800000 (32-bit, non-prefetchable) [size=256]
Capabilities: [40] Power Management version 2
Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=0mA PME(D0+,D1+,D2+,D3hot+,D3cold-)
Status: D0 PME-Enable- DSel=0 DScale=0 PME-
02:0c.0 Multimedia audio controller: IC Ensemble Inc ICE1724 [Envy24HT]
(rev 01)
Subsystem: TERRATEC Electronic GmbH: Unknown device 1147
Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B-
Status: Cap+ 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR-
Latency: 32
Interrupt: pin A routed to IRQ 20
Region 0: I/O ports at d400 [size=32]
Region 1: I/O ports at d000 [size=128]
Capabilities: [80] Power Management version 1
Flags: PMEClk- DSI- D1- D2+ AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
Status: D0 PME-Enable- DSel=0 DScale=0 PME-
02:0e.0 Ethernet controller: Intel Corp. 82540EM Gigabit Ethernet
Controller (rev 02)
Subsystem: Intel Corp. PRO/1000 MT Desktop Adapter
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV+ VGASnoop- ParErr-
Stepping- SERR- FastB2B-
Status: Cap+ 66Mhz+ UDF- FastB2B- ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR-
Latency: 32 (63750ns min), cache line size 08
Interrupt: pin A routed to IRQ 18
Region 0: Memory at e8000000 (32-bit, non-prefetchable) [size=128K]
Region 1: Memory at e7800000 (32-bit, non-prefetchable) [size=128K]
Region 2: I/O ports at b800 [size=64]
Expansion ROM at <unassigned> [disabled] [size=128K]
Capabilities: [dc] Power Management version 2
Flags: PMEClk- DSI+ D1- D2- AuxCurrent=0mA PME(D0+,D1-,D2-,D3hot+,D3cold+)
Status: D0 PME-Enable- DSel=0 DScale=1 PME-
Capabilities: [e4] PCI-X non-bridge device.
Command: DPERE- ERO+ RBC=0 OST=0
Status: Bus=0 Dev=0 Func=0 64bit- 133MHz- SCD- USC-, DC=simple,
DMMRBC=0, DMOST=0, DMCRS=0, RSCEM- Capabilities: [f0] Message Signalled
Interrupts: 64bit+ Queue=0/0 Enable-
Address: 0000000000000000 Data: 0000
next reply other threads:[~2003-09-19 10:25 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-09-19 10:25 Florian Zwoch [this message]
2003-10-01 8:02 ` e1000 -> 82540EM on linux 2.6.0-test[45] very slow in one direction Florian Zwoch
2003-10-03 10:30 ` Ookhoi
2003-10-03 12:23 ` Ookhoi
-- strict thread matches above, loose matches on Subject: below --
2003-10-03 18:27 Leech, Christopher
2003-10-04 6:49 ` Sander
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