[2.6.27-rc7 vs 2.6.29 Regresion] Wifi Network Slownes rt2500pci

[2.6.27-rc7 vs 2.6.29 Regresion] Wifi Network Slownes rt2500pci

[Alejandro Riveira Fernández]

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I reported it previously but i'm resending it as a regresion

More info on the bugzilla

 http://bugzilla.kernel.org/show_bug.cgi?id=13362

I bisected it in the estable tree (it regresses too) and the revert
helps there but reverting the upstream commit in mainline does not help
to fix it completely...


-- 
Is God willing to prevent evil, but not able? Then he is not omnipotent.
Is he able, but not willing? Then he is malevolent. Is he both able and
willing? Then whence cometh evil? Is he neither able nor willing? Then
why call him God?
                                                Epicurus

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Re: [2.6.27-rc7 vs 2.6.29 Regresion] Wifi Network Slownes rt2500pci

[Ivo van Doorn]

On Monday 25 May 2009, Alejandro Riveira Fernández wrote:
> I reported it previously but i'm resending it as a regresion
> 
> More info on the bugzilla
> 
>  http://bugzilla.kernel.org/show_bug.cgi?id=13362
> 
> I bisected it in the estable tree (it regresses too) and the revert
> helps there but reverting the upstream commit in mainline does not help
> to fix it completely...

Bug 9273 -  rt2500pci: low TCP throughput
	http://bugzilla.kernel.org/show_bug.cgi?id=9273

Bug 443203 -  Fedora rawhide + ralink = slow bit rate
	https://bugzilla.redhat.com/show_bug.cgi?id=443203

[Hardy][Intrepid] Low bandwidth with rt2400 / rt2500 drivers
	https://bugs.launchpad.net/ubuntu/+source/linux/+bug/190515

I can't call this a regression, dozens people have reported the problems
ranging from kernels 2.6.25 to 2.6.29. Perhaps in your case it worked slightly
better once, but that was not the case for all other users.

Have you tried the "iwconfig wlan0 rate54M" workaround?

Ivo

Re: [2.6.27-rc7 vs 2.6.29 Regresion] Wifi Network Slownes rt2500pci

[Alejandro Riveira Fernández]

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El lun, 25-05-2009 a las 13:23 +0200, Ivo van Doorn escribió:
> On Monday 25 May 2009, Alejandro Riveira Fernández wrote:
> > I reported it previously but i'm resending it as a regresion
> > 
> > More info on the bugzilla
> > 
> >  http://bugzilla.kernel.org/show_bug.cgi?id=13362
> > 
> > I bisected it in the estable tree (it regresses too) and the revert
> > helps there but reverting the upstream commit in mainline does not help
> > to fix it completely...
> 
> Bug 9273 -  rt2500pci: low TCP throughput
> 	http://bugzilla.kernel.org/show_bug.cgi?id=9273
> 
> Bug 443203 -  Fedora rawhide + ralink = slow bit rate
> 	https://bugzilla.redhat.com/show_bug.cgi?id=443203
> 
> [Hardy][Intrepid] Low bandwidth with rt2400 / rt2500 drivers
> 	https://bugs.launchpad.net/ubuntu/+source/linux/+bug/190515
> 
> I can't call this a regression, dozens people have reported the problems
> ranging from kernels 2.6.25 to 2.6.29. Perhaps in your case it worked slightly
> better once, but that was not the case for all other users.
> 
> Have you tried the "iwconfig wlan0 rate54M" workaround?

   Yep during various releases I used that workaround but once I
switched to minstrel rate choosing alg (that's the neme isn't it) the
problem gone away and i got allways a good connection for several
releases and many kernels tried; till this patch. If I revert this patch
the problem goes away completly and reliably (i'm using 2.6.29.4 with
the patch reveted) so something has clearly regressed for me.

 You can see my coments ( ariveira ) on rt2x00 forums regarding the
issues you mention (low speed that gets fixed forcing the rate) in the
long thread about rt2500pci low rate[1].
 
 Checking the message i see that it was 2.6.27  when i began using
minstrel and got a rock solid connection in 2.6.27.x, 2.6.28.x and
2.6.29 minus 64e1b00c974ddeae6a60ebb02e1c487371905cea

 The problem is not that I get a low rate on connect (1Mbit) that i can
easily fix with iwconfig the problem is that with 54M (and 48M and the
like) connections I get a bumpy and low speed connection.
 
So I honesty think it is not the same issue and I hope you read this as
an interesting data point and not just as a duplicate.

Would the output of this script[2] for 2.6.29.4 with and without the
revert help you ?

> 
> Ivo

Thanks for the response

[1]
http://rt2x00.serialmonkey.com/phpBB/viewtopic.php?f=5&t=4579&start=45

[2] http://rt2x00.serialmonkey.com/phpBB/viewtopic.php?f=5&t=4660 

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Re: [2.6.27-rc7 vs 2.6.29 Regresion] Wifi Network Slownes rt2500pci

[Ivo van Doorn]

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On Monday 25 May 2009, Alejandro Riveira Fernández wrote:
> El lun, 25-05-2009 a las 13:23 +0200, Ivo van Doorn escribió:
> > On Monday 25 May 2009, Alejandro Riveira Fernández wrote:
> > > I reported it previously but i'm resending it as a regresion
> > > 
> > > More info on the bugzilla
> > > 
> > >  http://bugzilla.kernel.org/show_bug.cgi?id=13362
> > > 
> > > I bisected it in the estable tree (it regresses too) and the revert
> > > helps there but reverting the upstream commit in mainline does not help
> > > to fix it completely...
> > 
> > Bug 9273 -  rt2500pci: low TCP throughput
> > 	http://bugzilla.kernel.org/show_bug.cgi?id=9273
> > 
> > Bug 443203 -  Fedora rawhide + ralink = slow bit rate
> > 	https://bugzilla.redhat.com/show_bug.cgi?id=443203
> > 
> > [Hardy][Intrepid] Low bandwidth with rt2400 / rt2500 drivers
> > 	https://bugs.launchpad.net/ubuntu/+source/linux/+bug/190515
> > 
> > I can't call this a regression, dozens people have reported the problems
> > ranging from kernels 2.6.25 to 2.6.29. Perhaps in your case it worked slightly
> > better once, but that was not the case for all other users.
> > 
> > Have you tried the "iwconfig wlan0 rate54M" workaround?
> 
>    Yep during various releases I used that workaround but once I
> switched to minstrel rate choosing alg (that's the neme isn't it) the
> problem gone away and i got allways a good connection for several
> releases and many kernels tried; till this patch. If I revert this patch
> the problem goes away completly and reliably (i'm using 2.6.29.4 with
> the patch reveted) so something has clearly regressed for me.
> 
>  You can see my coments ( ariveira ) on rt2x00 forums regarding the
> issues you mention (low speed that gets fixed forcing the rate) in the
> long thread about rt2500pci low rate[1].
>  
>  Checking the message i see that it was 2.6.27  when i began using
> minstrel and got a rock solid connection in 2.6.27.x, 2.6.28.x and
> 2.6.29 minus 64e1b00c974ddeae6a60ebb02e1c487371905cea
> 
>  The problem is not that I get a low rate on connect (1Mbit) that i can
> easily fix with iwconfig the problem is that with 54M (and 48M and the
> like) connections I get a bumpy and low speed connection.
>  
> So I honesty think it is not the same issue and I hope you read this as
> an interesting data point and not just as a duplicate.
> 
> Would the output of this script[2] for 2.6.29.4 with and without the
> revert help you ?

Yes please try it. but for 2.6.29 you probably need attached script instead.
I am not sure if it would produce something useful, because I think Johannes
assertion is right. With his patch the correct bitmask is send to the driver
and the driver actually needs _that_ bitmask without any editing
(rather then the incorrect one which was send before that patch).

Ivo

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Re: [2.6.27-rc7 vs 2.6.29 Regresion] Wifi Network Slownes rt2500pci

[Alejandro Riveira Fernández]

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El mar, 26-05-2009 a las 10:58 +0200, Ivo van Doorn escribió:
> On Monday 25 May 2009, Alejandro Riveira Fernández wrote:

> > Would the output of this script[2] for 2.6.29.4 with and without the
> > revert help you ?
> 
> Yes please try it. but for 2.6.29 you probably need attached script instead.
> I am not sure if it would produce something useful, because I think Johannes
> assertion is right. With his patch the correct bitmask is send to the driver
> and the driver actually needs _that_ bitmask without any editing
> (rather then the incorrect one which was send before that patch).

What causes the regression then?

Anyway For the script to work what config options do I need? debugfs?
Anything else ?

> 
> Ivo
-- 
It's easy to make malloc() return NULL under Windows: there is no fork() 
system call, and nobody expects the machine to stay up anyway, so who 
cares? When you say "I wrote a program that crashed Windows", people 
just stare at you blankly and say "Hey, I got those with the system, 
*for free*". 
                                             Linus Torvalds



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Re: [2.6.27-rc7 vs 2.6.29 Regresion] Wifi Network Slownes rt2500pci

[Ivo van Doorn]

On Tuesday 26 May 2009, Alejandro Riveira Fernández wrote:
> El mar, 26-05-2009 a las 10:58 +0200, Ivo van Doorn escribió:
> > On Monday 25 May 2009, Alejandro Riveira Fernández wrote:
> 
> > > Would the output of this script[2] for 2.6.29.4 with and without the
> > > revert help you ?
> > 
> > Yes please try it. but for 2.6.29 you probably need attached script instead.
> > I am not sure if it would produce something useful, because I think Johannes
> > assertion is right. With his patch the correct bitmask is send to the driver
> > and the driver actually needs _that_ bitmask without any editing
> > (rather then the incorrect one which was send before that patch).
> 
> What causes the regression then?

No idea. Apparently the invalid bitmask is accepted by the device under
certain conditions. Which would be very odd.... But since dozens
of people reported this problem for 2.6.27 as well, it probably depends
heavily on the actual chipset revision or configuration.

> Anyway For the script to work what config options do I need? debugfs?
> Anything else ?

CONFIG_DEBUGFS
CONFIG_MAC80211_DEBUGFS
CONFIG_RT2X00_LIB_DEBUGFS

And thats it, make sure debugfs is mounted and just run the script.
The script will detect mount location and rt2x00 interface.

Ivo

Re: [2.6.27-rc7 vs 2.6.29 Regresion] Wifi Network Slownes rt2500pci

[Alejandro Riveira Fernández]

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El mar, 26-05-2009 a las 12:35 +0200, Ivo van Doorn escribió:

> > What causes the regression then?
> 
> No idea. Apparently the invalid bitmask is accepted by the device under
> certain conditions. Which would be very odd.... But since dozens
> of people reported this problem for 2.6.27 as well, it probably depends
> heavily on the actual chipset revision or configuration.
> 
> > Anyway For the script to work what config options do I need? debugfs?
> > Anything else ?
> 
> CONFIG_DEBUGFS
> CONFIG_MAC80211_DEBUGFS
> CONFIG_RT2X00_LIB_DEBUGFS
> 
> And thats it, make sure debugfs is mounted and just run the script.
> The script will detect mount location and rt2x00 interface.


That's what I get[1] with the good kernel but I think the script failed
because I got a very short output

$ sudo bash rt2x00_regdump.sh | xclip

kernel: 2.6.29.4-00258-ga2c0a36
driver: rt2500pci
version: 2.2.3
compiled: May 26 2009 13:05:03
dev_flags: 0x00000a2f
rt chip: 0201
rf chip: 0003
revision:00000004

csr length: 93
eeprom length: 256
bbp length: 64
rf length: 5


And nothing more...

> 
> Ivo

Alejandro

[1] Had to install gawk mawk does not have --posix. 

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Re: [2.6.27-rc7 vs 2.6.29 Regresion] Wifi Network Slownes rt2500pci

[Ivo van Doorn]

Hi,

> > > What causes the regression then?
> > 
> > No idea. Apparently the invalid bitmask is accepted by the device under
> > certain conditions. Which would be very odd.... But since dozens
> > of people reported this problem for 2.6.27 as well, it probably depends
> > heavily on the actual chipset revision or configuration.
> > 
> > > Anyway For the script to work what config options do I need? debugfs?
> > > Anything else ?
> > 
> > CONFIG_DEBUGFS
> > CONFIG_MAC80211_DEBUGFS
> > CONFIG_RT2X00_LIB_DEBUGFS
> > 
> > And thats it, make sure debugfs is mounted and just run the script.
> > The script will detect mount location and rt2x00 interface.
> 
> 
> That's what I get[1] with the good kernel but I think the script failed
> because I got a very short output

Ok, that means it is the wrong script, try the other one from the download
location you previously refered to. I changed the API some time ago, and
am not sure which stable release that change will be in.

> [1] Had to install gawk mawk does not have --posix. 

Right, that was still something I needed to work on. :)

Ivo

Re: [2.6.27-rc7 vs 2.6.29 Regresion] Wifi Network Slownes rt2500pci

[Alejandro Riveira Fernández]

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El mar, 26-05-2009 a las 14:45 +0200, Ivo van Doorn escribió:
> Hi,
> 
[...]
> 
> Ok, that means it is the wrong script, try the other one from the download
> location you previously refered to. I changed the API some time ago, and
> am not sure which stable release that change will be in.

I inline the diff between the two dumps the dumps are attached to the
mail message 

--- reg_dump_bad.txt	2009-05-26 17:16:03.078863719 +0200
+++ reg_dump_good.txt	2009-05-26 16:48:07.654117749 +0200
@@ -1,4 +1,4 @@
-kernel: 2.6.29.4-00257-g186f9b1
+kernel: 2.6.29.4-00258-ga2c0a36
 driver: rt2500pci
 version: 2.2.3
 compiled: May 26 2009 13:05:03
@@ -23,14 +23,14 @@
 7 :0x00000000
 8 :0x000fff86
 9 :0x00000980
-10 :0xb90c3000
+10 :0xbe0c8000
 11 :0x070409a5
 12 :0x06400640
 13 :0x000000a0
 14 :0x0000000b
 15 :0x00000000
-16 :0x498f3f26
-17 :0x00000078
+16 :0xe59c4b51
+17 :0x00000077
 18 :0x0013000a
 19 :0x0156001c
 20 :0x000005a0
@@ -38,26 +38,26 @@
 22 :0x00000000
 23 :0x00000000
 24 :0x00000000
-25 :0x01614504
+25 :0x01603b04
 26 :0x1808182c
-27 :0xb914b000
-28 :0xb9149000
-29 :0xb90bf000
-30 :0xb914a000
+27 :0xbe044000
+28 :0xbe9f4000
+29 :0xbebae000
+30 :0xbebc8000
 31 :0x00000000
 32 :0x0000007e
 33 :0x0000182c
-34 :0xb90c3000
+34 :0xbe0c8000
 35 :0x000003b8
 36 :0xb3aab3af
 37 :0x86870885
 38 :0x8c8d8b8a
-39 :0x0000000f
-40 :0x00000000
+39 :0x00000f0f
+40 :0x00000001
 41 :0x00000000
 42 :0x0000009c
-43 :0x000033f7
-44 :0x0000028e
+43 :0x00000007
+44 :0x00000000
 45 :0x0003ffff
 46 :0x00000000
 47 :0x00000000
@@ -70,25 +70,25 @@
 54 :0x000001fe
 55 :0x1aa83f21
 56 :0x00213223
-57 :0x00000518
+57 :0x00000218
 58 :0x9a009a11
 59 :0x00000000
 60 :0x00001150
 61 :0x14062411
 62 :0x00011e46
 63 :0x0000c78f
-64 :0xb90c323c
-65 :0xb914b1b8
-66 :0xb90bf160
-67 :0xb9149000
+64 :0xbe0c82c0
+65 :0xbe044134
+66 :0xbebae1e4
+67 :0xbe9f4000
 68 :0x00000020
-69 :0x00000001
-70 :0x000000f5
+69 :0x0000000d
+70 :0x000000d7
 71 :0x000000aa
 72 :0x00000001
 73 :0x00000001
 74 :0x00000000
-75 :0x0000381c
+75 :0x000363b1
 76 :0x000500f0
 77 :0x00000040
 78 :0x000000f0
@@ -99,7 +99,7 @@
 83 :0x7038140a
 84 :0x1d21252d
 85 :0x1919191d
-86 :0xb914b000
+86 :0xbe044000
 87 :0x821a8202
 88 :0x00000003
 89 :0x00000000
@@ -367,13 +367,13 @@
 
 bbp
 0 :0x12
-1 :0xf3
-2 :0x02
+1 :0xe6
+2 :0x1a
 3 :0x02
 4 :0x19
-5 :0x0b
-6 :0x00
-7 :0x0e
+5 :0x08
+6 :0x01
+7 :0x2c
 8 :0x00
 9 :0x00
 10 :0x09
@@ -409,16 +409,16 @@
 40 :0x02
 41 :0x60
 42 :0x09
-43 :0x02
-44 :0x76
+43 :0x00
+44 :0x4e
 45 :0x00
-46 :0x2d
+46 :0x5a
 47 :0x14
 48 :0x00
 49 :0x01
 50 :0x98
-51 :0x40
-52 :0x6e
+51 :0x3c
+52 :0x04
 53 :0x10
 54 :0x18
 55 :0x05


> 
> > [1] Had to install gawk mawk does not have --posix. 
> 
> Right, that was still something I needed to work on. :)
> 
> Ivo

Alejandro
-- 
> All is fine except that I can reliably "oops" it simply by trying to 
> read from /proc/apm (e.g. cat /proc/apm).
> oops output and ksymoops-2.3.4 output is attached.
> Is there anything else I can contribute?

The latitude and longtitude of the bios writers current position, and
a ballistic missile.

                --Alan Cox LKML-December 08,2000 

[-- Attachment #1.2: reg_dump_bad.txt --]
[-- Type: text/plain, Size: 5675 bytes --]

kernel: 2.6.29.4-00257-g186f9b1
driver: rt2500pci
version: 2.2.3
compiled: May 26 2009 13:05:03
dev_flags: 0x00000a2f
rt chip: 0201
rf chip: 0003
revision:00000004

csr length: 93
eeprom length: 256
bbp length: 64
rf length: 5

csr
0 :0x00000004
1 :0x00000004
2 :0x00000000
3 :0x355a8000
4 :0x000091cf
5 :0x315a8000
6 :0x0000db90
7 :0x00000000
8 :0x000fff86
9 :0x00000980
10 :0xb90c3000
11 :0x070409a5
12 :0x06400640
13 :0x000000a0
14 :0x0000000b
15 :0x00000000
16 :0x498f3f26
17 :0x00000078
18 :0x0013000a
19 :0x0156001c
20 :0x000005a0
21 :0x00000030
22 :0x00000000
23 :0x00000000
24 :0x00000000
25 :0x01614504
26 :0x1808182c
27 :0xb914b000
28 :0xb9149000
29 :0xb90bf000
30 :0xb914a000
31 :0x00000000
32 :0x0000007e
33 :0x0000182c
34 :0xb90c3000
35 :0x000003b8
36 :0xb3aab3af
37 :0x86870885
38 :0x8c8d8b8a
39 :0x0000000f
40 :0x00000000
41 :0x00000000
42 :0x0000009c
43 :0x000033f7
44 :0x0000028e
45 :0x0003ffff
46 :0x00000000
47 :0x00000000
48 :0x00000000
49 :0x3f3b3100
50 :0x00020002
51 :0x00000002
52 :0x00020002
53 :0x00000002
54 :0x000001fe
55 :0x1aa83f21
56 :0x00213223
57 :0x00000518
58 :0x9a009a11
59 :0x00000000
60 :0x00001150
61 :0x14062411
62 :0x00011e46
63 :0x0000c78f
64 :0xb90c323c
65 :0xb914b1b8
66 :0xb90bf160
67 :0xb9149000
68 :0x00000020
69 :0x00000001
70 :0x000000f5
71 :0x000000aa
72 :0x00000001
73 :0x00000001
74 :0x00000000
75 :0x0000381c
76 :0x000500f0
77 :0x00000040
78 :0x000000f0
79 :0x00700400
80 :0x00380409
81 :0x0014040a
82 :0x000a840b
83 :0x7038140a
84 :0x1d21252d
85 :0x1919191d
86 :0xb914b000
87 :0x821a8202
88 :0x00000003
89 :0x00000000
90 :0x00000000
91 :0x00000000
92 :0x76543210

eeprom
0 :0x2560
1 :0xffff
2 :0x8000
3 :0x355a
4 :0x91cf
5 :0x0201
6 :0x1814
7 :0x0601
8 :0x0000
9 :0x3c01
10 :0x1948
11 :0x0000
12 :0x0002
13 :0x0000
14 :0xffff
15 :0xffff
16 :0x18ea
17 :0xfff0
18 :0x02ff
19 :0x0f30
20 :0x1126
21 :0x150d
22 :0x160d
23 :0x3510
24 :0x3610
25 :0x3d6a
26 :0x3e10
27 :0x2350
28 :0x2960
29 :0x3618
30 :0xffff
31 :0xffff
32 :0xffff
33 :0xffff
34 :0xffff
35 :0x1313
36 :0x1313
37 :0x1212
38 :0x1212
39 :0x1212
40 :0x1212
41 :0x1212
42 :0xffff
43 :0xffff
44 :0xffff
45 :0xffff
46 :0xffff
47 :0xffff
48 :0xffff
49 :0xffff
50 :0xffff
51 :0xffff
52 :0xffff
53 :0xffff
54 :0xffff
55 :0xffff
56 :0xffff
57 :0xffff
58 :0xffff
59 :0xffff
60 :0xffff
61 :0xffff
62 :0xff6d
63 :0x0101
64 :0xffff
65 :0xffff
66 :0xffff
67 :0xffff
68 :0xffff
69 :0xffff
70 :0xffff
71 :0xffff
72 :0xffff
73 :0xffff
74 :0xffff
75 :0xffff
76 :0xffff
77 :0xffff
78 :0xffff
79 :0xffff
80 :0xffff
81 :0xffff
82 :0xffff
83 :0xffff
84 :0xffff
85 :0xffff
86 :0xffff
87 :0xffff
88 :0xffff
89 :0xffff
90 :0xffff
91 :0xffff
92 :0xffff
93 :0xffff
94 :0xffff
95 :0xffff
96 :0xffff
97 :0xffff
98 :0xffff
99 :0xffff
100 :0xffff
101 :0xffff
102 :0xffff
103 :0xffff
104 :0xffff
105 :0xffff
106 :0xffff
107 :0xffff
108 :0xffff
109 :0xffff
110 :0xffff
111 :0xffff
112 :0xffff
113 :0xffff
114 :0xffff
115 :0xffff
116 :0xffff
117 :0xffff
118 :0xffff
119 :0xffff
120 :0xffff
121 :0xffff
122 :0xffff
123 :0xffff
124 :0xffff
125 :0xffff
126 :0xffff
127 :0xffff
128 :0x2560
129 :0xffff
130 :0x8000
131 :0x355a
132 :0x91cf
133 :0x0201
134 :0x1814
135 :0x0601
136 :0x0000
137 :0x3c01
138 :0x1948
139 :0x0000
140 :0x0002
141 :0x0000
142 :0xffff
143 :0xffff
144 :0x18ea
145 :0xffff
146 :0x02ff
147 :0x0f30
148 :0x1126
149 :0x150d
150 :0x160d
151 :0x3510
152 :0x3610
153 :0x3d6a
154 :0x3e10
155 :0x2350
156 :0x2960
157 :0x3618
158 :0xffff
159 :0xffff
160 :0xffff
161 :0xffff
162 :0xffff
163 :0x1313
164 :0x1313
165 :0x1212
166 :0x1212
167 :0x1212
168 :0x1212
169 :0x1212
170 :0xffff
171 :0xffff
172 :0xffff
173 :0xffff
174 :0xffff
175 :0xffff
176 :0xffff
177 :0xffff
178 :0xffff
179 :0xffff
180 :0xffff
181 :0xffff
182 :0xffff
183 :0xffff
184 :0xffff
185 :0xffff
186 :0xffff
187 :0xffff
188 :0xffff
189 :0xffff
190 :0xff6d
191 :0x0101
192 :0xffff
193 :0xffff
194 :0xffff
195 :0xffff
196 :0xffff
197 :0xffff
198 :0xffff
199 :0xffff
200 :0xffff
201 :0xffff
202 :0xffff
203 :0xffff
204 :0xffff
205 :0xffff
206 :0xffff
207 :0xffff
208 :0xffff
209 :0xffff
210 :0xffff
211 :0xffff
212 :0xffff
213 :0xffff
214 :0xffff
215 :0xffff
216 :0xffff
217 :0xffff
218 :0xffff
219 :0xffff
220 :0xffff
221 :0xffff
222 :0xffff
223 :0xffff
224 :0xffff
225 :0xffff
226 :0xffff
227 :0xffff
228 :0xffff
229 :0xffff
230 :0xffff
231 :0xffff
232 :0xffff
233 :0xffff
234 :0xffff
235 :0xffff
236 :0xffff
237 :0xffff
238 :0xffff
239 :0xffff
240 :0xffff
241 :0xffff
242 :0xffff
243 :0xffff
244 :0xffff
245 :0xffff
246 :0xffff
247 :0xffff
248 :0xffff
249 :0xffff
250 :0xffff
251 :0xffff
252 :0xffff
253 :0xffff
254 :0xffff
255 :0xffff

bbp
0 :0x12
1 :0xf3
2 :0x02
3 :0x02
4 :0x19
5 :0x0b
6 :0x00
7 :0x0e
8 :0x00
9 :0x00
10 :0x09
11 :0x04
12 :0x00
13 :0x38
14 :0x1e
15 :0x30
16 :0xac
17 :0x50
18 :0x18
19 :0xff
20 :0x1e
21 :0x0d
22 :0x0d
23 :0x08
24 :0x70
25 :0x40
26 :0x08
27 :0x23
28 :0x18
29 :0x18
30 :0x10
31 :0x2b
32 :0xb9
33 :0x55
34 :0x12
35 :0x50
36 :0x11
37 :0x05
38 :0x00
39 :0xc4
40 :0x02
41 :0x60
42 :0x09
43 :0x02
44 :0x76
45 :0x00
46 :0x2d
47 :0x14
48 :0x00
49 :0x01
50 :0x98
51 :0x40
52 :0x6e
53 :0x10
54 :0x18
55 :0x05
56 :0x08
57 :0x10
58 :0x08
59 :0x3f
60 :0x01
61 :0x6a
62 :0x10
63 :0x00

rf
0 :0x00000000
1 :0x00002020
2 :0x00080cb2
3 :0x00062411
4 :0x00000a1b



[-- Attachment #1.3: reg_dump_good.txt --]
[-- Type: text/plain, Size: 5675 bytes --]

kernel: 2.6.29.4-00258-ga2c0a36
driver: rt2500pci
version: 2.2.3
compiled: May 26 2009 13:05:03
dev_flags: 0x00000a2f
rt chip: 0201
rf chip: 0003
revision:00000004

csr length: 93
eeprom length: 256
bbp length: 64
rf length: 5

csr
0 :0x00000004
1 :0x00000004
2 :0x00000000
3 :0x355a8000
4 :0x000091cf
5 :0x315a8000
6 :0x0000db90
7 :0x00000000
8 :0x000fff86
9 :0x00000980
10 :0xbe0c8000
11 :0x070409a5
12 :0x06400640
13 :0x000000a0
14 :0x0000000b
15 :0x00000000
16 :0xe59c4b51
17 :0x00000077
18 :0x0013000a
19 :0x0156001c
20 :0x000005a0
21 :0x00000030
22 :0x00000000
23 :0x00000000
24 :0x00000000
25 :0x01603b04
26 :0x1808182c
27 :0xbe044000
28 :0xbe9f4000
29 :0xbebae000
30 :0xbebc8000
31 :0x00000000
32 :0x0000007e
33 :0x0000182c
34 :0xbe0c8000
35 :0x000003b8
36 :0xb3aab3af
37 :0x86870885
38 :0x8c8d8b8a
39 :0x00000f0f
40 :0x00000001
41 :0x00000000
42 :0x0000009c
43 :0x00000007
44 :0x00000000
45 :0x0003ffff
46 :0x00000000
47 :0x00000000
48 :0x00000000
49 :0x3f3b3100
50 :0x00020002
51 :0x00000002
52 :0x00020002
53 :0x00000002
54 :0x000001fe
55 :0x1aa83f21
56 :0x00213223
57 :0x00000218
58 :0x9a009a11
59 :0x00000000
60 :0x00001150
61 :0x14062411
62 :0x00011e46
63 :0x0000c78f
64 :0xbe0c82c0
65 :0xbe044134
66 :0xbebae1e4
67 :0xbe9f4000
68 :0x00000020
69 :0x0000000d
70 :0x000000d7
71 :0x000000aa
72 :0x00000001
73 :0x00000001
74 :0x00000000
75 :0x000363b1
76 :0x000500f0
77 :0x00000040
78 :0x000000f0
79 :0x00700400
80 :0x00380409
81 :0x0014040a
82 :0x000a840b
83 :0x7038140a
84 :0x1d21252d
85 :0x1919191d
86 :0xbe044000
87 :0x821a8202
88 :0x00000003
89 :0x00000000
90 :0x00000000
91 :0x00000000
92 :0x76543210

eeprom
0 :0x2560
1 :0xffff
2 :0x8000
3 :0x355a
4 :0x91cf
5 :0x0201
6 :0x1814
7 :0x0601
8 :0x0000
9 :0x3c01
10 :0x1948
11 :0x0000
12 :0x0002
13 :0x0000
14 :0xffff
15 :0xffff
16 :0x18ea
17 :0xfff0
18 :0x02ff
19 :0x0f30
20 :0x1126
21 :0x150d
22 :0x160d
23 :0x3510
24 :0x3610
25 :0x3d6a
26 :0x3e10
27 :0x2350
28 :0x2960
29 :0x3618
30 :0xffff
31 :0xffff
32 :0xffff
33 :0xffff
34 :0xffff
35 :0x1313
36 :0x1313
37 :0x1212
38 :0x1212
39 :0x1212
40 :0x1212
41 :0x1212
42 :0xffff
43 :0xffff
44 :0xffff
45 :0xffff
46 :0xffff
47 :0xffff
48 :0xffff
49 :0xffff
50 :0xffff
51 :0xffff
52 :0xffff
53 :0xffff
54 :0xffff
55 :0xffff
56 :0xffff
57 :0xffff
58 :0xffff
59 :0xffff
60 :0xffff
61 :0xffff
62 :0xff6d
63 :0x0101
64 :0xffff
65 :0xffff
66 :0xffff
67 :0xffff
68 :0xffff
69 :0xffff
70 :0xffff
71 :0xffff
72 :0xffff
73 :0xffff
74 :0xffff
75 :0xffff
76 :0xffff
77 :0xffff
78 :0xffff
79 :0xffff
80 :0xffff
81 :0xffff
82 :0xffff
83 :0xffff
84 :0xffff
85 :0xffff
86 :0xffff
87 :0xffff
88 :0xffff
89 :0xffff
90 :0xffff
91 :0xffff
92 :0xffff
93 :0xffff
94 :0xffff
95 :0xffff
96 :0xffff
97 :0xffff
98 :0xffff
99 :0xffff
100 :0xffff
101 :0xffff
102 :0xffff
103 :0xffff
104 :0xffff
105 :0xffff
106 :0xffff
107 :0xffff
108 :0xffff
109 :0xffff
110 :0xffff
111 :0xffff
112 :0xffff
113 :0xffff
114 :0xffff
115 :0xffff
116 :0xffff
117 :0xffff
118 :0xffff
119 :0xffff
120 :0xffff
121 :0xffff
122 :0xffff
123 :0xffff
124 :0xffff
125 :0xffff
126 :0xffff
127 :0xffff
128 :0x2560
129 :0xffff
130 :0x8000
131 :0x355a
132 :0x91cf
133 :0x0201
134 :0x1814
135 :0x0601
136 :0x0000
137 :0x3c01
138 :0x1948
139 :0x0000
140 :0x0002
141 :0x0000
142 :0xffff
143 :0xffff
144 :0x18ea
145 :0xffff
146 :0x02ff
147 :0x0f30
148 :0x1126
149 :0x150d
150 :0x160d
151 :0x3510
152 :0x3610
153 :0x3d6a
154 :0x3e10
155 :0x2350
156 :0x2960
157 :0x3618
158 :0xffff
159 :0xffff
160 :0xffff
161 :0xffff
162 :0xffff
163 :0x1313
164 :0x1313
165 :0x1212
166 :0x1212
167 :0x1212
168 :0x1212
169 :0x1212
170 :0xffff
171 :0xffff
172 :0xffff
173 :0xffff
174 :0xffff
175 :0xffff
176 :0xffff
177 :0xffff
178 :0xffff
179 :0xffff
180 :0xffff
181 :0xffff
182 :0xffff
183 :0xffff
184 :0xffff
185 :0xffff
186 :0xffff
187 :0xffff
188 :0xffff
189 :0xffff
190 :0xff6d
191 :0x0101
192 :0xffff
193 :0xffff
194 :0xffff
195 :0xffff
196 :0xffff
197 :0xffff
198 :0xffff
199 :0xffff
200 :0xffff
201 :0xffff
202 :0xffff
203 :0xffff
204 :0xffff
205 :0xffff
206 :0xffff
207 :0xffff
208 :0xffff
209 :0xffff
210 :0xffff
211 :0xffff
212 :0xffff
213 :0xffff
214 :0xffff
215 :0xffff
216 :0xffff
217 :0xffff
218 :0xffff
219 :0xffff
220 :0xffff
221 :0xffff
222 :0xffff
223 :0xffff
224 :0xffff
225 :0xffff
226 :0xffff
227 :0xffff
228 :0xffff
229 :0xffff
230 :0xffff
231 :0xffff
232 :0xffff
233 :0xffff
234 :0xffff
235 :0xffff
236 :0xffff
237 :0xffff
238 :0xffff
239 :0xffff
240 :0xffff
241 :0xffff
242 :0xffff
243 :0xffff
244 :0xffff
245 :0xffff
246 :0xffff
247 :0xffff
248 :0xffff
249 :0xffff
250 :0xffff
251 :0xffff
252 :0xffff
253 :0xffff
254 :0xffff
255 :0xffff

bbp
0 :0x12
1 :0xe6
2 :0x1a
3 :0x02
4 :0x19
5 :0x08
6 :0x01
7 :0x2c
8 :0x00
9 :0x00
10 :0x09
11 :0x04
12 :0x00
13 :0x38
14 :0x1e
15 :0x30
16 :0xac
17 :0x50
18 :0x18
19 :0xff
20 :0x1e
21 :0x0d
22 :0x0d
23 :0x08
24 :0x70
25 :0x40
26 :0x08
27 :0x23
28 :0x18
29 :0x18
30 :0x10
31 :0x2b
32 :0xb9
33 :0x55
34 :0x12
35 :0x50
36 :0x11
37 :0x05
38 :0x00
39 :0xc4
40 :0x02
41 :0x60
42 :0x09
43 :0x00
44 :0x4e
45 :0x00
46 :0x5a
47 :0x14
48 :0x00
49 :0x01
50 :0x98
51 :0x3c
52 :0x04
53 :0x10
54 :0x18
55 :0x05
56 :0x08
57 :0x10
58 :0x08
59 :0x3f
60 :0x01
61 :0x6a
62 :0x10
63 :0x00

rf
0 :0x00000000
1 :0x00002020
2 :0x00080cb2
3 :0x00062411
4 :0x00000a1b



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Re: [2.6.27-rc7 vs 2.6.29 Regresion] Wifi Network Slownes rt2500pci

[Alejandro Riveira Fernández]

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El mar, 26-05-2009 a las 17:23 +0200, Alejandro Riveira Fernández
escribió:
> El mar, 26-05-2009 a las 14:45 +0200, Ivo van Doorn escribió:
> > Hi,
> > 
> [...]
> > 
> > Ok, that means it is the wrong script, try the other one from the download
> > location you previously refered to. I changed the API some time ago, and
> > am not sure which stable release that change will be in.
> 
> I inline the diff between the two dumps the dumps are attached to the
> mail message

ICMP ECHO REQUEST

Any advance?

>  
> 
> --- reg_dump_bad.txt	2009-05-26 17:16:03.078863719 +0200
> +++ reg_dump_good.txt	2009-05-26 16:48:07.654117749 +0200
> @@ -1,4 +1,4 @@
> -kernel: 2.6.29.4-00257-g186f9b1
> +kernel: 2.6.29.4-00258-ga2c0a36
>  driver: rt2500pci
>  version: 2.2.3
>  compiled: May 26 2009 13:05:03
 
[...]

> Alejandro
-- 
The idea that Bill Gates has appeared like a knight in shining armour to
lead all customers out of a mire of technological chaos neatly ignores
the fact that it was he who, by peddling second-rate technology, led
them into it in the first place. 
                                     Douglas Adams

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Re: [2.6.27-rc7 vs 2.6.29 Regresion] Wifi Network Slownes rt2500pci

[Ivo van Doorn]

On Tuesday 02 June 2009, Alejandro Riveira Fernández wrote:
> El mar, 26-05-2009 a las 17:23 +0200, Alejandro Riveira Fernández
> escribió:
> > El mar, 26-05-2009 a las 14:45 +0200, Ivo van Doorn escribió:
> > > Hi,
> > > 
> > [...]
> > > 
> > > Ok, that means it is the wrong script, try the other one from the download
> > > location you previously refered to. I changed the API some time ago, and
> > > am not sure which stable release that change will be in.
> > 
> > I inline the diff between the two dumps the dumps are attached to the
> > mail message
> 
> ICMP ECHO REQUEST
> 
> Any advance?

Well I checked the dumps from the bugreport, but like I expected
the only difference is that with the slow speed the correct value
is written, and the fast speed the wrong value is written.
I couldn't find anything else interesting in it... :(

Ivo

Re: [2.6.27-rc7 vs 2.6.29 Regresion] Wifi Network Slownes rt2500pci

[Alejandro Riveira Fernández]

[-- Attachment #1: Type: text/plain, Size: 1059 bytes --]

El mar, 02-06-2009 a las 18:34 +0200, Ivo van Doorn escribió:
> On Tuesday 02 June 2009, Alejandro Riveira Fernández wrote:

[...]

> > ICMP ECHO REQUEST
> > 
> > Any advance?
> 
> Well I checked the dumps from the bugreport, but like I expected
> the only difference is that with the slow speed the correct value
> is written, and the fast speed the wrong value is written.

So my chip works better with incorrect values written in its registers?

/me confused

What about other chips out there do they prefer wrong values too ;)
Maybe what we thought wrong values are not that wrong ?

/me stops rambling

> I couldn't find anything else interesting in it... :(

Thanks anyway.

> 
> Ivo
-- 
OOP to me means only messaging, local retention and protection and
hiding of state-process, and extreme late-binding of all things. It can
be done in Smalltalk and in LISP. There are possibly other systems in
which this is possible, but I'm not aware of them.
                                                      -- Alan Kay --

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Re: [2.6.27-rc7 vs 2.6.29 Regresion] Wifi Network Slownes rt2500pci

[Ivo van Doorn]

On Tuesday 02 June 2009, Alejandro Riveira Fernández wrote:
> El mar, 02-06-2009 a las 18:34 +0200, Ivo van Doorn escribió:
> > On Tuesday 02 June 2009, Alejandro Riveira Fernández wrote:
> 
> [...]
> 
> > > ICMP ECHO REQUEST
> > > 
> > > Any advance?
> > 
> > Well I checked the dumps from the bugreport, but like I expected
> > the only difference is that with the slow speed the correct value
> > is written, and the fast speed the wrong value is written.
> 
> So my chip works better with incorrect values written in its registers?

Apparently, probably because some other register is set to an incorrect value,
but I have no idea which one that would be.

> What about other chips out there do they prefer wrong values too ;)
> Maybe what we thought wrong values are not that wrong ?

They are wrong. That exact register initialization is pretty straightforward
in the original Ralink driver on which rt2x00 is based.

Ivo

Re: [2.6.27-rc7 vs 2.6.29 Regresion] Wifi Network Slownes rt2500pci

[Alejandro Riveira Fernández]

[-- Attachment #1: Type: text/plain, Size: 949 bytes --]

El mar, 02-06-2009 a las 23:53 +0200, Ivo van Doorn escribió:

> > So my chip works better with incorrect values written in its registers?
> 
> Apparently, probably because some other register is set to an incorrect value,
> but I have no idea which one that would be.

Could the fact that i dual boot with windows (and use the windows
driver) have someting to do with it ?

> 
> > What about other chips out there do they prefer wrong values too ;)
> > Maybe what we thought wrong values are not that wrong ?
> 
> They are wrong. That exact register initialization is pretty straightforward
> in the original Ralink driver on which rt2x00 is based.
> 
> Ivo
-- 
"I contend that we are both atheists. I just believe in one fewer god
than you do. When you understand why you dismiss all the other possible
gods, you will understand why I dismiss yours."
                                                  Stephen Henry Roberts

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Re: [2.6.27-rc7 vs 2.6.29 Regresion] Wifi Network Slownes rt2500pci

[Ivo van Doorn]

On Wednesday 03 June 2009, Alejandro Riveira Fernández wrote:
> El mar, 02-06-2009 a las 23:53 +0200, Ivo van Doorn escribió:
> 
> > > So my chip works better with incorrect values written in its registers?
> > 
> > Apparently, probably because some other register is set to an incorrect value,
> > but I have no idea which one that would be.
> 
> Could the fact that i dual boot with windows (and use the windows
> driver) have someting to do with it ?

Don't think so, unless you notice a difference in behavior when you reboot
from Windows to Linux compared to making a cold-boot or reboot from Linux
to Linux.

Ivo