* Re: [2.6.16-gitX] heavy performance regression in ipw2200 wireless driver [not found] <5a4c581d0603221724m391f5466l8a2af3ae7f0aacae@mail.gmail.com> @ 2006-03-23 3:10 ` Andrew Morton 2006-03-23 14:02 ` Alessandro Suardi 0 siblings, 1 reply; 5+ messages in thread From: Andrew Morton @ 2006-03-23 3:10 UTC (permalink / raw) To: Alessandro Suardi; +Cc: linux-kernel, Zhu, Yi, James Ketrenos, netdev "Alessandro Suardi" <alessandro.suardi@gmail.com> wrote: > Pleeeeze try to cc the right people. > Driver - or firmware ? Don't know - since the new git snapshots run > 1.1.1 which requires newer firmware from http://ipw2200.sourceforge.net. > > Symptom -> my new FC5 partition with 2.6.16-git kernels connects via > VNC viewer to my bittorrent box over wireless (ipw2200 to a D-Link > G604T router/AP); Dell D610 runs FC5, BT box is a K7-800 running > FC3 with a 2.6.16-rc5-git8 kernel (15+ days uptime...). > > I also run Firefox on the bittorrent box; noticed today (2.6.16-git5) that > the screen refresh of pages with images was from time to time very > slow (close to unusable). > > Rebooted into my FC4 partition with a 2.6.16 kernel, everything much > snappier. So I ran a scp test from my BT server to the laptop, three > times in a row the same file - a 38MB .flac with the laptop in the same > physical position (ie, no signal variation). Results... > > FC5 - 2.6.16-git3: > > [asuardi@donkey melua_2004-09-23_Berlin]$ scp KM_9-23-04_17_The\ > Closest\ Thing\ to\ Crazy.flac 192.168.1.8:/tmp > asuardi@192.168.1.8's password: > KM_9-23-04_17_The Closest Thing to Crazy.flac 100% 38MB 971.3KB/s 00:40 > [asuardi@donkey melua_2004-09-23_Berlin]$ scp KM_9-23-04_17_The\ > Closest\ Thing\ to\ Crazy.flac 192.168.1.8:/tmp > asuardi@192.168.1.8's password: > KM_9-23-04_17_The Closest Thing to Crazy.flac 100% 38MB 1.3MB/s 00:29 > [asuardi@donkey melua_2004-09-23_Berlin]$ scp KM_9-23-04_17_The\ > Closest\ Thing\ to\ Crazy.flac 192.168.1.8:/tmp > asuardi@192.168.1.8's password: > KM_9-23-04_17_The Closest Thing to Crazy.flac 100% 38MB 626.7KB/s 01:02 > > > FC4 - 2.6.16: > > [asuardi@donkey melua_2004-09-23_Berlin]$ scp KM_9-23-04_17_The\ > Closest\ Thing\ to\ Crazy.flac 192.168.1.8:/tmp > asuardi@192.168.1.8's password: > KM_9-23-04_17_The Closest Thing to Crazy.flac 100% 38MB 1.5MB/s 00:25 > [asuardi@donkey melua_2004-09-23_Berlin]$ scp KM_9-23-04_17_The\ > Closest\ Thing\ to\ Crazy.flac 192.168.1.8:/tmp > asuardi@192.168.1.8's password: > KM_9-23-04_17_The Closest Thing to Crazy.flac 100% 38MB 1.7MB/s 00:23 > [asuardi@donkey melua_2004-09-23_Berlin]$ scp KM_9-23-04_17_The\ > Closest\ Thing\ to\ Crazy.flac 192.168.1.8:/tmp > asuardi@192.168.1.8's password: > KM_9-23-04_17_The Closest Thing to Crazy.flac 100% 38MB 1.7MB/s 00:22 > > Bottom line - old driver has better performance than the new one, > but most noticeably delivers consistent performance. > > I will be available for testing starting Thursday 30th as I'll be on > the road since then. Of course if the problem is identified and > fixed earlier, I won't cry ;) Well. It's not a huge regression. It's a 50%ish regression. We've done worse ;) ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [2.6.16-gitX] heavy performance regression in ipw2200 wireless driver 2006-03-23 3:10 ` [2.6.16-gitX] heavy performance regression in ipw2200 wireless driver Andrew Morton @ 2006-03-23 14:02 ` Alessandro Suardi 2006-03-24 3:41 ` Zhu Yi 0 siblings, 1 reply; 5+ messages in thread From: Alessandro Suardi @ 2006-03-23 14:02 UTC (permalink / raw) To: Andrew Morton; +Cc: linux-kernel, Zhu, Yi, James Ketrenos, netdev On 3/23/06, Andrew Morton <akpm@osdl.org> wrote: > "Alessandro Suardi" <alessandro.suardi@gmail.com> wrote: > > > > Pleeeeze try to cc the right people. Sorry about that - should probably defer bug reporting to times when I'm actually supposed to be awake (2:20am doesn't fit the bill obviously :| ) > > Driver - or firmware ? Don't know - since the new git snapshots run > > 1.1.1 which requires newer firmware from http://ipw2200.sourceforge.net. > > > > Symptom -> my new FC5 partition with 2.6.16-git kernels connects via > > VNC viewer to my bittorrent box over wireless (ipw2200 to a D-Link > > G604T router/AP); Dell D610 runs FC5, BT box is a K7-800 running > > FC3 with a 2.6.16-rc5-git8 kernel (15+ days uptime...). > > > > I also run Firefox on the bittorrent box; noticed today (2.6.16-git5) that > > the screen refresh of pages with images was from time to time very > > slow (close to unusable). > > > > Rebooted into my FC4 partition with a 2.6.16 kernel, everything much > > snappier. So I ran a scp test from my BT server to the laptop, three > > times in a row the same file - a 38MB .flac with the laptop in the same > > physical position (ie, no signal variation). Results... > > > > FC5 - 2.6.16-git3: > > > > [asuardi@donkey melua_2004-09-23_Berlin]$ scp KM_9-23-04_17_The\ > > Closest\ Thing\ to\ Crazy.flac 192.168.1.8:/tmp > > asuardi@192.168.1.8's password: > > KM_9-23-04_17_The Closest Thing to Crazy.flac 100% 38MB 971.3KB/s 00:40 > > [asuardi@donkey melua_2004-09-23_Berlin]$ scp KM_9-23-04_17_The\ > > Closest\ Thing\ to\ Crazy.flac 192.168.1.8:/tmp > > asuardi@192.168.1.8's password: > > KM_9-23-04_17_The Closest Thing to Crazy.flac 100% 38MB 1.3MB/s 00:29 > > [asuardi@donkey melua_2004-09-23_Berlin]$ scp KM_9-23-04_17_The\ > > Closest\ Thing\ to\ Crazy.flac 192.168.1.8:/tmp > > asuardi@192.168.1.8's password: > > KM_9-23-04_17_The Closest Thing to Crazy.flac 100% 38MB 626.7KB/s 01:02 > > > > > > FC4 - 2.6.16: > > > > [asuardi@donkey melua_2004-09-23_Berlin]$ scp KM_9-23-04_17_The\ > > Closest\ Thing\ to\ Crazy.flac 192.168.1.8:/tmp > > asuardi@192.168.1.8's password: > > KM_9-23-04_17_The Closest Thing to Crazy.flac 100% 38MB 1.5MB/s 00:25 > > [asuardi@donkey melua_2004-09-23_Berlin]$ scp KM_9-23-04_17_The\ > > Closest\ Thing\ to\ Crazy.flac 192.168.1.8:/tmp > > asuardi@192.168.1.8's password: > > KM_9-23-04_17_The Closest Thing to Crazy.flac 100% 38MB 1.7MB/s 00:23 > > [asuardi@donkey melua_2004-09-23_Berlin]$ scp KM_9-23-04_17_The\ > > Closest\ Thing\ to\ Crazy.flac 192.168.1.8:/tmp > > asuardi@192.168.1.8's password: > > KM_9-23-04_17_The Closest Thing to Crazy.flac 100% 38MB 1.7MB/s 00:22 > > > > Bottom line - old driver has better performance than the new one, > > but most noticeably delivers consistent performance. > > > > I will be available for testing starting Thursday 30th as I'll be on > > the road since then. Of course if the problem is identified and > > fixed earlier, I won't cry ;) > > Well. It's not a huge regression. It's a 50%ish regression. We've done > worse ;) That scp test shows 50%ish - but that was a quickie. The VNC client even reported a 719Kbps throughput down from the more usual 11500Kbps it starts off with. The first scp I tried when the sluggishness was intolerable was going at 200KB/s - which shows the problem can easily get in the neighborhood of an order of magnitude. Thanks, --alessandro "Dreamer ? Each one of us is a dreamer. We just push it down deep because we are repeatedly told that we are not allowed to dream in real life" (Reinhold Ziegler) ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [2.6.16-gitX] heavy performance regression in ipw2200 wireless driver 2006-03-23 14:02 ` Alessandro Suardi @ 2006-03-24 3:41 ` Zhu Yi 2006-03-24 9:30 ` Alessandro Suardi 2006-03-25 22:48 ` Alessandro Suardi 0 siblings, 2 replies; 5+ messages in thread From: Zhu Yi @ 2006-03-24 3:41 UTC (permalink / raw) To: Alessandro Suardi; +Cc: Andrew Morton, linux-kernel, James Ketrenos, netdev On Thu, 2006-03-23 at 15:02 +0100, Alessandro Suardi wrote: > That scp test shows 50%ish - but that was a quickie. The VNC > client even reported a 719Kbps throughput down from the more > usual 11500Kbps it starts off with. The first scp I tried when the > sluggishness was intolerable was going at 200KB/s - which > shows the problem can easily get in the neighborhood of an > order of magnitude. What kind of wireless encryption do you use? We turned off hardware encryption by default recently as a workaround for a firmware restart bug. You might want to load module with "modprobe ipw2200 hwcrypto=1" and retest. Thanks, -yi ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [2.6.16-gitX] heavy performance regression in ipw2200 wireless driver 2006-03-24 3:41 ` Zhu Yi @ 2006-03-24 9:30 ` Alessandro Suardi 2006-03-25 22:48 ` Alessandro Suardi 1 sibling, 0 replies; 5+ messages in thread From: Alessandro Suardi @ 2006-03-24 9:30 UTC (permalink / raw) To: Zhu Yi; +Cc: Andrew Morton, linux-kernel, James Ketrenos, netdev On 3/24/06, Zhu Yi <yi.zhu@intel.com> wrote: > On Thu, 2006-03-23 at 15:02 +0100, Alessandro Suardi wrote: > > That scp test shows 50%ish - but that was a quickie. The VNC > > client even reported a 719Kbps throughput down from the more > > usual 11500Kbps it starts off with. The first scp I tried when the > > sluggishness was intolerable was going at 200KB/s - which > > shows the problem can easily get in the neighborhood of an > > order of magnitude. > > What kind of wireless encryption do you use? We turned off hardware > encryption by default recently as a workaround for a firmware restart > bug. You might want to load module with "modprobe ipw2200 hwcrypto=1" > and retest. I actually use no encryption yet, as I still have to find out time to call D-Link about the fact that my router hangs when I try to set up a whitelist of MAC addresses for the wireless AP; WPA would be up next... Would loading the module with h/w encryption turned on make any difference in my case ? Thanks, PS don't tell my neighbors ;) --alessandro "Dreamer ? Each one of us is a dreamer. We just push it down deep because we are repeatedly told that we are not allowed to dream in real life" (Reinhold Ziegler) ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [2.6.16-gitX] heavy performance regression in ipw2200 wireless driver 2006-03-24 3:41 ` Zhu Yi 2006-03-24 9:30 ` Alessandro Suardi @ 2006-03-25 22:48 ` Alessandro Suardi 1 sibling, 0 replies; 5+ messages in thread From: Alessandro Suardi @ 2006-03-25 22:48 UTC (permalink / raw) To: Zhu Yi; +Cc: Andrew Morton, linux-kernel, James Ketrenos, netdev On 3/24/06, Zhu Yi <yi.zhu@intel.com> wrote: > On Thu, 2006-03-23 at 15:02 +0100, Alessandro Suardi wrote: > > That scp test shows 50%ish - but that was a quickie. The VNC > > client even reported a 719Kbps throughput down from the more > > usual 11500Kbps it starts off with. The first scp I tried when the > > sluggishness was intolerable was going at 200KB/s - which > > shows the problem can easily get in the neighborhood of an > > order of magnitude. > > What kind of wireless encryption do you use? We turned off hardware > encryption by default recently as a workaround for a firmware restart > bug. You might want to load module with "modprobe ipw2200 hwcrypto=1" > and retest. The issue seems to have vanished in more recent kernel snapshots (namely, 2.6.16-git3 and -git5 exhibited the problem; -git8 and -git9 did not). I will holler if the problem pops up again... thanks, --alessandro "Dreamer ? Each one of us is a dreamer. We just push it down deep because we are repeatedly told that we are not allowed to dream in real life" (Reinhold Ziegler) ^ permalink raw reply [flat|nested] 5+ messages in thread
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[not found] <5a4c581d0603221724m391f5466l8a2af3ae7f0aacae@mail.gmail.com>
2006-03-23 3:10 ` [2.6.16-gitX] heavy performance regression in ipw2200 wireless driver Andrew Morton
2006-03-23 14:02 ` Alessandro Suardi
2006-03-24 3:41 ` Zhu Yi
2006-03-24 9:30 ` Alessandro Suardi
2006-03-25 22:48 ` Alessandro Suardi
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