* Re: [Bugme-new] [Bug 7027] New: CD Ripping speeds slow with 2.6.17
[not found] <200608191800.k7JI0ML0015395@fire-2.osdl.org>
@ 2006-08-19 18:14 ` Andrew Morton
2006-08-19 18:53 ` mbligh
2006-08-20 8:27 ` Mike Galbraith
0 siblings, 2 replies; 9+ messages in thread
From: Andrew Morton @ 2006-08-19 18:14 UTC (permalink / raw)
To: Ingo Molnar, Mike Galbraith, Martin Bligh; +Cc: linux-kernel
On Sat, 19 Aug 2006 11:00:22 -0700
bugme-daemon@bugzilla.kernel.org wrote:
> http://bugzilla.kernel.org/show_bug.cgi?id=7027
>
> Summary: CD Ripping speeds slow with 2.6.17
> Kernel Version: 2.6.17
> Status: NEW
> Severity: normal
> Owner: bzolnier@gmail.com
> Submitter: brnewber@gmail.com
>
>
> Most recent kernel where this bug did not occur: 2.6.16
> Distribution: Gentoo
> Hardware Environment: ASUS K8V mobo, AMD64 2200, 1GB RAM
> Software Environment: Gentoo
> Problem Description: Ever since 2.6.17 my cd ripping speeds with one particular
> CD ripper/encoder (namely the one I wrote) have been slow.
>
> Using git bisect I tracked it down to this patch..
>
> 9430d58e34ec3861e1ca72f8e49105b227aad327 is first bad commit
> commit 9430d58e34ec3861e1ca72f8e49105b227aad327
> Author: Mike Galbraith <efault@gmx.de>
> Date: Wed Mar 22 00:07:33 2006 -0800
>
> [PATCH] sched: remove sleep_avg multiplier
>
> Remove the sleep_avg multiplier. This multiplier was necessary back when
> we had 10 seconds of dynamic range in sleep_avg, but now that we only have
> one second, it causes that one second to be compressed down to 100ms in
> some cases. This is particularly noticeable when compiling a kernel in a
> slow NFS mount, and I believe it to be a very likely candidate for other
> recently reported network related interactivity problems.
>
> In testing, I can detect no negative impact of this removal.
>
> Signed-off-by: Mike Galbraith <efault@gmx.de>
> Acked-by: Ingo Molnar <mingo@elte.hu>
> Signed-off-by: Andrew Morton <akpm@osdl.org>
> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
>
> :040000 040000 28d2d8f53ab7b5dd89e846f2dcc107ce88cb695f 780a13c0f8ba5465db79c668
>
> I'm honestly not sure if my application is doing something it shouldn't or if
> this is a legitimate kernel bug. Being totally at a loss I'm filing it here.I
> just know that before the above patch I was ripping at about speeds of 9.0x and
> now I rip at 1.2x.
>
sched problems...
Martin, this might be the source of your `dvdrip' woes?
^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: [Bugme-new] [Bug 7027] New: CD Ripping speeds slow with 2.6.17
2006-08-19 18:14 ` [Bugme-new] [Bug 7027] New: CD Ripping speeds slow with 2.6.17 Andrew Morton
@ 2006-08-19 18:53 ` mbligh
2006-08-20 8:27 ` Mike Galbraith
1 sibling, 0 replies; 9+ messages in thread
From: mbligh @ 2006-08-19 18:53 UTC (permalink / raw)
To: Andrew Morton; +Cc: Ingo Molnar, Mike Galbraith, linux-kernel
Andrew Morton wrote:
> On Sat, 19 Aug 2006 11:00:22 -0700
> bugme-daemon@bugzilla.kernel.org wrote:
>
>> http://bugzilla.kernel.org/show_bug.cgi?id=7027
>>
>> Summary: CD Ripping speeds slow with 2.6.17
>> Kernel Version: 2.6.17
>> Status: NEW
>> Severity: normal
>> Owner: bzolnier@gmail.com
>> Submitter: brnewber@gmail.com
>>
>>
>> Most recent kernel where this bug did not occur: 2.6.16
>> Distribution: Gentoo
>> Hardware Environment: ASUS K8V mobo, AMD64 2200, 1GB RAM
>> Software Environment: Gentoo
>> Problem Description: Ever since 2.6.17 my cd ripping speeds with one particular
>> CD ripper/encoder (namely the one I wrote) have been slow.
>>
>> Using git bisect I tracked it down to this patch..
>>
>> 9430d58e34ec3861e1ca72f8e49105b227aad327 is first bad commit
>> commit 9430d58e34ec3861e1ca72f8e49105b227aad327
>> Author: Mike Galbraith <efault@gmx.de>
>> Date: Wed Mar 22 00:07:33 2006 -0800
>>
>> [PATCH] sched: remove sleep_avg multiplier
>>
>> Remove the sleep_avg multiplier. This multiplier was necessary back when
>> we had 10 seconds of dynamic range in sleep_avg, but now that we only have
>> one second, it causes that one second to be compressed down to 100ms in
>> some cases. This is particularly noticeable when compiling a kernel in a
>> slow NFS mount, and I believe it to be a very likely candidate for other
>> recently reported network related interactivity problems.
>>
>> In testing, I can detect no negative impact of this removal.
>>
>> Signed-off-by: Mike Galbraith <efault@gmx.de>
>> Acked-by: Ingo Molnar <mingo@elte.hu>
>> Signed-off-by: Andrew Morton <akpm@osdl.org>
>> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
>>
>> :040000 040000 28d2d8f53ab7b5dd89e846f2dcc107ce88cb695f 780a13c0f8ba5465db79c668
>>
>> I'm honestly not sure if my application is doing something it shouldn't or if
>> this is a legitimate kernel bug. Being totally at a loss I'm filing it here.I
>> just know that before the above patch I was ripping at about speeds of 9.0x and
>> now I rip at 1.2x.
>>
>
> sched problems...
>
> Martin, this might be the source of your `dvdrip' woes?
>
Nope, was an older kernel than that, and oddly doesn't always seem to
happen. I'll try to get that box upgraded, and try to reproduce it
again.
^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: [Bugme-new] [Bug 7027] New: CD Ripping speeds slow with 2.6.17
2006-08-19 18:14 ` [Bugme-new] [Bug 7027] New: CD Ripping speeds slow with 2.6.17 Andrew Morton
2006-08-19 18:53 ` mbligh
@ 2006-08-20 8:27 ` Mike Galbraith
2006-08-20 10:03 ` Mike Galbraith
1 sibling, 1 reply; 9+ messages in thread
From: Mike Galbraith @ 2006-08-20 8:27 UTC (permalink / raw)
To: brnewber; +Cc: Ingo Molnar, Martin Bligh, linux-kernel, Andrew Morton
On Sat, 2006-08-19 at 11:14 -0700, Andrew Morton wrote:
> On Sat, 19 Aug 2006 11:00:22 -0700
> bugme-daemon@bugzilla.kernel.org wrote:
>
> > http://bugzilla.kernel.org/show_bug.cgi?id=7027
> >
> > Summary: CD Ripping speeds slow with 2.6.17
> > Kernel Version: 2.6.17
> > Status: NEW
> > Severity: normal
> > Owner: bzolnier@gmail.com
> > Submitter: brnewber@gmail.com
> >
> >
> > Most recent kernel where this bug did not occur: 2.6.16
> > Distribution: Gentoo
> > Hardware Environment: ASUS K8V mobo, AMD64 2200, 1GB RAM
> > Software Environment: Gentoo
> > Problem Description: Ever since 2.6.17 my cd ripping speeds with one particular
> > CD ripper/encoder (namely the one I wrote) have been slow.
> >
> > Using git bisect I tracked it down to this patch..
> >
> > 9430d58e34ec3861e1ca72f8e49105b227aad327 is first bad commit
> > commit 9430d58e34ec3861e1ca72f8e49105b227aad327
> > Author: Mike Galbraith <efault@gmx.de>
> > Date: Wed Mar 22 00:07:33 2006 -0800
> >
> > [PATCH] sched: remove sleep_avg multiplier
> >
> > Remove the sleep_avg multiplier. This multiplier was necessary back when
> > we had 10 seconds of dynamic range in sleep_avg, but now that we only have
> > one second, it causes that one second to be compressed down to 100ms in
> > some cases. This is particularly noticeable when compiling a kernel in a
> > slow NFS mount, and I believe it to be a very likely candidate for other
> > recently reported network related interactivity problems.
> >
> > In testing, I can detect no negative impact of this removal.
> >
> > Signed-off-by: Mike Galbraith <efault@gmx.de>
> > Acked-by: Ingo Molnar <mingo@elte.hu>
> > Signed-off-by: Andrew Morton <akpm@osdl.org>
> > Signed-off-by: Linus Torvalds <torvalds@osdl.org>
> >
> > :040000 040000 28d2d8f53ab7b5dd89e846f2dcc107ce88cb695f 780a13c0f8ba5465db79c668
> >
> > I'm honestly not sure if my application is doing something it shouldn't or if
> > this is a legitimate kernel bug. Being totally at a loss I'm filing it here.I
> > just know that before the above patch I was ripping at about speeds of 9.0x and
> > now I rip at 1.2x.
It's pretty difficult imagining this patch being responsible for an IO
regression. The scheduling advantages for applications which sleep even
a little is still absolutely massive.
> sched problems...
I'm skeptical. Is the source for this application available? I'd like
to see this problem.
-Mike
^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: [Bugme-new] [Bug 7027] New: CD Ripping speeds slow with 2.6.17
2006-08-20 8:27 ` Mike Galbraith
@ 2006-08-20 10:03 ` Mike Galbraith
2006-08-20 11:11 ` Mike Galbraith
0 siblings, 1 reply; 9+ messages in thread
From: Mike Galbraith @ 2006-08-20 10:03 UTC (permalink / raw)
To: brnewber; +Cc: Ingo Molnar, Martin Bligh, linux-kernel, Andrew Morton
On Sun, 2006-08-20 at 08:27 +0000, Mike Galbraith wrote:
> I'm skeptical. Is the source for this application available? I'd like
> to see this problem.
(never mind. saw your other post, found source)
^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: [Bugme-new] [Bug 7027] New: CD Ripping speeds slow with 2.6.17
2006-08-20 10:03 ` Mike Galbraith
@ 2006-08-20 11:11 ` Mike Galbraith
2006-08-20 13:48 ` Jan Engelhardt
0 siblings, 1 reply; 9+ messages in thread
From: Mike Galbraith @ 2006-08-20 11:11 UTC (permalink / raw)
To: brnewber; +Cc: Ingo Molnar, Martin Bligh, linux-kernel, Andrew Morton
On Sun, 2006-08-20 at 10:03 +0000, Mike Galbraith wrote:
> On Sun, 2006-08-20 at 08:27 +0000, Mike Galbraith wrote:
>
> > I'm skeptical. Is the source for this application available? I'd like
> > to see this problem.
>
> (never mind. saw your other post, found source)
Hm. I can't get better than 1.4x rip speed out of it with a stock SuSE
10.1 kernel (2.6.16). It's also using truckloads of cpu, whereas the CD
rippers that came with this distro use a percent or two.
-Mike
^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: [Bugme-new] [Bug 7027] New: CD Ripping speeds slow with 2.6.17
2006-08-20 11:11 ` Mike Galbraith
@ 2006-08-20 13:48 ` Jan Engelhardt
2006-08-20 17:28 ` Ryan Newberry
0 siblings, 1 reply; 9+ messages in thread
From: Jan Engelhardt @ 2006-08-20 13:48 UTC (permalink / raw)
To: Mike Galbraith
Cc: brnewber, Ingo Molnar, Martin Bligh, linux-kernel, Andrew Morton
>> > I'm skeptical. Is the source for this application available? I'd like
>> > to see this problem.
>>
>> (never mind. saw your other post, found source)
>
>Hm. I can't get better than 1.4x rip speed out of it with a stock SuSE
>10.1 kernel (2.6.16). It's also using truckloads of cpu, whereas the CD
>rippers that came with this distro use a percent or two.
What command did you use to rip?
Jan Engelhardt
--
^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: [Bugme-new] [Bug 7027] New: CD Ripping speeds slow with 2.6.17
2006-08-20 13:48 ` Jan Engelhardt
@ 2006-08-20 17:28 ` Ryan Newberry
2006-08-20 22:56 ` Mike Galbraith
2006-08-22 12:02 ` Jan Engelhardt
0 siblings, 2 replies; 9+ messages in thread
From: Ryan Newberry @ 2006-08-20 17:28 UTC (permalink / raw)
To: Jan Engelhardt
Cc: Mike Galbraith, Ingo Molnar, Martin Bligh, linux-kernel,
Andrew Morton
Jan Engelhardt wrote:
>>>> I'm skeptical. Is the source for this application available? I'd like
>>>> to see this problem.
>>>>
>>> (never mind. saw your other post, found source)
>>>
>> Hm. I can't get better than 1.4x rip speed out of it with a stock SuSE
>> 10.1 kernel (2.6.16). It's also using truckloads of cpu, whereas the CD
>> rippers that came with this distro use a percent or two.
>>
>
> What command did you use to rip?
>
>
>
> Jan Engelhardt
>
The ripper he's using is ripoff I assume (source code here:
http://prdownloads.sourceforge.net/ripoffc/ripoff-0.8.tar.gz?download
extraction functionality contained in src/RipOffExtractor.c) . It uses
libparanoia to do its job, like the cdparanoia command. On my system,
ripoff has high CPU usage with a 2.6.16 kernel as well, but it reports a
9.0x rate on average.
Could the fact that it has such high CPU usage be a possible reason I am
experiencing a slower ripping speed (1.2x) when the patch that was git
bisected is applied?
--
Ryan Newberry
http://ripoffc.sourceforge.net
"All mankind is divided into three classes: those that are immovable, those that are movable, and those that move." - Benjamin Franklin
^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: [Bugme-new] [Bug 7027] New: CD Ripping speeds slow with 2.6.17
2006-08-20 17:28 ` Ryan Newberry
@ 2006-08-20 22:56 ` Mike Galbraith
2006-08-22 12:02 ` Jan Engelhardt
1 sibling, 0 replies; 9+ messages in thread
From: Mike Galbraith @ 2006-08-20 22:56 UTC (permalink / raw)
To: Ryan Newberry
Cc: Jan Engelhardt, Ingo Molnar, Martin Bligh, linux-kernel,
Andrew Morton
On Sun, 2006-08-20 at 13:28 -0400, Ryan Newberry wrote:
> Jan Engelhardt wrote:
> >>>> I'm skeptical. Is the source for this application available? I'd like
> >>>> to see this problem.
> >>>>
> >>> (never mind. saw your other post, found source)
> >>>
> >> Hm. I can't get better than 1.4x rip speed out of it with a stock SuSE
> >> 10.1 kernel (2.6.16). It's also using truckloads of cpu, whereas the CD
> >> rippers that came with this distro use a percent or two.
> >>
> >
> > What command did you use to rip?
> >
> >
> >
> > Jan Engelhardt
> >
> The ripper he's using is ripoff I assume (source code here:
> http://prdownloads.sourceforge.net/ripoffc/ripoff-0.8.tar.gz?download
> extraction functionality contained in src/RipOffExtractor.c) . It uses
> libparanoia to do its job, like the cdparanoia command. On my system,
> ripoff has high CPU usage with a 2.6.16 kernel as well, but it reports a
> 9.0x rate on average.
Watching the .16 kernel, it boosts to interactive status frequently, but
even with this mega-boost, it uses so much cpu that it repeatedly falls
into the expire (unbounded latency) category.
At this point, I think this app has problems.
> Could the fact that it has such high CPU usage be a possible reason I am
> experiencing a slower ripping speed (1.2x) when the patch that was git
> bisected is applied?
Short answer, with a lot of interpolation, yes.
-Mike
^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: [Bugme-new] [Bug 7027] New: CD Ripping speeds slow with 2.6.17
2006-08-20 17:28 ` Ryan Newberry
2006-08-20 22:56 ` Mike Galbraith
@ 2006-08-22 12:02 ` Jan Engelhardt
1 sibling, 0 replies; 9+ messages in thread
From: Jan Engelhardt @ 2006-08-22 12:02 UTC (permalink / raw)
To: Ryan Newberry
Cc: Mike Galbraith, Ingo Molnar, Martin Bligh, linux-kernel,
Andrew Morton
>> > rippers that came with this distro use a percent or two.
>>
>> What command did you use to rip?
>>
> The ripper he's using is ripoff I assume (source code here:
I would suggest trying another one, possibly not based on cdparanoia.
Jan Engelhardt
--
^ permalink raw reply [flat|nested] 9+ messages in thread
end of thread, other threads:[~2006-08-22 12:06 UTC | newest]
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[not found] <200608191800.k7JI0ML0015395@fire-2.osdl.org>
2006-08-19 18:14 ` [Bugme-new] [Bug 7027] New: CD Ripping speeds slow with 2.6.17 Andrew Morton
2006-08-19 18:53 ` mbligh
2006-08-20 8:27 ` Mike Galbraith
2006-08-20 10:03 ` Mike Galbraith
2006-08-20 11:11 ` Mike Galbraith
2006-08-20 13:48 ` Jan Engelhardt
2006-08-20 17:28 ` Ryan Newberry
2006-08-20 22:56 ` Mike Galbraith
2006-08-22 12:02 ` Jan Engelhardt
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