On Sat, 19 Aug 2006 11:00:22 -0700
Summary: CD Ripping speeds slow with 2.6.17
Kernel Version: 2.6.17
Most recent kernel where this bug did not occur: 2.6.16
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
Author: Mike Galbraith <efault@xxxxxx>
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@xxxxxx>
Acked-by: Ingo Molnar <mingo@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
Signed-off-by: Linus Torvalds <torvalds@xxxxxxxx>
: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.
Martin, this might be the source of your `dvdrip' woes?