lkml.org 
[lkml]   [2009]   [Apr]   [11]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: High latency on /sys/class/thermal
On Sat, 11 Apr 2009 12:14:16 -0700
Andrew Morton <akpm@linux-foundation.org> wrote:

> (cc linux-acpi)
>
> On Sat, 11 Apr 2009 15:56:12 +0100 "Tiago Sim__es Batista"
> <tiagosbatista@gmail.com> wrote:
>
> > Hi all
> >
> > Yesterday, I recompiled my kernel (git + tuxonice)
> > v2.6.30-rc1-1002-gac91f91, there were a couple of issues, the main
> > one is ilustrated bellow.
> >
> > I am not familiar with the kernel code, but if you give me some
> > pointers, I will be glad to investigate this further
> >
> > $time cat /sys/class/thermal/thermal_zone0/temp
> > 34000
> >
> > real 0m6.613s
> > user 0m0.000s
> > sys 0m0.001s
> >
>
> Is this a regression? Was 2.6.29 OK?
>
> Thanks.

My last kernel was fine:

$ time cat /sys/class/thermal/thermal_zone0/temp
48000

real 0m0.007s
user 0m0.001s
sys 0m0.007s


I also forgot to add some information about my kernels...

The good one is 2.6.29 + tuxonice as it was the day after the 2.6.29
kernel was released.

The bad one is a pull from linus tree on april the 9th plus tuxonice on
the same day

from git (hope this helps):
$ git describe v2.6.29-tiago2-ice
v2.6.29-836-g00492ed
$ git describe v2.6.30-rc1-tiago1-ice
v2.6.30-rc1-1002-gac91f91


If tuxonice is a suspect, I will be glad to remove it and recompile.
If I have the time later this weekend, and nothing was found, I will
try to bisect this.



\
 
 \ /
  Last update: 2009-04-12 00:15    [W:0.048 / U:0.940 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site