lkml.org 
[lkml]   [2003]   [Nov]   [13]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: 2.6.0test9 + 2 * P IV Xeon 2.4GHz with HT + SATA + RAID1 = scheduler problems


Catalin BOIE wrote:

>Hi!
>
>I want to tell you that 2.6.0-test gets better and better. It works very
>very well on several systems. Thank you very much, guys.
>
>I have an server (like in the subject). The problem is that the scheduler
>seems to behave weird. Sometimes a program just do nothing. There is no
>disk activity, interrupts are a little over 1000, no disk requests,
>context switches are ~40. The system is idle but it has work to do!
>Can I provide more info?
>
>I tried to put elevator=deadline and things seems worse.
>
>If I'm not mistaken, the processes are in D state. Bt I'm not sure, I must
>check again and right now I can't.
>

Hi,
Please capture a Ctrl + Scroll Lock dump when you get processes stuck in
D state.

>
>Also I suspect that scheduler doesn't pay special attention to virtual
>(HT) processors. Is this true?
>

This is correct. Are you seeing any problems with HT? I think Linus
was hoping the NUMA / SMP scheduler could be generalised a bit more
so that HT would just fall into place. This might not happen before
2.7, so the shared runqueue approach might be the next best thing
(I like it).


-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 13:58    [W:0.032 / U:0.640 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site