lkml.org 
[lkml]   [2005]   [Jun]   [22]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [patch] Real-Time Preemption, -RT-2.6.12-rc6-V0.7.48-00

* William Weston <weston@sysex.net> wrote:

> Hi Ingo,
>
> Latency traces (attached) are looking a little bit better with -50-11.
> The CPU consistently seems to idle for ~200us at a time in the traces.
> Maximum wakeup latency since boot (over an hour ago) is 310us. With
> previous RT kernels, maximums would generally go over 800us.

these are all the first type of latencies, which seem to be hardware
related. Could you try to boot the UP kernel, do you see these latencies
there too? (if yes then please post those too)

> Should I apply your SMT scheduler latency fix, or is that patch for
> -mm only?

the fix is in current -RT kernels already. As can be seen from the
latency traces you got, the SMT scheduler is not causing latencies
anymore.

Ingo
-
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: 2005-06-23 00:15    [from the cache]
©2003-2011 Jasper Spaans