lkml.org 
[lkml]   [2005]   [Jan]   [19]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH]sched: Isochronous class v2 for unprivileged soft rt scheduling
Jack O'Quin wrote:
> Con Kolivas <kernel@kolivas.org> writes:

>
> Does it degrade significantly with a compile running in the background?

Check results below.

>>Full results and pretty pictures available here:
>>http://ck.kolivas.org/patches/SCHED_ISO/iso2-benchmarks/

More pretty pictures with compile load on SCHED_ISO put up there now.

> Outstanding.
>
> How do you get rid of that checkerboard grey background in the graphs?

Funny; that's the script you sent me so... beats me?

> Looking at the graphs, your system has a substantial 4 to 6 msec delay
> on approximately 40 second intervals, regardless of which scheduling
> class or how many clients you run. I'm guessing this is a recurring
> long code path in the kernel and not a scheduling artifact at all.

Probably. No matter what I do the hard drive seems to keep trying to
spin down. Might be related.

in the background:
while true ; do make clean && make ; done

SCHED_ISO with 40 clients:
*********************************************
Timeout Count . . . . . . . . :( 0)
XRUN Count . . . . . . . . . : 3
Delay Count (>spare time) . . : 20
Delay Count (>1000 usecs) . . : 0
Delay Maximum . . . . . . . . : 5841 usecs
Cycle Maximum . . . . . . . . : 891 usecs
Average DSP Load. . . . . . . : 34.1 %
Average CPU System Load . . . : 10.7 %
Average CPU User Load . . . . : 87.8 %
Average CPU Nice Load . . . . : 0.0 %
Average CPU I/O Wait Load . . : 0.7 %
Average CPU IRQ Load . . . . : 0.8 %
Average CPU Soft-IRQ Load . . : 0.0 %
Average Interrupt Rate . . . : 1711.4 /sec
Average Context-Switch Rate . : 20751.6 /sec
*********************************************

Cheers,
Con
-
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 14:09    [W:0.552 / U:0.036 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site