lkml.org 
[lkml]   [2003]   [Sep]   [2]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH] Nick's scheduler policy v10


Martin J. Bligh wrote:

>>>>Kernbench: (make -j vmlinux, maximal tasks)
>>>> Elapsed System User CPU
>>>> 2.6.0-test4 45.87 116.92 571.10 1499.00
>>>> 2.6.0-test4-nick10 46.91 114.03 584.16 1489.25
>>>>
>>>>
>>>Actually, now looks like you have significantly more idle time, so perhaps
>>>the cross-cpu (or cross-node) balancing isn't agressive enough:
>>>
>>>
>>Yeah, there is a patch for this in mm that is not in mine. It should
>>help both mine and mainline though...
>>
>
>Not convinced of that - mm performs worse than mainline for me.
>

Well, one of Con's patches caused a lot of idle time on volanomark.
The reason for the change was unclear. I guess either a fairness or
wakeup latency change (yes, it was a very scientific process, ahem).

Anyway, in the process of looking at the load balancing, we found
and fixed a problem (although it might now possibly over balance).
This did cure most of the idle problems.

So it could just be small changes causing things to go out of whack.
I will try to get better data after (if ever) the thing is working
nicely on the desktop.


-
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 13:48    [from the cache]
©2003-2014 Jasper Spaans. Advertise on this site