Re: Scheduling with Hyperthreading

From: Mike Sullivan (mike.sullivan@alltec.com)
Date: Tue Feb 25 2003 - 16:23:25 EST


I have tried RH 2.4.18 stock redhat kernels and and 2.4.20 kernels. Both
seem to
do badly.

Is there somewhere to look to see a history of the schedular work, or do
I need
to puruse all of the changelogs to get an idea of what kernel I should
be trying.

                                                                        
                                            Regards
                                                                        
                                            Mike

Mark Hahn wrote:

>>I would to a quick snap with top, and when I saw 99.9% I assumed the the
>>process had
>>been there during the time top was starting up.
>>
>>Looking at /proc/(pid)/cpu, shows that with two jobs running they are
>>sticking to cpu 0 and 1
>>which are siblings
>>
>>
>
>ah, sorry if you said this, but which kernel are you running?
>you need a HT-aware scheduler, for sure. does your problem go away
>if you boot with noht?
>
>

-- 
----------------------------------------------------------------------
Mike Sullivan                           Director Performance Computing
@lliance Technologies,                  Voice: (416) 385-3255, 
18 Wynford Dr, Suite 407                Fax:   (416) 385-1774
Toronto, ON, Canada, M3C-3S2            Toll Free:1-877-216-3199
http://www.alltec.com

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