I don't think it is a scheduler issue at all... you are likely wiping
out cache with the way your program is streaming memory data thru the
cpu. A single cpu machine doesn't have much bandwidth to spare, and
your dual is trying to use that same narrow bandwidth to feed two cpus.
quad boxes usually resort to 4-way interleaving to prevent this from
being so excessive... but your dual is just memory starved...
Robert Hyatt Computer and Information Sciences
[EMAIL PROTECTED] University of Alabama at Birmingham
(205) 934-2213 115A Campbell Hall, UAB Station
(205) 934-5473 FAX Birmingham, AL 35294-1170
On Tue, 26 Oct 1999, Jasjeet Bagla wrote:
>
> Hi,
>
> I have an SMP box (PII 333MHz) with SuSE 6.1 running 2.2.13. I am using
> it to run large simulations. If i run one job, one cycle takes about 73
> minutes of CPU time. It i run two identical jobs, this goes up to a
> little more than 90 minutes. Both the jobs are big - they require 160MB
> of RAM each. I have 384MB so that should not be a problem, in principle.
> I suspect this is a scheduler problem. I want to know if something can
> be done about it.
>
> I can supply more information if you want, i don't know what else to
> provide here as there is no oops as such.
>
> Thanks,
>
> Jasjeet
>
>
>
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