* cpu's not sharing load evenly
@ 2002-11-02 6:20 Don Scott
0 siblings, 0 replies; only message in thread
From: Don Scott @ 2002-11-02 6:20 UTC (permalink / raw)
To: linux-smp
The hardware:
2 MP2000+
A7V266-D MPX
The 2.4.19-gentoo-r9 SMP kernel:
AthlonMP(gcc31)
MTRR
Symmetric multi-processing
Preemptible Kernel
Enhanced Real Time Clock Support
My /etc/make.conf includes:
MAKEOPTS="-j3"
My Problem:
When compiling code it seems that the sum total of all the work being
done by both cpu's is almost always equal to no more than one cpu. For
example, CPU0 45% idle - CPU1 55% idle, or CPU0 95% idle - CPU1 5% idle.
I expected the load on the cpu's to be more symmetric. It bothers me
when I see CPU0 at 100% and CPU1 twiddling it's thumbs. Not until the
load average gets over 2 or 3, do I see both cpu's go to 0% idle.
My questions:
Is this performance behavior normal? Is there anything I can do to make
the cpu's share the load more evenly?
Thank you.
--Don
^ permalink raw reply [flat|nested] only message in thread
only message in thread, other threads:[~2002-11-02 6:20 UTC | newest]
Thread overview: (only message) (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2002-11-02 6:20 cpu's not sharing load evenly Don Scott
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox