Re: [suse-amd64] Strange "hickups"

On Fri, Sep 19, 2003 at 06:15:05PM +0200, Peter Eriksson wrote:

I'm doing some benchmarking on a dual 1.8GHz Opteron system with 4GB of RAM running SuSE 8.2 Pro BETA 9 - and mostly it looks nice, except for the occasional strange hickups. For example, I compiled the standard LINPACK Fortran benchmark program. If I run the same program twice in a row then I sometimes see a *long* delay in running time. A run with "time" shows that the delay is not in "user" time but in system:

You could profile it. oprofile is included and it will profile both your application and the kernel.

I've tried the NUMA kernel, but it doesn't make any difference.

NUMA kernel is identical to SMP kernel currently. -Andi