Re: [PATCH 01 of 16] remove nr_scan_inactive/active

Andrew Morton
2007-06-26T17:55:41Z

On Tue, 26 Jun 2007 13:08:57 -0400 Rik van Riel <riel@redhat.com> wrote:

> > If all tasks spend 10 minutes in shrink_active_list before the first
> > call to shrink_inactive_list that could mean you hit the race that I'm
> > just trying to fix with this very patch.
>
> I got around to testing it now. I am using AIM7 since it is
> a very anonymous memory heavy workload.
>
> Unfortunately your patch does not fix the problem, but behaves
> as I had feared :(
>
> Both the normal kernel and your kernel fall over once memory
> pressure gets big enough, but they explode differently and
> at different points.
>
> I am running the test on a quad core x86-64 system with 2GB
> memory. I am "zooming in" on the 4000 user range, because
> that is where they start to diverge. I am running aim7 to
> cross-over, which is the point at which fewer than 1 jobs/min/user
> are being completed.

with what command line and config scripts does one run aim7 to
reproduce this?

Where's the system time being spent?

Thanks.