Re: [patch 0/7] [RFC] SLUB: Improve allocpercpu to reduce per cpu access overhead

David Miller
2007-11-01T01:09:19Z

From: Christoph Lameter <clameter@sgi.com>
Date: Wed, 31 Oct 2007 18:01:34 -0700 (PDT)

> On Wed, 31 Oct 2007, David Miller wrote:
>
> > Without DEBUG_VM I get a loop of crashes shortly after SSHD
> > is started, I'll try to track it down.
>
> Check how much per cpu memory is in use by
>
> cat /proc/vmstat
>
> currently we have a 32k limit there.

It crashes when SSHD starts, the serial console GETTY hasn't
started up yet so I can't even log in to run those commands
Christoph.

All I can do now is bisect and then try to figure out what about the
guilty change might cause the problem.

This is on a 64-cpu sparc64 box, and fast cmpxchg local is not set, so
maybe it's one of the locking changes.