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From: Pawel Sikora <pluto@agmk.net>
To: Nai Xia <nai.xia@gmail.com>
Cc: Hugh Dickins <hughd@google.com>, arekm@pld-linux.org,
        Linus Torvalds <torvalds@linux-foundation.org>, linux-mm@kvack.org,
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        linux-kernel@vger.kernel.org,
        Andrew Morton <akpm@linux-foundation.org>,
        Andrea Arcangeli <aarcange@redhat.com>
Subject: Re: kernel 3.0: BUG: soft lockup: find_get_pages+0x51/0x110
Date: Fri, 21 Oct 2011 10:07:05 +0200
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On Friday 21 of October 2011 14:22:37 Nai Xia wrote:

> And as a side note. Since I notice that Pawel's workload may include OOM,

my last tests on patched (3.0.4 + migrate.c fix + vserver) kernel produce full cpu load
on dual 8-cores opterons like on this htop screenshot -> http://pluto.agmk.net/kernel/screen1.png
afaics all userspace applications usualy don't use more than half of physical memory
and so called "cache" on htop bar doesn't reach the 100%.

the patched kernel with disabled CONFIG_TRANSPARENT_HUGEPAGE (new thing in 2.6.38)
died at night, so now i'm going to disable also CONFIG_COMPACTION/MIGRATION in next
steps and stress this machine again...