From: William Lee Irwin III <wli@holomorphy.com>
To: dean gaudet <dean@arctic.org>
Cc: linux-kernel@vger.kernel.org
Subject: Re: 2.6.21 numa policy and huge pages not working
Date: Tue, 15 May 2007 23:12:59 -0700 [thread overview]
Message-ID: <20070516061259.GZ19966@holomorphy.com> (raw)
In-Reply-To: <Pine.LNX.4.64.0705152222550.14691@twinlark.arctic.org>
On Tue, May 15, 2007 at 10:41:06PM -0700, dean gaudet wrote:
> prior to 2.6.21 i could "numactl --interleave=all" and use SHM_HUGETLB and
> the interleave policy would be respected. as of 2.6.21 it doesn't seem to
> respect the policy on SHM_HUGETLB request.
> see test program below.
> output from pre-2.6.21:
> 2ab196200000 interleave=0-3 file=/2\040(deleted) huge dirty=32 N0=8 N1=8 N2=8 N3=8
> 2ab19a200000 default file=/SYSV00000000\040(deleted) dirty=16384 active=0 N0=4096 N1=4096 N2=4096 N3=4096
> output from 2.6.21:
> 2b49b1c00000 default file=/10\040(deleted) huge dirty=32 N3=32
> 2b49b5c00000 default file=/SYSV00000000\040(deleted) dirty=16384 active=0 N0=4096 N1=4096 N2=4096 N3=4096
> was this an intentional behaviour change? it seems to be only affecting
> SHM_HUGETLB allocations. (i haven't tested hugetlbfs yet.)
> run with "numactl --interleave=all ./shmtest"
This was not intentional. I'll search for where it broke.
-- wli
next prev parent reply other threads:[~2007-05-16 6:12 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-05-16 5:41 2.6.21 numa policy and huge pages not working dean gaudet
2007-05-16 6:12 ` William Lee Irwin III [this message]
2007-06-09 18:06 ` dean gaudet
2007-06-10 4:10 ` dean gaudet
2007-06-10 4:51 ` William Lee Irwin III
2007-06-11 16:23 ` Adam Litke
2007-06-11 21:34 ` [shm][hugetlb] Fix get_policy for stacked shared memory files Adam Litke
2007-06-12 3:36 ` dean gaudet
2007-06-12 3:51 ` William Lee Irwin III
2007-06-12 4:30 ` Andrew Morton
2007-06-12 4:48 ` William Lee Irwin III
2007-06-12 10:20 ` Andi Kleen
2007-06-12 6:20 ` Eric W. Biederman
2007-06-12 6:58 ` William Lee Irwin III
2007-06-12 14:32 ` Adam Litke
2007-06-12 18:22 ` Eric W. Biederman
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