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Re: [rfc][patch 1/3] slub: fix small HWCACHE_ALIGN alignment

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From: Pekka Enberg
Subject: Re: [rfc][patch 1/3] slub: fix small HWCACHE_ALIGN alignment
Date: Monday, March 3, 2008 - 2:30 pm

Hi,

On Mon, 3 Mar 2008, Nick Piggin wrote:

On Mon, Mar 3, 2008 at 11:16 PM, Christoph Lameter <clameter@sgi.com> wrote:

Well, not my definition either but SLAB has guaranteed that for small
objects in the past, so I think Nick has a point here. However, with
all this back and forth, I've lost track why this matters. I suppose
it causes regression on some workload?

                                Pekka
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Messages in current thread:
[rfc][patch 1/3] slub: fix small HWCACHE_ALIGN alignment, Nick Piggin, (Mon Mar 3, 2:34 am)
[rfc][patch 2/3] slab: introduce SMP alignment, Nick Piggin, (Mon Mar 3, 2:35 am)
[rfc][patch 3/3] use SLAB_ALIGN_SMP, Nick Piggin, (Mon Mar 3, 2:36 am)
Re: [rfc][patch 1/3] slub: fix small HWCACHE_ALIGN alignment, Pekka Enberg, (Mon Mar 3, 2:44 am)
Re: [rfc][patch 3/3] use SLAB_ALIGN_SMP, Eric Dumazet, (Mon Mar 3, 2:53 am)
Re: [rfc][patch 1/3] slub: fix small HWCACHE_ALIGN alignment, Nick Piggin, (Mon Mar 3, 5:28 am)
Re: [rfc][patch 3/3] use SLAB_ALIGN_SMP, Nick Piggin, (Mon Mar 3, 5:41 am)
Re: [rfc][patch 3/3] use SLAB_ALIGN_SMP, Eric Dumazet, (Mon Mar 3, 6:00 am)
Re: [rfc][patch 3/3] use SLAB_ALIGN_SMP, Nick Piggin, (Mon Mar 3, 6:46 am)
Re: [rfc][patch 3/3] use SLAB_ALIGN_SMP, Pekka Enberg, (Mon Mar 3, 6:53 am)
Re: [rfc][patch 3/3] use SLAB_ALIGN_SMP, Eric Dumazet, (Mon Mar 3, 7:15 am)
Re: [rfc][patch 2/3] slab: introduce SMP alignment, Christoph Lameter, (Mon Mar 3, 12:06 pm)
Re: [rfc][patch 1/3] slub: fix small HWCACHE_ALIGN alignment, Christoph Lameter, (Mon Mar 3, 12:08 pm)
Re: [rfc][patch 3/3] use SLAB_ALIGN_SMP, Christoph Lameter, (Mon Mar 3, 12:09 pm)
Re: [rfc][patch 3/3] use SLAB_ALIGN_SMP, Christoph Lameter, (Mon Mar 3, 12:10 pm)
Re: [rfc][patch 2/3] slab: introduce SMP alignment, Nick Piggin, (Mon Mar 3, 1:03 pm)
Re: [rfc][patch 1/3] slub: fix small HWCACHE_ALIGN alignment, Nick Piggin, (Mon Mar 3, 1:06 pm)
Re: [rfc][patch 2/3] slab: introduce SMP alignment, Christoph Lameter, (Mon Mar 3, 1:09 pm)
Re: [rfc][patch 3/3] use SLAB_ALIGN_SMP, Nick Piggin, (Mon Mar 3, 1:10 pm)
Re: [rfc][patch 1/3] slub: fix small HWCACHE_ALIGN alignment, Christoph Lameter, (Mon Mar 3, 1:10 pm)
Re: [rfc][patch 2/3] slab: introduce SMP alignment, Nick Piggin, (Mon Mar 3, 1:12 pm)
Re: [rfc][patch 3/3] use SLAB_ALIGN_SMP, Christoph Lameter, (Mon Mar 3, 1:12 pm)
Re: [rfc][patch 1/3] slub: fix small HWCACHE_ALIGN alignment, Nick Piggin, (Mon Mar 3, 1:17 pm)
Re: [rfc][patch 2/3] slab: introduce SMP alignment, Christoph Lameter, (Mon Mar 3, 1:17 pm)
Re: [rfc][patch 3/3] use SLAB_ALIGN_SMP, Nick Piggin, (Mon Mar 3, 1:18 pm)
Re: [rfc][patch 2/3] slab: introduce SMP alignment, Nick Piggin, (Mon Mar 3, 1:24 pm)
Re: [rfc][patch 2/3] slab: introduce SMP alignment, Pekka Enberg, (Mon Mar 3, 1:41 pm)
Re: [rfc][patch 3/3] use SLAB_ALIGN_SMP, Christoph Lameter, (Mon Mar 3, 2:14 pm)
Re: [rfc][patch 1/3] slub: fix small HWCACHE_ALIGN alignment, Christoph Lameter, (Mon Mar 3, 2:16 pm)
Re: [rfc][patch 2/3] slab: introduce SMP alignment, Christoph Lameter, (Mon Mar 3, 2:23 pm)
Re: [rfc][patch 1/3] slub: fix small HWCACHE_ALIGN alignment, Pekka Enberg, (Mon Mar 3, 2:30 pm)
Re: [rfc][patch 2/3] slab: introduce SMP alignment, Christoph Lameter, (Mon Mar 3, 2:31 pm)
Re: [rfc][patch 1/3] slub: fix small HWCACHE_ALIGN alignment, Christoph Lameter, (Mon Mar 3, 2:32 pm)
Re: [rfc][patch 1/3] slub: fix small HWCACHE_ALIGN alignment, Pekka Enberg, (Mon Mar 3, 2:35 pm)
Re: [rfc][patch 1/3] slub: fix small HWCACHE_ALIGN alignment, Nick Piggin, (Tue Mar 4, 5:06 pm)
Re: [rfc][patch 1/3] slub: fix small HWCACHE_ALIGN alignment, Nick Piggin, (Tue Mar 4, 5:08 pm)
Re: [rfc][patch 1/3] slub: fix small HWCACHE_ALIGN alignment, David Miller, (Tue Mar 4, 5:10 pm)
Re: [rfc][patch 2/3] slab: introduce SMP alignment, Nick Piggin, (Tue Mar 4, 5:16 pm)
Re: [rfc][patch 1/3] slub: fix small HWCACHE_ALIGN alignment, Nick Piggin, (Tue Mar 4, 5:28 pm)
Re: [rfc][patch 1/3] slub: fix small HWCACHE_ALIGN alignment, Christoph Lameter, (Wed Mar 5, 1:56 pm)
Re: [rfc][patch 1/3] slub: fix small HWCACHE_ALIGN alignment, Christoph Lameter, (Wed Mar 5, 2:06 pm)
Re: [rfc][patch 1/3] slub: fix small HWCACHE_ALIGN alignment, Nick Piggin, (Wed Mar 5, 7:49 pm)
Re: [rfc][patch 1/3] slub: fix small HWCACHE_ALIGN alignment, Nick Piggin, (Wed Mar 5, 7:57 pm)
Re: [rfc][patch 1/3] slub: fix small HWCACHE_ALIGN alignment, Christoph Lameter, (Thu Mar 6, 3:53 pm)
Re: [rfc][patch 1/3] slub: fix small HWCACHE_ALIGN alignment, Christoph Lameter, (Thu Mar 6, 3:56 pm)
Re: [rfc][patch 1/3] slub: fix small HWCACHE_ALIGN alignment, Nick Piggin, (Thu Mar 6, 7:04 pm)
Re: [rfc][patch 1/3] slub: fix small HWCACHE_ALIGN alignment, Christoph Lameter, (Thu Mar 6, 7:20 pm)
Re: [rfc][patch 1/3] slub: fix small HWCACHE_ALIGN alignment, Nick Piggin, (Thu Mar 6, 7:23 pm)
Re: [rfc][patch 1/3] slub: fix small HWCACHE_ALIGN alignment, Nick Piggin, (Thu Mar 6, 7:25 pm)
Re: [rfc][patch 1/3] slub: fix small HWCACHE_ALIGN alignment, Christoph Lameter, (Thu Mar 6, 7:26 pm)
Re: [rfc][patch 1/3] slub: fix small HWCACHE_ALIGN alignment, Christoph Lameter, (Thu Mar 6, 7:27 pm)
Re: [rfc][patch 1/3] slub: fix small HWCACHE_ALIGN alignment, Nick Piggin, (Thu Mar 6, 7:32 pm)
Re: [rfc][patch 1/3] slub: fix small HWCACHE_ALIGN alignment, Nick Piggin, (Thu Mar 6, 7:33 pm)
Re: [rfc][patch 1/3] slub: fix small HWCACHE_ALIGN alignment, Christoph Lameter, (Thu Mar 6, 7:33 pm)
Re: [rfc][patch 1/3] slub: fix small HWCACHE_ALIGN alignment, Christoph Lameter, (Thu Mar 6, 7:54 pm)
Re: [rfc][patch 1/3] slub: fix small HWCACHE_ALIGN alignment, Nick Piggin, (Thu Mar 6, 8:10 pm)
Re: [rfc][patch 1/3] slub: fix small HWCACHE_ALIGN alignment, Christoph Lameter, (Thu Mar 6, 8:18 pm)
Re: [rfc][patch 1/3] slub: fix small HWCACHE_ALIGN alignment, Nick Piggin, (Thu Mar 6, 8:22 pm)
Re: [rfc][patch 1/3] slub: fix small HWCACHE_ALIGN alignment, Christoph Lameter, (Thu Mar 6, 8:58 pm)
Re: [rfc][patch 1/3] slub: fix small HWCACHE_ALIGN alignment, Nick Piggin, (Thu Mar 6, 9:05 pm)
Re: [rfc][patch 2/3] slab: introduce SMP alignment, Nick Piggin, (Thu Mar 6, 9:37 pm)
Re: [rfc][patch 2/3] slab: introduce SMP alignment, Christoph Lameter, (Thu Mar 6, 10:11 pm)
Re: [rfc][patch 2/3] slab: introduce SMP alignment, Nick Piggin, (Thu Mar 6, 10:19 pm)
Re: [rfc][patch 1/3] slub: fix small HWCACHE_ALIGN alignment, Nick Piggin, (Thu Mar 6, 10:23 pm)
Re: [rfc][patch 2/3] slab: introduce SMP alignment, Christoph Lameter, (Thu Mar 6, 10:26 pm)
Re: [rfc][patch 2/3] slab: introduce SMP alignment, Nick Piggin, (Thu Mar 6, 10:37 pm)
Re: [rfc][patch 2/3] slab: introduce SMP alignment, Nick Piggin, (Tue Mar 11, 12:13 am)
Re: [rfc][patch 2/3] slab: introduce SMP alignment, Christoph Lameter, (Tue Mar 11, 11:21 pm)