From: Nick Piggin <nickpiggin@yahoo.com.au>
To: Christoph Lameter <cl@linux-foundation.org>
Cc: Pekka Enberg <penberg@cs.helsinki.fi>,
yanmin_zhang@linux.intel.com, Andi Kleen <andi@firstfloor.org>,
Matthew Wilcox <matthew@wil.cx>,
linux-kernel@vger.kernel.org, akpm@linux-foundation.org
Subject: Re: [PATCH] SLUB: revert direct page allocator pass through
Date: Sat, 24 Jan 2009 02:41:06 +1100 [thread overview]
Message-ID: <200901240241.06670.nickpiggin@yahoo.com.au> (raw)
In-Reply-To: <alpine.DEB.1.10.0901231022490.21692@qirst.com>
On Saturday 24 January 2009 02:25:06 Christoph Lameter wrote:
> On Fri, 23 Jan 2009, Pekka Enberg wrote:
> > On Fri, Jan 23, 2009 at 5:03 PM, Christoph Lameter
> >
> > <cl@linux-foundation.org> wrote:
> > > It seems that we currently need the slab allocators to compensate for
> > > the performance problems in the page allocator for these higher order
> > > allocs. I'd rather have the page allocator fixed but things are as they
> > > are.
> >
> > So, is that an ACK or a NAK for the patch?-)
>
> Doesnt that break down Nick's order-0 dominates-the-world scheme break
> down?
SLUB is your scheme. And yes it definitely goes against my liking of
order-0 allocations regardless of this patch.
> One of the reasons for doing this was to get the page allocator
> performance issues exposed and addressed.
Page allocator is never going to be as fast as slab allocator, for
issues I explained a long time ago. Not to say it can't be improved,
just stating facts.
next prev parent reply other threads:[~2009-01-23 15:41 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-01-23 8:43 Pekka J Enberg
2009-01-23 8:52 ` Nick Piggin
2009-01-23 9:04 ` Pekka Enberg
2009-01-23 15:03 ` Christoph Lameter
2009-01-23 15:12 ` Nick Piggin
2009-01-23 15:27 ` Christoph Lameter
2009-01-23 15:37 ` Nick Piggin
2009-01-23 15:44 ` Pekka Enberg
2009-01-23 15:54 ` Nick Piggin
2009-01-23 16:07 ` Pekka Enberg
2009-01-23 15:57 ` Christoph Lameter
2009-01-23 16:03 ` Pekka Enberg
2009-01-24 3:11 ` Zhang, Yanmin
2009-01-23 15:16 ` Pekka Enberg
2009-01-23 15:25 ` Christoph Lameter
2009-01-23 15:41 ` Nick Piggin [this message]
2009-01-23 15:59 ` Christoph Lameter
2009-01-23 16:17 ` Nick Piggin
2009-01-26 17:17 ` Christoph Lameter
2009-02-03 1:33 ` Nick Piggin
2009-02-03 17:08 ` Christoph Lameter
2009-01-23 15:42 ` Pekka Enberg
2009-01-23 20:12 ` Matt Mackall
2009-01-23 9:22 ` Zhang, Yanmin
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=200901240241.06670.nickpiggin@yahoo.com.au \
--to=nickpiggin@yahoo.com.au \
--cc=akpm@linux-foundation.org \
--cc=andi@firstfloor.org \
--cc=cl@linux-foundation.org \
--cc=linux-kernel@vger.kernel.org \
--cc=matthew@wil.cx \
--cc=penberg@cs.helsinki.fi \
--cc=yanmin_zhang@linux.intel.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
all inboxes | Powered by JetHome®