From: Nick Piggin <npiggin@suse.de>
To: Pekka Enberg <penberg@cs.helsinki.fi>
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
Christoph Lameter <cl@linux-foundation.org>,
Christoph Lameter <cl@linux.com>,
linux-mm@kvack.org, LKML <linux-kernel@vger.kernel.org>,
Andrew Morton <akpm@linux-foundation.org>,
David Rientjes <rientjes@google.com>,
Zhang Yanmin <yanmin_zhang@linux.intel.com>,
Matthew Wilcox <willy@linux.intel.com>,
Matt Mackall <mpm@selenic.com>, Mel Gorman <mel@csn.ul.ie>
Subject: Re: [RFC V2 SLEB 00/14] The Enhanced(hopefully) Slab Allocator
Date: Wed, 26 May 2010 03:40:45 +1000 [thread overview]
Message-ID: <20100525174045.GI20853@laptop> (raw)
In-Reply-To: <AANLkTinqDzRcWd9RzS_o8BUy7uWCls_4jIhWtdYcF5Uo@mail.gmail.com>
On Tue, May 25, 2010 at 08:35:05PM +0300, Pekka Enberg wrote:
> On Tue, May 25, 2010 at 8:19 PM, Nick Piggin <npiggin@suse.de> wrote:
> >> I'm not totally convinced but I guess we're about to find that out.
> >> How do you propose we benchmark SLAB while we clean it up
> >
> > Well the first pass will be code cleanups, bootstrap simplifications.
> > Then looking at what debugging features were implemented in SLUB but not
> > SLAB and what will be useful to bring over from there.
>
> Bootstrap might be easy to clean up but the biggest source of cruft
> comes from the deeply inlined, complex allocation paths. Cleaning
> those up is bound to cause performance regressions if you're not
> careful.
Oh I see what you mean, just straight-line code speed regressions
could bite us when doing cleanups.
That's possible. I'll keep a close eye on generated asm.
next prev parent reply other threads:[~2010-05-25 17:40 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20100521211452.659982351@quilx.com>
[not found] ` <20100524070309.GU2516@laptop>
[not found] ` <alpine.DEB.2.00.1005240852580.5045@router.home>
[not found] ` <20100525020629.GA5087@laptop>
[not found] ` <AANLkTik2O-_Fbh-dq0sSLFJyLU7PZi4DHm85lCo4sugS@mail.gmail.com>
[not found] ` <20100525070734.GC5087@laptop>
2010-05-25 8:03 ` [RFC V2 SLEB 00/14] The Enhanced(hopefully) Slab Allocator Pekka Enberg
2010-05-25 8:16 ` Nick Piggin
2010-05-25 9:19 ` Pekka Enberg
2010-05-25 9:34 ` Nick Piggin
2010-05-25 9:53 ` Pekka Enberg
2010-05-25 10:19 ` Nick Piggin
2010-05-25 10:45 ` Pekka Enberg
2010-05-25 11:06 ` Nick Piggin
2010-05-25 15:13 ` Linus Torvalds
2010-05-25 15:43 ` Nick Piggin
2010-05-25 17:02 ` Pekka Enberg
2010-05-25 17:19 ` Nick Piggin
2010-05-25 17:35 ` Pekka Enberg
2010-05-25 17:40 ` Nick Piggin [this message]
2010-05-25 10:07 ` David Rientjes
2010-05-25 10:02 ` David Rientjes
2010-05-25 10:47 ` Pekka Enberg
2010-05-25 19:57 ` David Rientjes
[not found] ` <20100521211537.530913777@quilx.com>
[not found] ` <alpine.DEB.2.00.1006071443120.10905@chino.kir.corp.google.com>
[not found] ` <alpine.DEB.2.00.1006071729560.12482@router.home>
[not found] ` <AANLkTikOKy6ZQQh2zORJDvGDE0golvyzsvlvDj-P5cur@mail.gmail.com>
[not found] ` <alpine.DEB.2.00.1006072319330.31780@chino.kir.corp.google.com>
[not found] ` <AANLkTikQhjlCPnwiK7AZo27Xb3h-Lj2JyCeqFQaVzpHX@mail.gmail.com>
[not found] ` <alpine.DEB.2.00.1006081633450.19582@chino.kir.corp.google.com>
2010-06-09 5:55 ` [RFC V2 SLEB 01/14] slab: Introduce a constant for a unspecified node Pekka Enberg
2010-06-09 6:20 ` David Rientjes
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