From owner-freebsd-arch Fri Mar 1 12:48:57 2002 Delivered-To: freebsd-arch@freebsd.org Received: from critter.freebsd.dk (critter.freebsd.dk [212.242.86.163]) by hub.freebsd.org (Postfix) with ESMTP id 4539937B400 for ; Fri, 1 Mar 2002 12:48:51 -0800 (PST) Received: from critter.freebsd.dk (localhost [127.0.0.1]) by critter.freebsd.dk (8.12.2/8.12.2) with ESMTP id g21KmNLv016961; Fri, 1 Mar 2002 21:48:23 +0100 (CET) (envelope-from phk@critter.freebsd.dk) To: Matthew Dillon Cc: Julian Elischer , Jeff Roberson , arch@FreeBSD.ORG Subject: Re: Slab allocator update In-Reply-To: Your message of "Fri, 01 Mar 2002 12:36:18 PST." <200203012036.g21KaIs46295@apollo.backplane.com> Date: Fri, 01 Mar 2002 21:48:23 +0100 Message-ID: <16960.1015015703@critter.freebsd.dk> From: Poul-Henning Kamp Sender: owner-freebsd-arch@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG In message <200203012036.g21KaIs46295@apollo.backplane.com>, Matthew Dillon wri tes: > >:On Wed, 27 Feb 2002, Jeff Roberson wrote: >: >:> >:> 1) Fix the last lock order reversal. >:> 2) Fixup the statistics for uma and malloc. >:> 3) Convince people to test it. >:> 4) Commit. >: >:Please try integrate it in such a form that both new and old can be >:compiled in with a config option. >:(for a while) >: >:> 5) Work on converting everything to uma_* interfaces, and adding >:> initializers. >: >:Do lots of testingto prove that it's an improvement. > > I think it only needs to have 'similar' performance to be an > improvement, since the eventual goal is to collapse the > kernel malloc and zalloc subsytems into one. I ran an earlier version of JeffR's patches on my testbox for a couple of weeks and saw a pretty consistent speedup in the order of single digit percentages on most of what I timed. I don't know if the current patch set is significantly changed in any important aspect since then. -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 phk@FreeBSD.ORG | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-arch" in the body of the message