Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932282AbVLUNUv (ORCPT ); Wed, 21 Dec 2005 08:20:51 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932402AbVLUNUv (ORCPT ); Wed, 21 Dec 2005 08:20:51 -0500 Received: from keetweej.xs4all.nl ([213.84.46.114]:10983 "EHLO keetweej.vanheusden.com") by vger.kernel.org with ESMTP id S932282AbVLUNUu (ORCPT ); Wed, 21 Dec 2005 08:20:50 -0500 Date: Wed, 21 Dec 2005 14:20:48 +0100 From: Folkert van Heusden To: Ed Tomlinson Cc: Eric Dumazet , linux-kernel@vger.kernel.org, Andi Kleen Subject: Re: [POLL] SLAB : Are the 32 and 192 bytes caches really usefull on x86_64 machines ? Message-ID: <20051221132046.GJ27831@vanheusden.com> References: <7vbqzadgmt.fsf@assigned-by-dhcp.cox.net> <43A91C57.20102@cosmosbay.com> <200512210744.52559.edt@aei.ca> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii; x-action=pgp-signed Content-Disposition: inline In-Reply-To: <200512210744.52559.edt@aei.ca> Organization: www.unixexpert.nl X-Chameleon-Return-To: folkert@vanheusden.com X-Xfmail-Return-To: folkert@vanheusden.com X-Phonenumber: +31-6-41278122 X-URL: http://www.vanheusden.com/ X-PGP-KeyID: 1F28D8AE X-GPG-fingerprint: AC89 09CE 41F2 00B4 FCF2 B174 3019 0E8C 1F28 D8AE X-Key: http://pgp.surfnet.nl:11371/pks/lookup?op=get&search=0x1F28D8AE Read-Receipt-To: Reply-By: Thu Dec 22 11:22:45 CET 2005 X-Message-Flag: Want to extend your PGP web-of-trust? Coordinate a key-signing at www.biglumber.com User-Agent: Mutt/1.5.10i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2499 Lines: 62 -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 > > (x86_64 : PAGE_SIZE = 4096, L1_CACHE_BYTES = 64) > > On my machines, I can say that the 32 and 192 sizes could be avoided in favor > > in spending less cpu cycles in __find_general_cachep() > > Could some of you post the result of the following command on your machines : > > # grep "size-" /proc/slabinfo |grep -v DMA|cut -c1-40 > size-131072 0 0 131072 > size-65536 3 3 65536 > size-32768 0 0 32768 > size-16384 3 3 16384 > size-8192 28 28 8192 > size-4096 184 184 4096 > size-2048 272 272 2048 > size-1024 300 300 1024 > size-512 275 376 512 > size-256 717 720 256 > size-192 1120 1220 192 > size-64 7720 8568 64 > size-128 45019 65830 128 > size-32 1627 3333 32 size-131072 0 0 131072 size-65536 0 0 65536 size-32768 20 20 32768 size-16384 8 9 16384 size-8192 37 38 8192 size-4096 269 269 4096 size-2048 793 910 2048 size-1024 564 608 1024 size-512 702 856 512 size-256 1485 4005 256 size-128 1209 1350 128 size-64 2858 3363 64 size-32 1538 2714 64 Intel(R) Xeon(TM) MP CPU 3.00GHz address sizes : 40 bits physical, 48 bits virtual Folkert van Heusden - -- Try MultiTail! Multiple windows with logfiles, filtered with regular expressions, colored output, etc. etc. www.vanheusden.com/multitail/ - ---------------------------------------------------------------------- Get your PGP/GPG key signed at www.biglumber.com! - ---------------------------------------------------------------------- Phone: +31-6-41278122, PGP-key: 1F28D8AE, www.vanheusden.com -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.1 (GNU/Linux) iIMEARECAEMFAkOpVq48Gmh0dHA6Ly93d3cudmFuaGV1c2Rlbi5jb20vZGF0YS1z aWduaW5nLXdpdGgtcGdwLXBvbGljeS5odG1sAAoJEDAZDowfKNiuUUEAnR9DJq5M x+Bj1R+djzCli3bFrJXKAJ9OmCx9FKDaGl6PocRwCZSKURerPA== =vQhF -----END PGP SIGNATURE----- - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/