From owner-freebsd-performance@FreeBSD.ORG Tue Jan 1 22:51:50 2008 Return-Path: Delivered-To: freebsd-performance@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 4A33C16A417 for ; Tue, 1 Jan 2008 22:51:50 +0000 (UTC) (envelope-from gofp-freebsd-performance@m.gmane.org) Received: from ciao.gmane.org (main.gmane.org [80.91.229.2]) by mx1.freebsd.org (Postfix) with ESMTP id EDD4F13C44B for ; Tue, 1 Jan 2008 22:51:49 +0000 (UTC) (envelope-from gofp-freebsd-performance@m.gmane.org) Received: from list by ciao.gmane.org with local (Exim 4.43) id 1J9pxW-00045I-1Y for freebsd-performance@freebsd.org; Tue, 01 Jan 2008 22:51:42 +0000 Received: from 78-1-101-174.adsl.net.t-com.hr ([78.1.101.174]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Tue, 01 Jan 2008 22:51:42 +0000 Received: from ivoras by 78-1-101-174.adsl.net.t-com.hr with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Tue, 01 Jan 2008 22:51:42 +0000 X-Injected-Via-Gmane: http://gmane.org/ To: freebsd-performance@freebsd.org From: Ivan Voras Date: Tue, 01 Jan 2008 23:51:35 +0100 Lines: 56 Message-ID: References: <20071201205609.GA54238@harmless.hu> <200712012108.lB1L8qAd005766@lava.sentex.ca> <20071201211012.GA55519@harmless.hu> <20071201122122.S884@192.168.1.107> <20071204130810.GA77186@harmless.hu> <47779AA7.2060801@FreeBSD.org> <20071230132451.GA61295@harmless.hu> <47779EBC.5020900@FreeBSD.org> <20071230134354.GA63555@harmless.hu> <4777A65C.8020406@FreeBSD.org> <20071230141118.GA67574@harmless.hu> <4777AB9C.1010003@FreeBSD.org> <20080101122038.S9795@delplex.bde.org> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="------------enig53008F8958A7B025C4DEDF62" X-Complaints-To: usenet@ger.gmane.org X-Gmane-NNTP-Posting-Host: 78-1-101-174.adsl.net.t-com.hr User-Agent: Thunderbird 2.0.0.9 (Windows/20071031) In-Reply-To: <20080101122038.S9795@delplex.bde.org> X-Enigmail-Version: 0.95.5 Sender: news Subject: Re: mysql scaling questions X-BeenThere: freebsd-performance@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Performance/tuning List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 01 Jan 2008 22:51:50 -0000 This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --------------enig53008F8958A7B025C4DEDF62 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Bruce Evans wrote: > FreeBSD has more layers, with less optimization in each layer. Normall= y > this doesn't matter, since everyone knows that syscalls are expensive > and avoids them :-). My point is that the majority of applications are written for Linux and they are both syscall-intensive and faster there, so maybe something can be done in FreeBSD. > No Pipe-based Context Switching? That should be included in benchmarks= to > show FreeBSD slowness :-), since it is affected by both slow syscalls a= nd > slow context switches. Unfortunately, I found out this one on my own application. > Um, execl and process creation are not syscall-intensive. They take ab= out > 1 syscall each. Yes, in what amounts to a tight loop. They don't try to measure syscalls directly but I'd say they are intensive. > Linux wins this benchmark by a lot mainly because too much weight is gi= ven > to the file copy benchmarks In this particular instance I don't care about file system performance (and I believe that unixbench's benchmarks are outdated in this way and measure more of the file system cache than they should). Though it would be nice to have a FreeBSD file system that doesn't suck :) --------------enig53008F8958A7B025C4DEDF62 Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.5 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFHesP4ldnAQVacBcgRAnpSAJ9yS1wBPTPCe8f05U4Ss/B5X1IQAACfZ/eF 8NX5KHwLhBIF2Y1SDdgqQPk= =6AM9 -----END PGP SIGNATURE----- --------------enig53008F8958A7B025C4DEDF62--