Date: Sun, 30 Mar 2003 16:38:15 +0200 (CEST) From: Lukas Ertl <l.ertl@univie.ac.at> To: Dag-Erling =?iso-8859-1?q?Sm=F8rgrav?= <des@ofug.org> Cc: freebsd-stable@freebsd.org Subject: Re: vinum performance Message-ID: <20030330163238.X23911@leelou.in.tern> In-Reply-To: <xzpbrzthqpy.fsf@flood.ping.uio.no> References: <20030330125138.K23911@leelou.in.tern> <xzpk7ehhxaf.fsf@flood.ping.uio.no> <xzpbrzthqpy.fsf@flood.ping.uio.no>
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On Sun, 30 Mar 2003, Dag-Erling Sm=F8rgrav wrote: > What would be interesting though would be to compare Vinum with ATA RAID > (see the 'create' command in the atacontrol man page) Since this is a SCSI-only system I can't test ATA raid. :-) I'm currently testing with prime stripe sizes, but it doesn't seem to help. I additionally added "options AHC_ALLOW_MEMIO" to the kernel, and it has raised write performance in the single-disk case (although I'm not happy with that one either; I expected a disk on a U160 controller to pump out more than ~65MB/s). regards, le --=20 Lukas Ertl eMail: l.ertl@univie.ac.at UNIX-Systemadministrator Tel.: (+43 1) 4277-14073 Zentraler Informatikdienst (ZID) Fax.: (+43 1) 4277-9140 der Universit=E4t Wien http://mailbox.univie.ac.at/~le/
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