Date: Tue, 16 Jan 2007 23:04:11 +0100 From: Ivan Voras <ivoras@fer.hr> To: freebsd-questions@freebsd.org Subject: Re: Very Poor Raid Card Performance Message-ID: <eojhtm$cit$1@sea.gmane.org> In-Reply-To: <53186.86.54.4.134.1168964729.squirrel@www.midden.org> References: <53186.86.54.4.134.1168964729.squirrel@www.midden.org>
next in thread | previous in thread | raw e-mail | index | archive | help
This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --------------enigC8296D1B92D487B3533C96F5 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Steven Lowry wrote: > The main problem is my HD performance, it is approx 6x slower than in > windows XP, hopefully there is a solution. I have an LSI Megaraid 8x wi= th > four drives in a raid 5 configuration, in windows I was getting upto 60= MB/s > transfer rates but in FBSD I am getting upto 9MB/s. I followed the > instructions in the handbook for tuning disks and I have set dma on. > Being new to unix, I have no idea what to try or get system information= > too continue troubleshooting. > If anyone could point me in the right direction or to appropriate > documentation it would be much appreciated. First, you could try asking the question at performance/at/freebsd.org mailing list - you could get more help there. This reminds me of something I've seen on a box that's also equipped with LSI Megaraid but since disk I/O wasn't important for it, I didn't dig further and forgot about it. Maybe the driver has a problem and people on the performance list can help you. Here's a general checklist of what information to gather before sending it to performance list: * dmesg snippet (like you sent) * copy with "cp" in console, not with KDE and see if it changes anything * run 'iostat' while copying and send results * install and run "bonnie++" (disk I/O benchmark) and send results --------------enigC8296D1B92D487B3533C96F5 Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.4 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFFrUvildnAQVacBcgRAsh8AKDj87pN738EG6ouhBfBEl4ZcE25xQCfciDs 4n+QEQl5gnzrdpf6LdBrY8M= =j8gc -----END PGP SIGNATURE----- --------------enigC8296D1B92D487B3533C96F5--
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?eojhtm$cit$1>