Date: Wed, 12 May 2004 20:32:31 +0200 From: Jens Schweikhardt <schweikh@schweikhardt.net> To: Scott Long <scottl@freebsd.org> Cc: freebsd-scsi@freebsd.org Subject: Re: 2120S Stripe - abysmal performance Message-ID: <20040512183231.GB3137@schweikhardt.net> In-Reply-To: <40A26356.409@freebsd.org> References: <FE045D4D9F7AED4CBFF1B3B813C85337051D8C0D@mail.sandvine.com> <40A26356.409@freebsd.org>
next in thread | previous in thread | raw e-mail | index | archive | help
On Wed, May 12, 2004 at 11:48:06AM -0600, Scott Long wrote: ... # I can't remember how the 2100 BIOS works, I'll have to take a look. # I thought that it was an attribute that was set when the array is # created. Yes, and once its set at array creation time it apparently can not be changed. I deleted the array and created it anew to disable read caching. This did not yield any perfomance gain by itself. After I changed the cables I now have 79MB/s (formerly only 29MB/s, a single disk has a sustained read speed of 71MB/s at the outer sectors). Next thing will be going back from forced U160 mode to U320. I'll report the results, so watch this space :-) Regards, Jens -- Jens Schweikhardt http://www.schweikhardt.net/ SIGSIG -- signature too long (core dumped)
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20040512183231.GB3137>