On Wed, May 6, 2009 at 7:18 AM, Florian Smeets <f...@kasimir.com> wrote: > On 05.05.09 07:30, Mark Wong wrote: >> >> Hi everyone, >> >> We (PostgreSQL community) have a HP DL380 G5 that we were using to do >> some very basic filesystem characterizations as part of a database >> performance tuning project, so we wanted to give FreeBSD a try out of >> the box. For this set of data we used 7.1. We're (us few that are >> running the tests) are fairly unfamiliar with the community here, so >> I'll be as brief as I can. We're basically wondering if the data >> we're getting out of the box is expected, and any tuning guidelines >> including what changes we should expect to see in the performance. >> > > I guess you are using the ciss driver in this box? There was a performance > regression in this driver in 7.1. This should be fixed in 7.2, which came > out recently. It is believed that you should get a whole lot better IO > performance with 7.2 if you are using the ciss driver. > > From the 7.2 release notes: > > A bug in the ciss(4) driver which caused low “max device openings” count and > led to poor performance has been fixed.
We'll have to make time to try that. :) Thanks (and to the others) for pointing that out. Regards, Mark _______________________________________________ freebsd-performance@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-performance To unsubscribe, send any mail to "freebsd-performance-unsubscr...@freebsd.org"
