Date: Wed, 5 Jul 2006 22:13:59 -0600 From: Dan Charrois <dan@syz.com> To: vivek@khera.org Cc: freebsd-stable@freebsd.org Subject: Re: Which FreeBSD is the most stable for Dell PowerEdge 2850 Message-ID: <10C47031-8CC8-4C62-BE5B-F95579EF1DD3@syz.com>
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> I don't have any 2850's but the 1850 I have has been running 6.0 > since the BETA1, and last night just upgraded it to 6.1. No issues. > The PERC 4e/Si card is phenominally fast on this system (running 2 > disk RAID1). I'd recommend you to run 6.1 as it is stable on all of > my Dell systems that run it (and I'm migrating the older FreeBSD > boxes to 6.1 as time permits). > > If you already have > 1 CPU, you might as well leave hyperthreading > off. There are cases where it degenerates performance rather than > enhance it. > > As for mysql version, "no comment" :-) Thanks for the reply! I'm in the process of upgrading the 2850 to 6.1 now, and it seems to have gone well so far. Time will tell in the long term whether the stability is what I'm hoping for, but at least it does seem to be up and running okay so far. As for hyperthreading, I did some benchmarking back with FreeBSD 5.4 using the actual SQL databases I'm serving on the machine and loading the server with lots of simultaneous queries from remote machines similar to those which will be used in production. Back then, there was about a 10% increase in performance. I'll run the same tests again before putting the machine in production again to see if anything changed. 10% isn't much, but every bit helps, if hyperthreading doesn't cause the machine to become unstable otherwise. Thanks again! Dan -- Syzygy Research & Technology Box 83, Legal, AB T0G 1L0 Canada Phone: 780-961-2213
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