Date: Tue, 4 Jul 2000 14:10:55 -0700 (PDT) From: Linh Pham <lplist@q.closedsrc.org> To: JF Prieur <jfp51@ebeing.com> Cc: freebsd-questions@FreeBSD.ORG Subject: Re: SMP performance of 4.0-Stable Message-ID: <Pine.BSF.4.21.0007041405210.4104-100000@q.closedsrc.org> In-Reply-To: <005001bfe5fb$00642ba0$ca0a000a@ackbar>
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SMP performance under FreeBSD 4.0 has been improved a bit over FreeBSD 3.x. I'm not sure if it's up to par with Windows 2000's or other commercial operating system's SMP performance though. FreeBSD has software RAID support through vinum (correct me if I'm wrong) which supports RAID 0 and 1 (possibly 0+1) but I don't know if it will do RAID 5 via software or not. I think 4.0-RELEASE has support for some hardware RAID controllers, even some of the Compaq RAID controllers. You might want to check the release notes and/or the hardware list in the handbook for the exact list of supported hardware RAID controllers. Hardware RAID controllers will usually have better performance over software RAID controllers (mostly with RAID 5) since the processor on the controller (if any) will handle the I/O processing, leaving your CPUs for other important tasks (like running a Quake server...hehe). Just remember that RAID 5 will increase read performance but will slaughter write performance ;) Software RAID is great for the budget-wary users, but if performance is more important than cost, then a lower-end (and a supported) hardware RAID controller is recommended. On Tue, 4 Jul 2000, JF Prieur wrote: > Hello, > > Our webserver (dual P2/450, 256MB RAM, 4*9GB UltraWideSCSI) is currently > running IIS, ColdFusion and MySQL. We are in the process of weaning > ourselves off of NT and implementing FreeBSD wherever it is feasible. > > How is FreeBSD's SMP performance compared to NT. Also, since MySQL, for > example, runs about 40% faster on FreeBSd than NT, if BSD's SMP > performance is not up to par with NT, would it still be worth it to > migrate it to a uniprocessor FreeBSD box? > > Just trying to see where we can get rid of NT :-) > > Also, does FreeBSD do software RAID at all like NT or will I have to buy > a RAID card (I know that performance is better but we are on a very > tight budget) > > Thanks for your help, > JF Prieur, MCSE > Benevolent Network Dictator > e being communications inc. > > The year before I was born we walked on the moon, > now 31 years later it is considered a modern feat of > science to grow tomatos in low earth orbit. > > > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-questions" in the body of the message > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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