Date: Tue, 26 Apr 2005 00:13:13 -0400 From: Mike Tancsa <mike@sentex.net> To: Glenn Dawson <glenn@antimatter.net> Cc: freebsd-questions@freebsd.org Subject: Re: Hyperthreading and schedulers [was Re: looking for a good sata or scsi raid 0/1 controller] Message-ID: <7pfr61tjig489o3vs2e1r6jonv48h1ps8m@4ax.com> In-Reply-To: <6.1.0.6.2.20050425174609.0edc19c0@cobalt.antimatter.net> References: <426CC4D7.2070101@cyanide-studio.com> <cm2r615d1qnb51rd33acsbo3mr050jf9dm@4ax.com> <6.1.0.6.2.20050425174609.0edc19c0@cobalt.antimatter.net>
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On Mon, 25 Apr 2005 17:54:20 -0700, in sentex.lists.freebsd.questions you wrote: >At 05:33 PM 4/25/2005, Mike Tancsa wrote: >>I would start by turning off Hyperthreading as >>that only really works if you are using the ULE scheduler and thats >>broken under RELENG_5. > >I haven't noticed this mentioned before. Is using an SMP kernel on a=20 >system with a single P4 and SCHED_4BSD a waste of time? Is it=20 >detrimental? I've never noticed any problems myself, but I never went=20 >looking for any either. > See http://www.onlamp.com/pub/a/bsd/2005/01/20/smpng.html and http://lists.freebsd.org/pipermail/freebsd-stable/2003-December/005360.ht= ml to start. Also, the ULE scheduler is still broken ---Mike >-Glenn > >_______________________________________________ >freebsd-questions@freebsd.org mailing list >http://lists.freebsd.org/mailman/listinfo/freebsd-questions >To unsubscribe, send any mail to = "freebsd-questions-unsubscribe@freebsd.org" -------------------------------------------------------- Mike Tancsa, Sentex communications http://www.sentex.net Providing Internet Access since 1994 mike@sentex.net, (http://www.tancsa.com)
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