Date: Tue, 07 Sep 2010 08:42:29 +0300 From: Andriy Gapon <avg@icyb.net.ua> To: David Xu <davidxu@freebsd.org> Cc: jan.grant@bristol.ac.uk, freebsd-stable@freebsd.org, Ivan Voras <ivoras@freebsd.org> Subject: Re: Tuning the scheduler? Desktop with a CPU-intensive task becomes rapidly unusable. Message-ID: <4C85D0C5.7060603@icyb.net.ua> In-Reply-To: <4C818F65.3000603@freebsd.org> References: <alpine.BSF.2.00.1009011357050.5858@tribble.ilrt.bris.ac.uk> <i5lr29$9ei$1@dough.gmane.org> <alpine.BSF.2.00.1009021000110.50312@tribble.ilrt.bris.ac.uk> <4C7F7C0F.8080004@icyb.net.ua> <alpine.BSF.2.00.1009021133330.5858@tribble.ilrt.bris.ac.uk> <4C818F65.3000603@freebsd.org>
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on 04/09/2010 03:14 David Xu said the following: > I think sysctl kern.sched.preempt_thresh is too low, default is only 64. I > always tune > it up to 200 on my desktop machine which is running gnome and other GUI > applications, > for a heavy GUI deskkop, I would tune it up to 224 to get better result. And turns out I have this in my sysctl.conf :-) # should give more responsivness on desktop # suggested by David Xu <davidxu@freebsd.org> kern.sched.preempt_thresh=220 Apparently I have it for so long in there that I forgot that I do. Thanks again! -- Andriy Gapon
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