Date: Thu, 19 Jul 2007 14:00:11 +0400 (MSD) From: Dmitry Morozovsky <marck@rinet.ru> To: Jeff Roberson <jroberson@chesapeake.net> Cc: current@freebsd.org Subject: Re: ULE/SCHED_SMP diff for 7.0 Message-ID: <20070719135750.S67760@woozle.rinet.ru> In-Reply-To: <20070719015335.Q561@10.0.0.1> References: <20070716233030.D92541@10.0.0.1> <20070718011332.A14574@woozle.rinet.ru> <20070718154306.R561@10.0.0.1> <20070719121201.P67760@woozle.rinet.ru> <20070719015335.Q561@10.0.0.1>
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On Thu, 19 Jul 2007, Jeff Roberson wrote: JR> > JR> > N Min Max Median Avg JR> > JR> > x 5 36.33 36.77 36.45 36.486 JR> > JR> > + 5 38.87 39.23 39.03 39.042 JR> > JR> > Well, I'm a bit puzzled: with new sched_ule.c system+user time slightly JR> > decreases (within one minute), while real time goes up from 39 to 44 JR> > minutes! JR> > And most of the time I see 10-50% of idle in top. JR> JR> Please try setting sysctl kern.sched.steal_thresh=2 This is the setting I JR> intend to commit. I also was only testing buildkernel which tends to run JR> more processes concurrently as compared to buildworld. Much better! buildworld+buildkernel finished in 37:23, which is almost identical to SCHED_4BSD. user+sys is stable around 64 mins. Thanks for your hard work! Sincerely, D.Marck [DM5020, MCK-RIPE, DM3-RIPN] ------------------------------------------------------------------------ *** Dmitry Morozovsky --- D.Marck --- Wild Woozle --- marck@rinet.ru *** ------------------------------------------------------------------------
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