Date: Sun, 8 Apr 2018 22:19:01 +0800 From: Julian Elischer <julian@freebsd.org> To: freebsd-stable@freebsd.org Subject: Re: kern.sched.quantum: Creepy, sadistic scheduler Message-ID: <88870e92-04a0-abab-3db2-4696dd968489@freebsd.org> In-Reply-To: <f99a6c9a-2b2b-1b46-f89b-c4946eed050a@citylink.dinoex.sub.org> References: <pa17m7$82t$1@oper.dinoex.de> <9FDC510B-49D0-4722-B695-6CD38CA20D4A@gmail.com> <8cfdb8a3-86a0-17ba-1e41-ff1912a30ee9@m5p.com> <2d3dfb30-fb34-55e4-0572-df17ceb5f66e@freebsd.org> <f99a6c9a-2b2b-1b46-f89b-c4946eed050a@citylink.dinoex.sub.org>
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On 7/4/18 10:21 pm, Peter wrote: > Julian Elischer wrote: >> for a single CPU you really should compile a kernel with SMP turned >> off >> and 4BSD scheduler. >> >> ULE is just trying too hard to do stuff you don't need. > > Julian, > > if we agree on this, I am fine. > (This implies that SCHED_4BSD will *not* be retired for an > indefinite time!) There is no reason to retire it. We implemented a scheduler interface that both schedulers stick to. > > I tested yesterday, and SCHED_4BSD doesn't show the annoying behaviour. > SMP seems to be no problem (and I need that), but PREEMPTION is > definitely related to the problem (see my other message sent now). > > P. > _______________________________________________ > freebsd-stable@freebsd.org mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-stable > To unsubscribe, send any mail to > "freebsd-stable-unsubscribe@freebsd.org" >
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