Date: Sat, 7 Apr 2018 12:30:37 +0800 From: Julian Elischer <julian@freebsd.org> To: George Mitchell <george+freebsd@m5p.com>, freebsd-stable@freebsd.org Subject: Re: kern.sched.quantum: Creepy, sadistic scheduler Message-ID: <2d3dfb30-fb34-55e4-0572-df17ceb5f66e@freebsd.org> In-Reply-To: <8cfdb8a3-86a0-17ba-1e41-ff1912a30ee9@m5p.com> References: <pa17m7$82t$1@oper.dinoex.de> <9FDC510B-49D0-4722-B695-6CD38CA20D4A@gmail.com> <8cfdb8a3-86a0-17ba-1e41-ff1912a30ee9@m5p.com>
next in thread | previous in thread | raw e-mail | index | archive | help
On 4/4/18 9:32 pm, George Mitchell wrote: > On 04/04/18 06:39, Alban Hertroys wrote: >> [...] >> That said, SCHED_ULE (the default scheduler for quite a while now) was designed with multi-CPU configurations in mind and there are claims that SCHED_4BSD works better for single-CPU configurations. You may give that a try, if you're not already on SCHED_4BSD. >> [...] > A small, disgruntled community of FreeBSD users who have never seen > proof that SCHED_ULE is better than SCHED_4BSD in any environment > continue to regularly recompile with SCHED_4BSD. I dread the day when > that becomes impossible, but at least it isn't here yet. -- George > 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.
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?2d3dfb30-fb34-55e4-0572-df17ceb5f66e>