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Subject: Re: kern.sched.quantum: Creepy, sadistic scheduler
To: Peter <pmc@citylink.dinoex.sub.org>, freebsd-stable@FreeBSD.ORG
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From: Eugene Grosbein <eugen@grosbein.net>
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Date: Thu, 5 Apr 2018 12:55:14 +0700
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04.04.2018 21:16, Peter wrote:

> // With nCPU compute-bound processes running, with SCHED_ULE, any other
> // process that is interactive (which to me means frequently waiting for
> // I/O) gets ABYSMAL performance -- over an order of magnitude worse
> // than it gets with SCHED_4BSD under the same conditions. --
> https://lists.freebsd.org/pipermail/freebsd-stable/2011-December/064984.html
> 
> And this describes quite exactly what I perceive.
> Now, I would like to ask: what has been done about this issue?

I see no reasons to use SHED_ULE for such single core systems and use SCHED_BSD.