Re: Periodic rant about SCHED_ULE

From: George Mitchell <george+freebsd_at_m5p.com>
Date: Tue, 13 Jul 2021 18:20:52 -0400
On 7/13/21 6:09 PM, Zaphod Beeblebrox wrote:
> [...]
> TBH, I think SCHED_ULE is a failure and the only reason more people don't
> think so is that processors are now largely too fast for people to care.
> [...]
I won't call it a failure, but I will call it the wrong default for the
GENERIC build.  And you're certainly right about why people don't care.
-- George
> 
> I know we don't have guiding principles for nice, but I would toss out the
> +/- five rule for it --- that any process more than 5 nice levels lower
> from a cpu-busy process shouldn't preempt the higher process.  I realize we
> have rtprio, but it's a pain to use.  Anyways, don't let this last comment
> distract.
> [...]


Received on Tue Jul 13 2021 - 22:20:52 UTC

Original text of this message