Date: Tue, 07 Sep 2004 17:14:52 +0000 From: Chris Laverdure <dashevil@sympatico.ca> To: Scott Long <scottl@samsco.org> Cc: freebsd-current@freebsd.org Subject: Re: HEADS UP: Scheduler change Message-ID: <1094577291.56128.1.camel@elemental.DashEvil> In-Reply-To: <413E20FC.80801@samsco.org> References: <413E20FC.80801@samsco.org>
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On Tue, 2004-09-07 at 20:58, Scott Long wrote: > All, > > In the interest of getting RELENG_5 stable and ready for 5.3, we are > going to switch the scheduler in 6-CURRENT from SCHED_ULE to SCHED_4BSD. > Tests are showing that the 4BSD is a bit more stable under load than > ULE, and is a LOT morestable than ULE with PREEMPTION enabled. This > does not mean that ULE is being removed or that we have lost confidence > in the direction and features of ULE. By changing this we can focus on > stability for the rest of the RELENG_5 cycle. I'd encourage anyone who > is interested in the ULE scheduler to talk to Julian Elischer and Jeff > Roberson about what needs to be done with it. Once 5.3 is released we > can look at switching 6-CURRENT back to ULE if it makes sense. > > Scott Wouldn't it make sense to have them list what needs to be done with it somewhere?
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