Date: Fri, 19 Nov 2010 15:14:13 +0200 From: Andriy Gapon <avg@freebsd.org> To: Julian Elischer <julian@freebsd.org> Cc: Lucius Windschuh <lwindschuh@googlemail.com>, freebsd-performance@freebsd.org, FreeBSD Current <freebsd-current@freebsd.org>, FreeBSD Stable <freebsd-stable@freebsd.org> Subject: Re: TTY task group scheduling Message-ID: <4CE67825.4010700@freebsd.org> In-Reply-To: <4CE58A86.6010406@freebsd.org> References: <AANLkTinHSX1%2Bs3hrHyDeU2Vfp6zekTe04XkHhTc2jtLv@mail.gmail.com> <4CE50849.106@zedat.fu-berlin.de> <4CE52177.3020306@freebsd.org> <AANLkTimq=5KJb5AGA6H0yA7AWrp%2BHZMRhfH6pnh=_NqA@mail.gmail.com> <4CE58A86.6010406@freebsd.org>
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on 18/11/2010 22:20 Julian Elischer said the following: > tty grouping is a variant of what we used to have at one stage which is > a "kernel schedulable entity group".. KSEG Or rather, I think, a concrete application of a variant of that. > the idea is that all items in a group share some characteristic and some amount > of resources. > > We stripped the KSEG out of the picture because it really complicated the picture. Yes, unfortunately. One can think about a number of applications for hierarchical schedulable resources. Even one-level group scheduling could be a very useful subcase. BTW, http://www.mjmwired.net/kernel/Documentation/cgroups.txt -- Andriy Gapon
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