Date: Tue, 26 Feb 2013 15:30:37 -0500 From: John Baldwin <jhb@freebsd.org> To: freebsd-hackers@freebsd.org Cc: Ian Lepore <ian@freebsd.org> Subject: Re: why no per-thread scheduling niceness? Message-ID: <201302261530.37936.jhb@freebsd.org> In-Reply-To: <1361560374.1185.85.camel@revolution.hippie.lan> References: <1361560374.1185.85.camel@revolution.hippie.lan>
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On Friday, February 22, 2013 2:12:54 pm Ian Lepore wrote: > I'm curious why the concept of scheduling niceness applies only to an > entire process, and it's not possible to have nice threads within a > process. Is there any fundamental reason why it couldn't be supported > with some extra bookkeeping to track niceness per thread? Only that the existing 'nice' command only works on processes and nice is traditionally a process concept. Also see things like renice. Individual threads can already alter their priority somewhat (e.g. to set an individual thread to an idle or real-time priority). -- John Baldwin
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