Date: Wed, 28 May 2014 10:55:47 -0400 From: John Baldwin <jhb@freebsd.org> To: "Poul-Henning Kamp" <phk@phk.freebsd.dk> Cc: "current@freebsd.org" <current@freebsd.org> Subject: Re: Change top's notion of idle processes / threads Message-ID: <201405281055.47049.jhb@freebsd.org> In-Reply-To: <9764.1400877579@critter.freebsd.dk> References: <201405231605.26312.jhb@freebsd.org> <9764.1400877579@critter.freebsd.dk>
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On Friday, May 23, 2014 4:39:39 pm Poul-Henning Kamp wrote: > In message <201405231605.26312.jhb@freebsd.org>, John Baldwin writes: > > >In essence, top will consider any thread that has run on a CPU > >since the last update as non-idle. > > Sounds a lot more usable than the current heuristic. > > Wouldn't ki_rusage.ru_n[i]vcsw be more correct than ki_runtime ? I went ahead and checked for both. In theory we might fix our scheduler one day to notice when a CPU is dedicated to a single thread not bother with doing silly context switches back to itself in which case only ki_runtime would change. -- John Baldwin
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