Date: Fri, 23 May 2014 17:32:16 -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: <201405231732.16403.jhb@freebsd.org> In-Reply-To: <9764.1400877579@critter.freebsd.dk> References: <201405231605.26312.jhb@freebsd.org> <9764.1400877579@critter.freebsd.dk>
next in thread | previous in thread | raw e-mail | index | archive | help
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 ? Hmmm, possibly. ki_runtime in the kernel is basically TSC counts and gets updated on each context switch. OTOH, I think the exported version only has microsecond granularity which is probably too small. :( I can try your suggestion. -- John Baldwin
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?201405231732.16403.jhb>