Date: Fri, 4 Apr 2008 09:04:37 -0400 From: John Baldwin <jhb@freebsd.org> To: Jeff Roberson <jeff@freebsd.org> Cc: cvs-src@freebsd.org, src-committers@freebsd.org, cvs-all@freebsd.org Subject: Re: cvs commit: src/sys/kern sched_ule.c Message-ID: <200804040904.37819.jhb@freebsd.org> In-Reply-To: <200804040104.m3414hJj074163@repoman.freebsd.org> References: <200804040104.m3414hJj074163@repoman.freebsd.org>
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On Thursday 03 April 2008 09:04:43 pm Jeff Roberson wrote: > jeff 2008-04-04 01:04:43 UTC > > FreeBSD src repository > > Modified files: > sys/kern sched_ule.c > Log: > - Don't check for the ITHD pri class in tdq_load_add and rem. 4BSD > doesn't do this either. Simply check P_NOLOAD. It'd be nice if this was > in a thread flag so we didn't have an extra cache miss every time we add > and remove a thread from the run-queue. Actually, now that all interrupt threads are in a single process, it should be a per-thread flag. It was only ever intended to mask softclock since that is what did the load calculation on 4BSD so that 4BSD wouldn't always return a load of 1 even on an idle box (since softclock was always running when the load was checked). -- John Baldwin
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