Date: Wed, 20 Aug 2008 21:47:01 -1000 (HST) From: Jeff Roberson <jroberson@jroberson.net> To: Andrew Reilly <andrew-freebsd@areilly.bpc-users.org> Cc: freebsd-multimedia@freebsd.org, freebsd-arch@freebsd.org Subject: Re: SCHED_ULE problem: slow single processor, realtime prio vs network stack Message-ID: <20080820214627.C30593@desktop> In-Reply-To: <20080819134005.GA85664@duncan.reilly.home> References: <20080819025019.GA27997@duncan.reilly.home> <20080818215813.H952@desktop> <20080819134005.GA85664@duncan.reilly.home>
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On Tue, 19 Aug 2008, Andrew Reilly wrote: > On Mon, Aug 18, 2008 at 10:00:12PM -1000, Jeff Roberson wrote: >> Can you tell me what % cpu the audio application uses while running? Have >> you tried nice -20 instead of rtprio? > > It's currently using about 10%, maybe a bit more. I expect > it to get heavier as I add more to it. I have hopes of it > continuing to work even at 60 to 80% of CPU. > > I haven't tried nice -20 because I don't want the priority to > drift or change, which is something that I thought the normal > levels did. I'll give it a go though, and report back. With such a low cpu utilization I wouldn't expect it's the scheduling algorithm. It may be a difference in preemption settings. Is preemption enabled in both kernels? Jeff > > Cheers, > > Andrew >
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