Date: Sun, 26 Sep 2004 15:14:04 +0200 From: Ronald Klop <ronald-freebsd8@klop.yi.org> To: Ryan Freeman <ryan@slipgate.org>, freebsd-current@freebsd.org Subject: Re: Sound performance problems in FreeBSD Message-ID: <opsexq1qs38527sy@outgoing.local> In-Reply-To: <20040924071520.GA44388@slipgate.org> References: <20040924071520.GA44388@slipgate.org>
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On Fri, 24 Sep 2004 00:15:20 -0700, Ryan Freeman <ryan@slipgate.org> wrote: > hello, sorry to drag up a slightly outdated topic, but i just installed > 5.3beta5 > and i'm having the same issue. the last time i used freebsd was back in > march at > version 5.2 and 5.2.1. the issue existed then too, hence trying out > 5.3beta5 now to > see if it was gone. while it isn't gone, i'm glad to see people are > finally noticing > the problem as more than just "oh your hardware must be faulty". i ran > the following: > >> An easy way to reproduce these >> skips is to run `while true; do sysctl vm.vmtotal; done`, while >> playing an mp3. > > and i get the nice "person being removed from the matrix" effect. > haven't yet tried > the patch, but i want to get on that asap. can anyone else verify that > the patch > works? and furthermore, is it going to be worked into the freebsd source > post-haste? ;) thanks, > > - ryan > > hardware includes: athlon xp 1900+, 768mb DDR, sblive 5.1. I have this also. Machine: P-III 500Mhz cat /dev/sndstat FreeBSD Audio Driver (newpcm) Installed devices: pcm0: <Creative EMU10K1> at io 0x2060 irq 11 kld snd_emu10k1 (4p/2r/4v channels duplex default) I notice a lot of system time is used when running the loop. I presume system time has higher precedence than user time. Ronald. -- Ronald Klop Amsterdam, The Netherlands
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