Date: Tue, 23 Mar 2004 09:26:33 +0100 From: =?ISO-8859-1?Q?S=F8ren_Schmidt?= <sos@DeepCore.dk> To: Eirik Oeverby <ltning-freebsd-current@anduin.net> Cc: freebsd-current@freebsd.org Subject: Re: sound issues in -CURRENT Message-ID: <405FF4B9.30905@DeepCore.dk> In-Reply-To: <405FED9B.3050106@anduin.net> References: <20040309070524.40ad96f5.ryan@slipgate.org> <20040312232251.48c0c57d.ryan@slipgate.org> <20040317170020.7d50d0f4.ryan@slipgate.org> <405FED9B.3050106@anduin.net>
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Eirik Oeverby wrote: > Hi, > > The problem persists, has always persisted, and any message I've posted > indicating anything else is to be ignored ;) > > Heavy disk I/O seems to be a trigger for the problem. I always hear the > screwups, but i.e. when building mozilla or openoffice (during the > extract phase with heavy I/O), sound almost slows down to a complete > stop, stutters and hicks and cracks all the time - to a point where the > music is almost impossible to even identify anymore. > > I've tried forcing my soundcard (C-Media and SB Live!) to use a 'free' > IRQ, i.e. no IRQ sharing - but this doesn't help. > One good way to reproduce atleast the audible result of the problem is > to load a kernel module (even something like samba support) while sound > is playing. Try and thou shall hear. > > Suffice to say, if FreeBSD 5.x goes -STABLE with this issue still > present it will be a major 'turn off' for many, notwithstanding the > argument that FreeBSD is not for desktop use anyway :P I think you are suffering from the high interrupt latency in -current, this combined with a soundcard with a small buffer would easily lead to your problems. A slow disk or PIO mode could also be troublesome in some cases. You do have witness etc turned off right ? -- -Søren
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