Date: Tue, 16 Nov 2004 17:46:54 +0100 From: Michael Riexinger <michael.riexinger@de.clara.net> To: freebsd-multimedia@freebsd.org Cc: "Rick C. Petty" <rick@megan.kiwi-computer.com> Subject: Re: XMMS & other sound troubles with 5.3-RELEASE Message-ID: <200411161746.55437.michael.riexinger@de.clara.net> In-Reply-To: <20041116163427.GA62374@megan.kiwi-computer.com> References: <20041116163427.GA62374@megan.kiwi-computer.com>
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On Tuesday 16 November 2004 17:34, Rick C. Petty wrote: > I am having troubles with 5.3's sound drivers. Once in awhile I'll > have popping noises when some programs are using sound, although I > have been unable to repeat anything reliabliy. However, I can > repeatably lock up XMMS (and thus holding /dev/dsp open, preventing > others from playing sound) if I (1) pause playback and then (2) hit > stop. I'm using the built-in OSS driver (1.2.10 libOSS.so) with no > other plugins enabled. Under heavy load, music skips significantly. > I've tried messing with hw.snd.targetirqrate, but that didn't seem to > help. > > What's very strange is that I am using the exact same setup as I was > under 5.1-p19, same config files (incl. the kernel config). I was > expecting a smooth transition, but it seems like sound is being > problematic for me. > > I've also noticed audio lag in certain programs (notorious ones such > as linux-flashplugin*, others under the linux ABI, and many games). > This was a problem back in 5.1, but since I'm emailing I thought I'd > ask a related question: How would one go about fixing this audio > lag? I've tried tuning hw.snd.targetirqrate up to 256 but that just > makes xmms skip more often and doesn't fix the lag in other programs. > I've even gone through the effort of changing buffer sizes, etc. and > recompiling the laggy programs, but many programs still are about > 0.3-1.0 seconds behind (ave: 0.5s). Take games/heretic for > instance.. Back in the 5.0-RELEASE timeframe, there was zero audio > lag, and around 5.1 to 5.2.1 sound was completely broken.. now with > 5.3-R it's lagging 0.5s on the default build. Any suggestions??? > > I did not install the xmms package(s) but built everything from > scratch. I doubt there's anything strange in my kernel config, since > it's mostly GENERIC with items removed that exist as KLDs... Maybe enabling preemption will help you. (options PREEMPTION in the kernel) Kind regards, Michael Riexinger systems engineer -- claranet gmbh internet service provider tel +49 (0) 69 - 40 80 18 - 300 email: michael.riexinger@de.clara.net http://www.claranet.de/
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