Date: Fri, 7 Oct 2005 10:40:20 +0800 From: Ariff Abdullah <skywizard@MyBSD.org.my> To: David Xu <davidxu@freebsd.org> Cc: freebsd-multimedia@freebsd.org, Alexander@Leidinger.net, noackjr@alumni.rice.edu Subject: Re: DAC1 / DAC2 for ex137x - ES1370/1/2/3 , CT5880/CT4730(EV1938) Message-ID: <20051007104020.54184b39.skywizard@MyBSD.org.my> In-Reply-To: <4345D8E0.2020101@freebsd.org> References: <20051006141525.4171b911.skywizard@MyBSD.org.my> <4345C235.8060205@freebsd.org> <20051007090957.28da4c9e.skywizard@MyBSD.org.my> <4345D8E0.2020101@freebsd.org>
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On Fri, 07 Oct 2005 10:09:36 +0800 David Xu <davidxu@freebsd.org> wrote: > > I have applied *_052.diff, what is difference with _052slave.diff ? > .. *slave.diff contains 'slave' implementation, a tiny layer to reduce (playback / locking) contention / latency between hardware interrupt delivery and userland io. If you experiencing random 'pops' or 'clicks', it is probably worth a try. 'Buzz'ing or continuous stuttering/crackling is another issue, mostly related to non-PREEMPTION kernel or PCI latency timing issue (which is why you get hw.snd.pcm0.latency_timer on es137x). -- Ariff Abdullah MyBSD http://www.MyBSD.org.my (IPv6/IPv4) http://staff.MyBSD.org.my (IPv6/IPv4) http://tomoyo.MyBSD.org.my (IPv6/IPv4)
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