From owner-freebsd-current@FreeBSD.ORG Mon Dec 15 23:25:11 2003 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 32F3A16A4CE for ; Mon, 15 Dec 2003 23:25:11 -0800 (PST) Received: from ahk.pu.ru (ahk.pu.ru [193.124.85.198]) by mx1.FreeBSD.org (Postfix) with ESMTP id 4E3CE43D35 for ; Mon, 15 Dec 2003 23:25:07 -0800 (PST) (envelope-from batuto@yb3791.spb.edu) Received: from wg.pu.ru (wg.pu.ru [193.124.85.219]) by ahk.pu.ru (8.12.9p2/8.12.9) with ESMTP id hBG7P5E7071651; Tue, 16 Dec 2003 10:25:05 +0300 (MSK) (envelope-from batuto@yb3791.spb.edu) Received: (from uucp@localhost) by wg.pu.ru (8.9.1a/8.9.1) with UUCP id HAA00395; Tue, 16 Dec 2003 07:25:04 GMT Received: by yb3791.spb.edu (Postfix, from userid 1000) id 5F24A4DE6; Tue, 16 Dec 2003 10:23:00 +0300 (MSK) From: "Yan V. Batuto" To: Matt Loschert , Munish Chopra Date: Tue, 16 Dec 2003 10:23:00 +0300 User-Agent: KMail/1.5.4 References: <20031216010608.E4CAC16A4D0@hub.freebsd.org> In-Reply-To: <20031216010608.E4CAC16A4D0@hub.freebsd.org> MIME-Version: 1.0 Content-Disposition: inline Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Message-Id: <200312161023.00227.batuto@wgc.chem.pu.ru> Content-Transfer-Encoding: 7bit cc: current@freebsd.org Subject: Re: 5.2-RELEASE TODO X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 16 Dec 2003 07:25:11 -0000 > On Mon, 15 Dec 2003, Munish Chopra wrote: > > > On 2003-12-15 14:09 +0000, Mathew Kanner wrote: > > > On Dec 15, Munish Chopra wrote: > > > > > > > > I'm not personally seeing any LOR's, but audio playback slows down under > > > > load, and every few seconds I hear popping noises during audio playback, > > > > whether under load or not. > > > > > > > > I've got a simple SB16: > > > > pcm0: port 0xd800-0xd83f irq 5 at device 15.0 on > > > > pci0 > > > > pcm0: > > > > > > Hello Munish, > > > I would realy like to help you and others. Please describe in > > > detail the circumstances that create the problem. Are you > > > experiencing buffer overruns or underruns? How many devices are > > > sharing the IRQ? What are they? What happens when you cat a raw file > > > to the device? Does this happen with VCHANs? Have you tried the patch > > > I posted to -current under the heading "sound patch for pop & > > > crackles"? > > > Please read the pcm man page for a better description on how > > > the answer the above. > > > > > > > There are two distinct problems in my case: > > > > 1) Load can be virtually zero, moderate, or heavy, either way every few > > seconds (anywhere between 2 and 10 seconds or so) I hear snaps or > > pops in the output. Some are pretty hard to hear, others are obvious, > > depending on what's actually playing. > > > > 2) When untarring large gzip'ed or bzip2'ed tarballs, playback begins to > > "slow down" to something like half the normal speed or less. I first > > noticed this during portupgrade, when the XFree86 tarballs are > > unpacked. > > FWIW, I have been seeing the same thing (problem 2) while running xmms and > portupgrade on 4.9-STABLE. This particular problem is definitely not > confined to -CURRENT. Just my $0.02: Problem #1 is not confined to -CURRENT too. I hear crackles in the output sound on my old pentium running 4.9-stable. And soundcard there is "simple SB16" too -- ISA CL4135 (afair). (Sorry, I can't reach it in the moment to get full dmesg.) It looks like crackles occurs during disk activity -- they sounds exactly synchronously with IDE LED blinking. I tried to switch vchans on and off, but without any audible changes. I'll try the patch mentioned within the few days. I can post more detailed informaion about hardware if it can be helpful later. Best regards! Yan.