Date: Mon, 16 Jun 2008 12:03:52 +0200 From: Alexander Leidinger <Alexander@Leidinger.net> To: Fraser Tweedale <frase@frase.id.au> Cc: freebsd-hackers@freebsd.org Subject: Re: How to probe what application does in kernel (with sound device)? Message-ID: <20080616120352.72872r6gafuop5yc@webmail.leidinger.net> In-Reply-To: <20080613235531.GA91339@bacardi> References: <4852CFE8.8040003@rawbw.com> <20080613235531.GA91339@bacardi>
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Quoting Fraser Tweedale <frase@frase.id.au> (from Sat, 14 Jun 2008 =20 09:55:32 +1000): > ktrace(1) > > From man page: > The ktrace utility enables kernel trace logging for the specified pro= - > cesses. Kernel trace data is logged to the file ktrace.out. The ker= nel > operations that are traced include system calls, namei =20 > translations, sig- > nal processing, and I/O. To work with linux programs, linux_kdump (ports) has to be used. Regarding the problem at hand, have a look at vchans (sysctl -a | grep =20 vchan). Enable them if they aren't already and test again. If there are still problems, I suggest to come over to multimedia@, =20 post the OS version, the content of /dev/sndstat, the output of =20 "sysctl -a | grep linux" and what you tried so far. Bye, Alexander. --=20 Eat drink and be merry! Tomorrow you may be in Utah. http://www.Leidinger.net Alexander @ Leidinger.net: PGP ID =3D B0063FE7 http://www.FreeBSD.org netchild @ FreeBSD.org : PGP ID =3D 72077137
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