Date: Tue, 21 Jun 2005 19:37:34 +0200 From: Roland Smith <rsmith@xs4all.nl> To: Grant <freebsdlists@thingysrealm.myftp.org> Cc: freebsd-questions@freebsd.org Subject: Re: Sound Jitter. Message-ID: <20050621173734.GA40187@slackbox.xs4all.nl> In-Reply-To: <20050620232115.5a7a5fd0.freebsdlists@thingysrealm.myftp.org> References: <20050620213151.169df7bf.freebsdlists@thingysrealm.myftp.org> <20050620211027.GA32106@slackbox.xs4all.nl> <20050620232115.5a7a5fd0.freebsdlists@thingysrealm.myftp.org>
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--Qxx1br4bt0+wmkIi Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Mon, Jun 20, 2005 at 11:21:15PM +0100, Grant wrote: > > Try enlarging the soundcards DMA buffer; Add the following line to > > /boot/device.hints and reboot: > >=20 > > hint.pcm.0.buffersize=3D"16384" > I found the above line on google when i had a looke, i shoved it in but > with another number 65536 i dont know if that made a difference, but i > tried the exact line above with that number. >=20 > The Jitter is still there, but instead of happening when firefox is > scrolling its only when firefox is just about to finish loading > something, which i suppose would cause a CPU spike or something ? also > during playback firefox runs very very slow :/ i dontk now if this is > related at all, but with the cpu and the ram it shouldnt run that bad, > the window manager is fluxbox so thats keeping things to a minimum. Some things you might try (might be totally off-base :): - run the player at a higher priority (with nice(1)). - have the scheduler make smaller slices; set the kern.sched.quantum sysctl to a smaller value. I thought there was another sysctrl for the ratio of user process time to system time, but I can't remember. Roland --=20 R.F.Smith (http://www.xs4all.nl/~rsmith/) Please send e-mail as plain text. public key: http://www.xs4all.nl/~rsmith/pubkey.txt --Qxx1br4bt0+wmkIi Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.1 (FreeBSD) iD8DBQFCuFBeEnfvsMMhpyURAgNHAJ0SpNMgHW+pE0x7pmc4in93xEJhVgCgoA39 mOvM5bhc2HP6/XZPTMln0Us= =oW6z -----END PGP SIGNATURE----- --Qxx1br4bt0+wmkIi--
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