From owner-freebsd-multimedia@freebsd.org Tue Aug 7 09:22:07 2018 Return-Path: Delivered-To: freebsd-multimedia@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 7CDF51054926 for ; Tue, 7 Aug 2018 09:22:07 +0000 (UTC) (envelope-from meka@tilda.center) Received: from mail.tilda.center (srv02.tilda.center [199.247.21.11]) by mx1.freebsd.org (Postfix) with ESMTP id 227A985A6D for ; Tue, 7 Aug 2018 09:22:06 +0000 (UTC) (envelope-from meka@tilda.center) Received: from hal9000.home.meka.rs (unknown [87.116.183.13]) by mail.tilda.center (Postfix) with ESMTPSA id 7060212090; Tue, 7 Aug 2018 11:22:04 +0200 (CEST) Date: Tue, 7 Aug 2018 11:22:04 +0200 From: Goran =?utf-8?B?TWVracSH?= To: Hans Petter Selasky Cc: freebsd-multimedia@freebsd.org Subject: Re: Choppy audio using virtual_oss Message-ID: <20180807092204.opswsmebt3tohsvj@hal9000.home.meka.rs> References: <20180807003145.7m55dlakppucpkt2@thinker.home.meka.rs> <57293b09-97c6-8b89-24eb-2497529f2ba5@selasky.org> <20180807085240.mcyaj2siqwtydjyj@hal9000.home.meka.rs> <95ed28ae-57a4-ede0-274c-3ae863d4eb0b@selasky.org> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="ckfquzmdwb4smqre" Content-Disposition: inline In-Reply-To: <95ed28ae-57a4-ede0-274c-3ae863d4eb0b@selasky.org> User-Agent: NeoMutt/20180716 X-BeenThere: freebsd-multimedia@freebsd.org X-Mailman-Version: 2.1.27 Precedence: list List-Id: Multimedia discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 07 Aug 2018 09:22:07 -0000 --ckfquzmdwb4smqre Content-Type: text/plain; charset=utf-8 Content-Disposition: inline On Tue, Aug 07, 2018 at 11:17:01AM +0200, Hans Petter Selasky wrote: > Try to use 4 ms buffering, both hardware and software. What does it mean in terms of commands to run? -s 354 for virtual_oss and -p 345 for jackd? > What is the buffer settings for ardour. I've seen some silly OSS > applications which put one and one sample by write() request to /dev/dsp. I > will not work. > > > Can you ktrace ardour and see how many bytes it is writing at a time to OSS? Ardour doesn't have those settings, as it uses jack for that. Should I try ktrace the jackd process? Thanx! Regards, meka --ckfquzmdwb4smqre Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAEBCAAdFiEE1WIFkXy2ZeMKjjKEWj1TknovrLYFAltpZLgACgkQWj1Tknov rLZ7vQ//eo7rxKpuO1TTlIIBXF9GonYalDQcc+Wlo1CS4B2bQhyn2vcSXlxZCULm EM1zYMlvd+W8ueWrr9CkoQMzIKt31mC4nFs10HJ/1IYagiSdsJcZGka5H3arVF8I X3igbJ+txBerPIr8LQXCrYiVS53AsBlkOfSAR4IPoachzWuCnaldOjiaxjGgIT+J 2/aeK5OoErZ5RYUG+aFURATjX8WnbEbYjhkyMB6Iycb7AIPGZ2u1ZfEuRPpNUdcK 6IspYoa65Ywyu2vtItQaBrqaGzrNhL8KwUaux8mjw/6Yxgywoja21MBXATJj5CVD 3DZzj271BHTx05dK0ulUgxNjA970XRUwgi35RfbEo2D8NrUB0TBISnxihAFqAHxX j/5eXtrspWno1kJbufSDFyAiK0ZR3xyvaqwskIVnsRm5ARgQjw08xQjLvNLQJOu2 xJ5Jfkk61Dvz1iFpVjVGmKr6tfqmXditMcs090jBHa7ctGqVrtGq14l8p+o9gA8Y j56Exv8/nuCip58XbQAl/pf81QA1h4+JFbSa3/EKoAyHxObAJH3dHyf+DXO71BgH fr9jbFEnh62DdSQsdVUnIwt3NveFhgDHxoFYhIpZYkWt1qzy4StfR+HHtwTNZHev I7qRXl4lPsk++7SpMXwdYPXsPREchi4P3vTlwQYdtBbwfsLvZxk= =Jc5X -----END PGP SIGNATURE----- --ckfquzmdwb4smqre--