Date: Wed, 23 Mar 2005 10:20:03 +0100 (CET) From: <trasz@buziaczek.pl> To: FreeBSD-gnats-submit@FreeBSD.org Subject: docs/79156: buffersize knob for sound(4) is a tunable, not a sysctl. Message-ID: <20050323092003.04D74B804F@pin.if.uz.zgora.pl> Resent-Message-ID: <200503230920.j2N9K2Oj026008@freefall.freebsd.org>
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>Number: 79156
>Category: docs
>Synopsis: buffersize knob for sound(4) is a tunable, not a sysctl.
>Confidential: no
>Severity: non-critical
>Priority: low
>Responsible: freebsd-doc
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: doc-bug
>Submitter-Id: current-users
>Arrival-Date: Wed Mar 23 09:20:01 GMT 2005
>Closed-Date:
>Last-Modified:
>Originator: trasz
>Release: FreeBSD 5.3-RELEASE-p5 i386
>Organization:
>Environment:
System: FreeBSD pin.if.uz.zgora.pl 5.3-RELEASE-p5 FreeBSD 5.3-RELEASE-p5 #0: Sun Jan 16 12:27:41 CET 2005 trasz@pin.if.uz.zgora.pl:/usr/obj/usr/src/sys/PIN i386
>Description:
sound(4) man page claims that 'hw.snd.pcm%d.buffersize' can be configured
via sysctl. that's not true, however: in /sys/dev/sound/pcm/sound.c
there is:
SYSCTL_ADD_INT(snd_sysctl_tree(dev), SYSCTL_CHILDREN(snd_sysctl_tree_top(dev)),
OID_AUTO, "buffersize", CTLFLAG_RD, &d->bufsz, 0, "");
so the sysctl is read-only. buffersize can be set via tunable
'hint.pcm.0.buffersize', either in loader.conf or device.hints.
>How-To-Repeat:
type 'man sound' and scroll two pages down.
>Fix:
>Release-Note:
>Audit-Trail:
>Unformatted:
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