kern/59349: patch to including locking for es137x sound driver
noackjr at alumni.rice.edu
Sun Aug 22 03:00:48 PDT 2004
The following reply was made to PR kern/59349; it has been noted by GNATS.
From: Jon Noack <noackjr at alumni.rice.edu>
To: freebsd-gnats-submit at FreeBSD.org, mat at cnd.mcgill.ca,
julian at elischer.org
Subject: Re: kern/59349: patch to including locking for es137x sound driver
Date: Sun, 22 Aug 2004 04:56:51 -0500
I'm running a modified version of the patch from this PR (which includes
the snd_mtxfree). Here's a link to the current version (note that this
patch includes the changes for kern/68594 and also slightly cleans up
the attach/detach cleanup order):
Works fine here. Don't know about 4BSD, but ULE is really struggling
right now. While playing an mp3 on a relatively idle machine, the pcm
interrupt rate is a steady 86/sec. Extracting the Firefox source while
playing an mp3 (to simulate load) causes the pcm interrupt rate to fall
and vary between 60-80/sec, causing all sorts of "excitement".
Hopefully the PREEMPTION fixes will take care of all that nonsense.
Note that this behavior is the same with/without this patch.
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