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| author | Hans de Goede <hdegoede@redhat.com> | 2013-10-09 21:33:44 +0200 |
|---|---|---|
| committer | Gerd Hoffmann <kraxel@redhat.com> | 2013-10-23 10:37:27 +0200 |
| commit | b4350deed67b95651896ddb60cf9f765093a4848 (patch) | |
| tree | a2ce8af21eefb0fa799600a1603478bcc176ae2b /audio | |
| parent | fc8ead74674b7129e8f31c2595c76658e5622197 (diff) | |
| download | qemu-b4350deed67b95651896ddb60cf9f765093a4848.zip qemu-b4350deed67b95651896ddb60cf9f765093a4848.tar.gz qemu-b4350deed67b95651896ddb60cf9f765093a4848.tar.bz2 | |
audio: honor QEMU_AUDIO_TIMER_PERIOD instead of waking up every *nano* second
Now that we no longer have MIN_REARM_TIMER_NS a bug in the audio subsys has
clearly shown it self by trying to make a timer fire every nano second.
Note we have a similar problem in 1.6, 1.5 and older but there
MIN_REARM_TIMER_NS limits the wakeups caused by audio being active to
4000 times / second. This still causes a host cpu load of 50 % for simply
playing audio, where as with this patch git master is at 13%, so we should
backport this to 1.5 and 1.6 too.
Note this will not apply to 1.5 and 1.6 as is.
Cc: qemu-stable@nongnu.org
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Diffstat (limited to 'audio')
| -rw-r--r-- | audio/audio.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/audio/audio.c b/audio/audio.c index af4cdf6..b3db679 100644 --- a/audio/audio.c +++ b/audio/audio.c @@ -1124,7 +1124,8 @@ static int audio_is_timer_needed (void) static void audio_reset_timer (AudioState *s) { if (audio_is_timer_needed ()) { - timer_mod (s->ts, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + 1); + timer_mod (s->ts, + qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + conf.period.ticks); } else { timer_del (s->ts); |