Re: [Qemu-devel] [PATCH] main-loop: Don't lock starve io-threads when main_loop_tlg has pending events

[Hans de Goede]

Hi,

On 10/09/2013 08:03 PM, Hans de Goede wrote:

<snip>

> So I started looking for suspecious timers under audio/*.c and immediately
> found this in audio/audio.c :
>
> static void audio_reset_timer (AudioState *s)
> {
>      if (audio_is_timer_needed ()) {
>          timer_mod (s->ts, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + 1);
>      }
>      else {
>          timer_del (s->ts);
>      }
> }
>
> static void audio_timer (void *opaque)
> {
>      audio_run ("timer");
>      audio_reset_timer (opaque);
> }
>
> Note how that is using a timer which expires every freaking nano second,
> I think it is very likely that is the culprit.

Yep, this is the culprit, patch coming up.

Regards,

Hans