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

[Paolo Bonzini]

Il 09/10/2013 14:58, Hans de Goede ha scritto:
> 
> 
> I still think we should add my patch in some form, since the lock
> starvation
> caused by timers set to expire in the past could still happen in other
> cases,
> esp for timer users who take a time stamp once and then add incremental
> values to trigger the next run, these can get behind quite a bit if there
> are latency spikes, and we don't wont to run without ever releasing the
> lock while these are catching up.

I agree.  Do you also agree that the equivalent workaround, before
Alex's patch, was MIN_REARM_TIMER_NS (and thus 250 microseconds)?

Paolo