Re: [Nagios-devel] Less is More (Threading)

[Guest]

On 8/19/2009 3:13 PM, Steven D. Morrey wrote:
> So I've implemented multi-threading in the main event loop to force hig=
h priority events to no longer block the main thread.
> It turned out to be brain dead simple to implement.
> That has me a bit worried actually.
>
> After going through the source line by line, I see no place where event=
_list_low and event_list_high could stomp on eachother, ergo no need for =
mutexes, semaphores etc, anywhere that I was able to find.
>
> The fix I followed was simply to cut the event list high code out and p=
aste it into it's own function then perform a pthread_create right before=
we enter the main event loop.
> So now we have 2 threads where once there was only one.
> This appears to be working well, and my latencies are dropping quickly.
> =20

If possible, publish your patch, I=B4d like very much to test it.

Tks.
> If it continues to drop and tends to stay that way I'll get a patch up,=
but in the meantime, is there any place those 2 threads could take eacho=
thers cookies so to speak?
>
> Thanks in advance!
>
> Sincerely,
> Steve
>
>
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