Craig so how does using pthread_cond_timedwait affect socket processing? The promise of nanosleep was to wake up if an interrupt arrived say on a socket (Mind I never actually confirmed this the case, complete hearsay...)
On Thu, Feb 12, 2015 at 2:40 AM, Craig Latta craig@netjam.org wrote:
Hoi Norbert--
In 2003, while implementing remote messaging for what became the
Naiad distributed module system[1], I noticed excessive CPU usage during idle by Squeak on MacOSX (and extremely poor remote messaging performance). I prepared alternate versions of ioRelinquishProcessorForMicroseconds, comparing:
select() (AKA aioSleepForUsecs in Ian's aio API, my starting point)
pthread_cond_timedwait()
nanosleep()
pthread_cond_timedwait was the clear winner at the time. I wrote my
own relinquish primitive as part of the Flow external streaming plugin[2], and I've been using it ever since. Still seems fine. I've mentioned this before.
thanks,
-C
[1] http://netjam.org/naiad [1] http://netjam.org/flow
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