followup - are there known issues with using poll timeouts (2.0.7)? On Sep 7, 2010, at 3:15 PM, Matt Weinstein wrote:
> client threads wake up with AVG 3.29959 STD DEV 8.29107 MAX 390 > (all ms), they are driven from the same device thread. > > On Sep 7, 2010, at 2:45 PM, Matt Weinstein wrote: > >> I've just put enough instrumentation in to get some numbers. >> >> On Sep 7, 2010, at 4:34 AM, Martin Lucina wrote: >> >>> Matt, >>> >>> [email protected] said: >>>> I've got about 2,000 threads talking over REQ ports inproc to a >>>> single XREP port. >>>> >>>> Any thoughts as to whether this might be the cause of performance >>>> hiccups under 2.0.7? I'm polling the XREP and a few other ports in >>>> my main loop, and have already raised the device to SCHED_RR ... I >>>> believe the kernel is clocked at 1kHz and running CFS... >>> >>> What kind of performance hiccups? Can you be more specific? >>> >> >> My device thread is running at SCHED_RR pri=66, I have approximately >> 256 client threads, the time from last packet send() on REQ to last >> device recv() on XREP is averaging around 40ms with a stddev of about >> 36-40 (10,000 samples) >> >> There's limited or no variation reordering poll upcalls (reactors) >> >> The other direction (device XREP >> user REQ) is almost always nil. >> >> I haven't declared any HWMs so presumably they are infinite. >> >>> What platform are you running on? >>> >> >> Linux dev2201.corp.xplusone.com 2.6.18-194.8.1.el5xen #1 SMP Thu >> Jul 1 >> 19:41:05 EDT 2010 x86_64 x86_64 x86_64 GNU/Linux >> >> >>> -mato >>> _______________________________________________ >>> zeromq-dev mailing list >>> [email protected] >>> http://lists.zeromq.org/mailman/listinfo/zeromq-dev >> >> _______________________________________________ >> zeromq-dev mailing list >> [email protected] >> http://lists.zeromq.org/mailman/listinfo/zeromq-dev > > _______________________________________________ > zeromq-dev mailing list > [email protected] > http://lists.zeromq.org/mailman/listinfo/zeromq-dev _______________________________________________ zeromq-dev mailing list [email protected] http://lists.zeromq.org/mailman/listinfo/zeromq-dev
