On Fri, 2017-05-19 at 12:37 +0200, Francesco wrote: > However I realized that the API does not provide affinity control, > which > can be controlled with the sched_setaffinity() API: > https://linux.die.net/man/2/sched_setaffinity > > Could we add a ZMQ_THREAD_AFFINITY option to zmq_ctx_set() ? > > Thanks, > Francesco
Sure, feel free to send a PR to libzmq. Should be pretty easy to implement simply copying what it's being done for the other two options. Kind regards, Luca Boccassi > 2017-05-19 12:25 GMT+02:00 Francesco <[email protected]>: > > > Wow, great, I didn't know about ZMQ_THREAD_SCHED_POLICY and > > ZMQ_THREAD_PRIORITY, thanks!! > > > > Francesco > > > > > > 2017-05-19 12:20 GMT+02:00 Luca Boccassi <[email protected]>: > > > On Fri, 2017-05-19 at 11:58 +0200, Francesco wrote: > > > > Hi, > > > > I'm using ZeroMQ in an applications with several threads (up to > > > > 40). > > > > I noticed that in the "master" branch of ZeroMQ the background > > > > threads > > > > it creates are given a name. That's VERY useful, thanks! > > > > > > No problem. Had the same issue myself. One day I'd like to > > > further > > > improve it to have more specific names (I/O, reaper, shutdown), > > > but it > > > would require a lot more refactoring so for now all threads have > > > the > > > same name. > > > > > > > However my question is: my application sets the affinity and > > > > the > > > > priority of all threads it creates explicitly. Of course > > > > it cannot > > > > set the affinity/priority of ZMQ background threads. > > > > Is it possible to add an API to get the pthread_t (on Linux) or > > > > the > > > > generic thread handle (platform-dependent) associated with the > > > > ZMQ > > > > background threads? > > > > > > > > In that way my application would be able to set affinity and > > > > increase > > > > priority also of ZMQ background threads... > > > > > > There is already an API to set those. Check the manpage for > > > zmq_ctx_set, and the following options: ZMQ_THREAD_SCHED_POLICY > > > ZMQ_THREAD_PRIORITY > > > > > > Note that as the manpage says you need to set them before > > > creating any > > > socket, immediately after creating the context. > > > > > > Kind regards, > > > Luca Boccassi > > > _______________________________________________ > > > zeromq-dev mailing list > > > [email protected] > > > https://lists.zeromq.org/mailman/listinfo/zeromq-dev > > _______________________________________________ > zeromq-dev mailing list > [email protected] > https://lists.zeromq.org/mailman/listinfo/zeromq-dev
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