Nishant, Though not directly related to your question (which is useful to know), I wondered if your use-case should present problems in any event.
Isn't the only issue with file descriptors and tcp sockets that the file descriptor cannot be released until TIME_WAIT has elapsed? TIME_WAIT is 'maximum segment lifetime * 2' (MSL*2), and is usually something between 2 and 10 minutes. 'http://en.wikipedia.org/wiki/Maximum_segment_lifetime In your use case, you're only opening a few sockets a minute, so you shouldn't overwhelm the system with sockets in TIME_WAIT state. As far as I know, the only use-cases where this matters is if your rate of socket creation and destruction is sufficiently high to result in a steadily growing number of TIME_WAIT sockets which hit the kernel limit. If, over any specific period of time of length TIME_WAIT, your rate of socket destruction is guaranteed to be below the kernel limit, then you shouldn't reach that limit at all should you? Andy On 2 January 2013 21:23, Nishant Mittal <[email protected]> wrote: > I know that zmq_sockets are not thread safe. however, is it an issue if I > ensure a socket is used ONLY by 1 thread at a time? > > the reason is ... > 1) my application creates 5 threads, does some calcs and then the threads > exit > 2) this is done every minute. so every minute 5 new threads are created. > 3) I think i will run into a file descriptor issue if i create sockets > inside the thread (every time the thread is launched). so planning to > create 5 sockets when my application starts and then use 1 socket from 1 > thread. > > is this going to be an issue? > > thanks > Nishant > > > _______________________________________________ > zeromq-dev mailing list > [email protected] > http://lists.zeromq.org/mailman/listinfo/zeromq-dev > > -- Andy Ballingall Senior Software Engineer The Foundry 6th Floor, The Communications Building, 48, Leicester Square, London, WC2H 7LT, UK Tel: +44 (0)20 7968 6828 - Fax: +44 (0)20 7930 8906 Web: http://www.thefoundry.co.uk/ The Foundry Visionmongers Ltd. Registered in England and Wales No: 4642027
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