[zeromq-dev] Forwarder stops forwarding

Martin Sustrik sustrik at 250bpm.com
Thu Jun 3 08:10:44 CEST 2010


Robert,

The problem with forwarder hanging up haven't yet been reported. Have 
you been able to get back traces?

As for PGM examples these are a leftover from previous versions of 0MQ 
and should be removed IMO.

Martin

Robert Zhang wrote:
> Bit more details. We’re running the standard download zeromq-2.0.6 from 
> the website.
> 
> Linux 2.6.28-18-server #60-Ubuntu SMP
> 
> Compiled using gcc 4.3.3
> 
>  
> 
> Btw, when I configure the package with “--with-cpp --with-pgm 
> --with-pgm-examples”,  the Makefile in the perf directory seems to have 
> a path problem. It’s looking for 
>  *`../../foreign*/openpgm/libpgm-2.0.24/openpgm/pgm/examples/pgmsend.c' 
> when it should be 
>  `*../foreign*/openpgm/libpgm-2.0.24/openpgm/pgm/examples/pgmsend.c'
> 
>  
> 
> *From:* Robert Zhang
> *Sent:* Tuesday, June 01, 2010 11:12 AM
> *To:* 'zeromq-dev at lists.zeromq.org'
> *Subject:* Forwarder stops forwarding
> 
>  
> 
> Has anyone seen this problem? We have a forwarder that stops forwarding 
> messages after running for about a day pretty consistently. Seems to be 
> stuck in a lock. I’ll try to run forwarder in a debug build and maybe we 
> can get a better stack trace.  Thanks.
> 
>  
> 
> Config looks like this:
> 
> <forwarder>
> 
>     <in>
> 
>         <connect addr = "tcp://host1:30006"/>
> 
>     </in>
> 
>     <out>
> 
>         <bind addr = "tcp://eth0:30008"/>
> 
>     </out>
> 
> </forwarder>
> 
>  
> 
> (gdb) info thread
> 
>   2 Thread 0x7fd0e1d40910 (LWP 14401)  0x00007fd0e292fe48 in epoll_wait 
> () from /lib/libc.so.6
> 
>   1 Thread 0x7fd0e3c20750 (LWP 14398)  0x00007fd0e3067c34 in 
> __lll_lock_wait () from /lib/libpthread.so.0
> 
>  
> 
> (gdb) where
> 
> #0  0x00007fd0e292fe48 in epoll_wait () from /lib/libc.so.6
> 
> #1  0x00007fd0e37b0b72 in zmq::epoll_t::loop (this=0x1332b70) at 
> epoll.cpp:161
> 
> #2  0x00007fd0e37c38a7 in zmq::thread_t::thread_routine (arg_=0x1332bb0) 
> at thread.cpp:99
> 
> #3  0x00007fd0e3060a04 in start_thread () from /lib/libpthread.so.0
> 
> #4  0x00007fd0e292f80d in clone () from /lib/libc.so.6
> 
> #5  0x0000000000000000 in ?? ()
> 
>  
> 
> (gdb) where
> 
> #0  0x00007fd0e3067c34 in __lll_lock_wait () from /lib/libpthread.so.0
> 
> #1  0x00007fd0e3063295 in _L_lock_949 () from /lib/libpthread.so.0
> 
> #2  0x00007fd0e30630b8 in pthread_mutex_lock () from /lib/libpthread.so.0
> 
> #3  0x00007fd0e37c5328 in zmq::ypollset_t::poll (this=<value optimized 
> out>) at simple_semaphore.hpp:127
> 
> #4  0x00007fd0e37ac632 in zmq::app_thread_t::process_commands 
> (this=0x1331ec0, block_=128, throttle_=false) at app_thread.cpp:93
> 
> #5  0x00007fd0e37bf6ed in zmq::socket_base_t::recv (this=0x13338c0, 
> msg_=0x7fffe0c9b300, flags_=0) at socket_base.cpp:380
> 
> #6  0x0000000000408225 in main (argc=<value optimized out>, argv=<value 
> optimized out>) at ../../include/zmq.hpp:241
> 
>  
> 
> 
> ------------------------------------------------------------------------
> 
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