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Problem: messages dropped due to HWM race #2161

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bluca opened this issue Oct 13, 2016 · 1 comment
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Problem: messages dropped due to HWM race #2161

bluca opened this issue Oct 13, 2016 · 1 comment

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@bluca
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bluca commented Oct 13, 2016

Using ZeroMQ in a system with throughput of several million messages per second I was observing occasional drops of small number of messages, even when HWM is set to a value sufficient to accommodate all possible bursts in the flow.

The problem seems be caused by a race between process_activate_write() and check_hwm() on peers_msgs_read variable in zmq::pipe_t.
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bluca commented Oct 13, 2016

Fixed by #1649

This fix was backported to 4.1, so using this issue for the NEWS.

@bluca bluca closed this as completed Oct 13, 2016
@daira daira mentioned this issue Feb 4, 2017
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