[zeromq-dev] GSoC ideas inquiry
sustrik at 250bpm.com
Mon Mar 14 21:18:25 CET 2011
> Thanks for clarifying this. So we are going to support a new option,
> ZMQ_PRIORITY, which is valid only for 0MQ sockets of types PUSH and
> When we do xattach_pipes(), the current value of this option
> (i.e., priority or preference) is attached to the added outpipe as well.
> The backend load balancer, which maintains multiple priority lists, then
> puts these pipes in the right place. In this way, the load balancer
> selects a pipe to send the message in O(1) time (perhaps with the same
> find-first-bit-set instruction as the Linux kernel) instead of
> round-robin. Correct?
As for O(1), the existing load-balancer is already O(1) so it should not
be that hard. You should just hold a list of pipe-arrays, one for each
priority and fall over to the next one when there's no active pipe in
the previous one.
> OK. Then I'll try to write some POC code in this week.
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