tree 0fd9de664a259a627ff9de4f113662c9252e28bf
parent 3d20958190e2afa55b0b0607b7c1b36e1b1cad3e
author Willy Tarreau <w@1wt.eu> 1399483344 +0200
committer Willy Tarreau <w@1wt.eu> 1399655786 +0200
encoding latin1

MAJOR: listener: only start listeners bound to the same processes

Now that we know what processes a "bind" statement is attached to, we
have the ability to avoid starting some of them when they're not on the
proper process. This feature is disabled when running in foreground
however, so that debug mode continues to work with everything bound to
the first and only process.

The main purpose of this change is to finally allow the global stats
sockets to be each bound to a different process.

It can also be used to force haproxy to use different sockets in different
processes for the same IP:port. The purpose is that under Linux 3.9 and
above (and possibly other OSes), when multiple processes are bound to the
same IP:port via different sockets, the system is capable of performing
a perfect round-robin between the socket queues instead of letting any
process pick all the connections from a queue. This results in a smoother
load balancing and may achieve a higher performance with a large enough
maxaccept setting.