tree 32b229f48c49e0481f6345caa3e1f30db34b1755
parent 8f82b203d50b1a11f061b488af1e8ca373f823a7
author Christopher Faulet <cfaulet@haproxy.com> 1516808277 +0100
committer Willy Tarreau <w@1wt.eu> 1517583632 +0100
encoding latin1

MEDIUM: spoe: Use an ebtree to manage idle applets

Instead of using a list of applets with idle ones in front, we now use an
ebtree. Aapplets in the tree are idle by definition. And the key is the applet's
weight. When a new frame is queued, the first idle applet (with the lowest
weight) is woken up and its weight is increased by one. And when an applet sends
a frame to a SPOA, its weight is decremented by one.

This is empirical, but it should avoid to overuse a very few number of applets
and increase the balancing between idle applets.