On 02/23/2016 05:25 AM, Roman Podoliaka wrote:
So looks like it's two related problems here:
1) the distribution of load between workers is uneven. One way to fix
this is to decrease the default number of greenlets in pool [2], which
will effectively cause a particular worker to give up new connections
to other forks, as soon as there are no more greenlets available in
the pool to process incoming requests. But this alone will *only* be
effective when the concurrency level is greater than the number of
greenlets in pool. Another way would be to add a context switch to
eventlet accept() loop [8] right after spawn_n() - this is what I've
got with greenthread.sleep(0.05) [9][10] (the trade off is that we now
only can accept() 1/ 0.05 = 20 new connections per second per worker -
I'll try to experiment with numbers here).
Would greenthread.sleep(0) be enough to trigger a context switch?
Chris
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