Hi Sander, On Fri, Apr 25, 2014 at 02:12:23PM +0200, Sander Klein wrote: > Hi, > > I noticed a dramatic increase in CPU usage between HAProxy ss-20140329 > and ss-20140425. With the first haproxy uses around 20% of CPU and with > the latter it eats up 80-90% of cpu and sites start to become sluggish. > Health checks take much more time to complete 1100ms vs 2ms normal. > > Nothing in my config has changed and when I downgrade everything returns > to normal.
I really don't like that at all :-( I remember that you were running with gzip compression enabled in your config, is that still the case ? It would be possible that in the past very few responess were compressed due to the bug forcing us to disable compression of chunked-encoded objects, and that now they're compressed and eat all the CPU. In order to be sure about this, could you please try to disable compression in your config just as a test ? Otherwise, despite the numerous changes, I see very few candidates for such a behaviour :-/ Thanks, Willy
