On 04/04/2016 05:23 μμ, Sachin Shetty wrote: > Hi, > > I am chasing some weird capacity issues in our setup. > > Haproxy which also does SSL is forwarding request to various other > servers upstream. I am seeing a simple 100MB file download from our > upstream components starts to slow down time to time like hitting as low > as 1MBPS, usually is it greater than 100MBPS. When this happens, I tried > downloading the file from the upstream component bypassing haproxy from > the same box, and that is fast enough – 100MBPS. So it seems like > haproxy is getting jammed on something.
Did you use HTTPS on the server as well? > > The only suspicious thing I see is that haproxy will be spinning on 100% > CPU. So we added nbproc 4 and I still see the same pattern, when the > speed drops, all haproxy proceses are hitting 80-100%. The request rate > when the speed drops is about 5K/minute which is only 2X of requests > when things are normal and download speeds are fine. what is user and sys level of CPU? > > We have quite a few regex and acls in our config, is there a way to > profile haproxy and see what could be slowing it down? > You better include the actual config, it will increase the level of support that you may get. Cheers, Pavlos
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