On 15/09/2015 01:09 μμ, Pavlos Parissis wrote: > Hi, > > Today I pushed 1.6-dev5 on server and noticed that CPU user level for > the haproxy was increased a bit without a change in the traffic. > > See attached image. > > Few things I need to explain about the setup and the graph. > > I switched from 1.5.14 to dev5 on CentOS 6.5 and haproxy balances > traffic for graphite web frontend. > > I use pidstat to capture user/sys/total cpu for haproxy which has 1 > process (nbproc <2). I fetch the total requests processed from haproxy > using haproxyadmin library. Both, metrics are stored per second. > > The upgrade took place at 10:01. > > I am going to upgrade another server tomorrow and see if I get the same > behavior. I am also going to downgrade/upgrade few times as well. > > > Here is the conf > global > log 127.0.0.1 len 2048 local2 > > chroot /var/lib/haproxy > pidfile /var/run/haproxy.pid > maxconn 100000 > user haproxy > group haproxy > daemon > > stats socket /var/lib/haproxy/stats uid 0 gid 0 mode 0440 level admin > > ssl-server-verify none > ssl-default-bind-ciphers DEFAULT:!aNULL:!eNULL:!LOW:!RC4:!MD5:!EXP > tune.ssl.default-dh-param 2048 > > ssl-default-bind-options no-sslv3 > > tune.bufsize 3271
I upgraded another box and I didn't notice any increase of CPU user level, thus I had a very good look at the CPU usage history on the 1st box and I saw similar spikes on CPU on several occasions. So, the spike I reported it is **not** related to the upgrade but to something else which I need to find. Sorry for the spam. So far I haven't observed any problems thus I am going to send all traffic to one of the upgraded nodes before I proceed upgrading all nodes. Cheers, Pavlos
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