Hi, On 18 February 2016 at 10:26, Florent B <flor...@coppint.com> wrote: > Hi everyone, > > Today I have a little problem with a server on Jessie. > > It acts as a load balancer with IPVS+Keepalived. > > It is clustered with another server as failover, both servers have the > same problem. Even if one of them is "slave", without charge. > > Sometime CPU load jump over 15 (1min average) and goes down to near zero > a few minutes later. In the meantime, all CPU stats are "normal" (stable > iowait, etc.). > > Here you can see my monitoring graphs for CPU Load : > http://oi65.tinypic.com/kccu9.jpg > > And there for CPU utilization : http://oi66.tinypic.com/2w6sz9s.jpg > > You can see CPU is always idle... > > Both servers are virtualized with kvm last version. > > I have other servers like this, configured the same way, which does not > have the problem. > > Does someone have an idea on how to explain this ? > > Thank you a lot. > > Florent >
When I/O is high but cpu is not comsumed at all, it could be network who is generating load. Do you have any network graph or stat ? Erick. --- IRC : zerick Blog : http://zerick.me About : http://about.me/zerick Linux User ID : 549567
