I haven't heard anything back on this. Does anybody else see the worker process using 25-50% of one CPU when the system is completely idle when using RHEL6 or CentOS 6? Is that expected? I'd also appreciate a "no, I don't see that".
Thanks, Dennis On Thu, Mar 12, 2015 at 3:34 AM, Dennis Cammer <[email protected]> wrote: > We currently use storm 0.9.2 and upgraded from Redhat Enterprise Linux 4 > to Redhat Enterprise Linux 6. After the upgrade, we saw that the CPU usage > when the system is idle is a lot higher on the new system. It's now around > ~55%, when it was around ~14% on RHEL4 with the same topology. > Looking at the threads using the CPU, there is no single thread using a > lot of CPU, but the CPU usage is distributed between many threads. > Increasing "topology.sleep.spout.wait.strategy.time.ms" from 1 to 25 ms > helped to bring down the CPU from ~55% to ~30% with no single thread using > more than 1.4% CPU (most are using 0.3%). > > Has anybody seen something similar? > If you are using RHEL6, have you seen higher than expected CPU for an idle > worker? Is this expected? > > Thanks, > Dennis >
