Hm, this seems counter-intuitive. Running 3x per second vs 2x per second should not really register on a modern CPU, right? Can you try this and see if you notice any difference?
On Wed, Apr 30, 2014 at 8:10 AM, Libo Yu <yu_l...@hotmail.com> wrote: > Hi team, > > We have noticed that the cpu usage of 0.8.1 has more than doubled compared > to beta1. I captured a thread dump and compared source code. I believe the > higher cpu usage is introduced by the change of timeout value used by > selector.select() in SocketServer.scala.In beta1 it is 500ms. In 0.8.1 it > is 300ms.The thread does more frequent checking and hence causes higher cpu > usage. As we don't run kafka on dedicated servers, this will impact other > applications on the same servers. > > If i revert it back to 500, any impact other than performance compromise? > Any other way to lower cpu usage? T would be ideal if this becomes a > configurable parameter. > > Thanks, > > Libo >
