Thanks for the improvement! (I'm not explicitly configuring fsync policy)....
Jason On Wed, Jul 23, 2014 at 12:33 PM, Jay Kreps <jay.kr...@gmail.com> wrote: > Yes, it could definitely be related to KAFKA-615. The default in 0.8.1 > is to let the OS handle disk writes. This is much more efficient as it > will schedule them in an order friendly to the layout on disk and do a > good job of merging adjacent writes. However if you are explicitly > configuring an fsync policy (either by time or number of messages) > then this is likely not the cause. > > -Jay > > On Tue, Jul 22, 2014 at 9:37 PM, Jason Rosenberg <j...@squareup.com> wrote: > > I recently upgraded some of our kafka clusters to use 0.8.1.1 (from > 0.8.0). > > It's all looking good so far. One thing I notice though (seems like a > > good thing) is that the iostat utilization has gone way down after the > > upgrade. > > > > I'm not sure if I know exactly what could could be responsible for this, > is > > this an expected result. > > > > Is it possibly related to: > https://issues.apache.org/jira/browse/KAFKA-615 > > > > Thanks, > > > > Jason >
