> Lastly my CPU load is less than 50% when the transactions takes place (4000 > TPS).
I would add that most likely I/O is a reason of why CPU is not fully utilized. You have two nodes both of the communicating over shared memory (I/O) and CPU will stall for some period of time. If you run your test on a single node (excluding I/O) you should see higher CPU utilization. Also the more nodes you will have the better performance should because you’ll be scaling horizontally. — Denis > On Jun 16, 2016, at 6:58 PM, Vladislav Pyatkov <[email protected]> wrote: > > Hello, > > Growth loading CPU to 90% may caused by work of GC. For determine this you > can get log and analyze log of GC [1]. Also you can use Unix utility for > detection causes like dstat or top. > > In further 50% CPU usage is maybe normal for your case (transaction > OPTIMISTIC, READ _COMMITED). You can try to use OPTIMISTIC, SERIALIZABLE > transaction, and retry if catch TransactionOptimisticException[2]. > > [1]: https://apacheignite.readme.io/docs/jvm-and-system-tuning > <https://apacheignite.readme.io/docs/jvm-and-system-tuning> > [2]: https://apacheignite.readme.io/docs/transactions > <https://apacheignite.readme.io/docs/transactions> > > On Thu, Jun 16, 2016 at 2:06 PM, amitpa <[email protected] > <mailto:[email protected]>> wrote: > My transaction attributes now are OPTIMISTIC, READ _COMMITED. > > Avoided Transaction with the same key. > > Also when there is a lot of data Ignite seems to slow down due to Cache put > and get delays. I see the CPU load increases to 90%. is this due to resizing > the cache? How can I optimize that? > > Lastly my CPU load is less than 50% when the transactions takes place (4000 > TPS). > > My Access point can take in 1 million per second so its not a bottleneck. I > am expecting more than 5000 and for transactions to scale as I keep adding > nodes. > > > > > > > -- > View this message in context: > http://apache-ignite-users.70518.x6.nabble.com/Ignite-performance-improvements-tp5623p5680.html > > <http://apache-ignite-users.70518.x6.nabble.com/Ignite-performance-improvements-tp5623p5680.html> > Sent from the Apache Ignite Users mailing list archive at Nabble.com. > > > > -- > Vladislav Pyatkov
