So is that CPU load reported as the result of my doing the actual work?
Thanks!
Jon Brisbin
http//jbrisbin.com
----- Original Message -----
> From: "Oleksiy Stashok" <oleksiy.stashok_at_oracle.com>
> To: users_at_grizzly.java.net
> Sent: Wednesday, July 20, 2011 4:15:31 PM
> Subject: Re: performance of Grizzly FixedThreadPool
> On 07/20/2011 11:08 PM, Jon Brisbin wrote:
> > I'm seeing a ton of CPU usage in
> > org.glassfish.grizzly.threadpool.FixedThreadPool$BasicWorker.getTask()
> > in my profiling (34%).
>
> This method can not slow down the server, it just waits for a new
> task to execute.
> If you don't run any load, you can find the server spending almost
> 100% of time in that method.
> WBR,
> Alexey.
> > I'm doing 200,000 PUTs of 1MB of data within an 8 second time span
> > (200 simultaneous users).
>
> > Here's a CSV of the profile results for this run:
>
> > "Name","Time (ms)","Samples"
>
> > "<All threads>","5931","100"
>
> > "java.lang.Thread.run()","5901","80"
>
> > "org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.run()","5890","60"
>
> > "org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.doWork()","5890","60"
>
> > "org.glassfish.grizzly.threadpool.FixedThreadPool$BasicWorker.getTask()","4292","34"
>
> > "org.glassfish.grizzly.utils.LinkedTransferQueue.take()","4292","34"
>
> > "org.glassfish.grizzly.utils.LinkedTransferQueue.xfer(Object, int,
> > long)","4292","34"
>
> > "org.glassfish.grizzly.utils.LinkedTransferQueue.awaitFulfill(LinkedTransferQueue$QNode,
> > LinkedTransferQueue$QNode, Object, int, long)","4292","34"
>
> > "java.util.concurrent.locks.LockSupport.park(Object)","4292","34"
>
> > "org.glassfish.grizzly.nio.SelectorRunner.run()","736","20"
>
> > "org.glassfish.grizzly.strategies.WorkerThreadIOStrategy$1.run()","717","5"
>
> > "org.glassfish.grizzly.threadpool.AbstractThreadPool.onTaskDequeued(Runnable)","145","1"
>
> > "org.glassfish.grizzly.utils.DelayedExecutor$DelayedRunnable.run()","10","5"
>
> > "java.lang.Object.wait(long)","10","5"
>
> > "java.lang.ref.Finalizer$FinalizerThread.run()","22","5"
>
> > "java.lang.ref.Reference$ReferenceHandler.run()","7","5"
>
> > "com.mongodb.Mongo$DBCleanerThread.run()","0","5"
>
> > "com.intellij.rt.execution.application.AppMain.main(String[])","0","5"
>
> > The last two columns are time in ms and CPU%.
>
> > This is limiting my tests as the CPU usage is slowing down my
> > server.
>
> > Thanks!
>
> > Jon Brisbin
>
> > http//jbrisbin.com
>