Hi Rama,
>
> I have a question for you :)
Sure :)
> <GROUP ONE>
> I am just curious to understand what this
> problem can be.
> The waiting/owner threads are blocked/waiting on
> threadpoolexecutor$worker.run();
> My first idea was that some req went
> queued, but this is not true, because i have put maxthread >
> test_concurrency
> (test_concurrency = 45, maxthread = 64) [you can see
> that the value are correctly configured, because on
> the follow logs you
> will get some workerthread with high id]
> The avg locking time as you
> can see is more or less 400ms that is a lot for a ws (means that some
May this just shows that some threads are in idle state waiting for
some job?
> request required 400ms+<normal elaboration time> to be executed)
>
> --------------------------------------
> Time Duration Type Monitor ID
> Monitor class Waiting thread Owning thread
> 5:40.495 456 ms Blocked 34
> java.util.concurrent.locks.ReentrantLock$NonfairSync http2480-
> WorkerThread(32) [Grizzly] http2480-WorkerThread(18) [Grizzly]
> 5:40.481
> 470 ms Blocked 34 java.util.concurrent.locks.ReentrantLock
> $NonfairSync
> http2480-WorkerThread(1) [Grizzly] http2480-WorkerThread(18) [Grizzly]
>
> 5:40.470 481 ms Blocked 34 java.util.concurrent.locks.
> ReentrantLock$NonfairSync http2480-WorkerThread(61) [Grizzly]
> http2480-
> WorkerThread(18) [Grizzly]
> 5:40.371 580 ms Blocked 34 java.util.
> concurrent.locks.ReentrantLock$NonfairSync http2480-WorkerThread(24)
> [Grizzly] http2480-WorkerThread(18) [Grizzly]
> 6:23.789 438 ms Blocked
> 34 java.util.concurrent.locks.ReentrantLock$NonfairSync http2480-
> WorkerThread(45) [Grizzly] http2480-WorkerThread(33) [Grizzly]
> 6:02.245
> 455 ms Blocked 34 java.util.concurrent.locks.ReentrantLock
> $NonfairSync
> http2480-WorkerThread(59) [Grizzly] http2480-WorkerThread(33)
> [Grizzly]
>
> 6:23.878 436 ms Blocked 34 java.util.concurrent.locks.
> ReentrantLock$NonfairSync http2480-WorkerThread(0) [Grizzly] http2480-
> WorkerThread(34) [Grizzly]
> 7:19.913 402 ms Blocked 34 java.util.
> concurrent.locks.ReentrantLock$NonfairSync http2480-WorkerThread(16)
> [Grizzly] http2480-WorkerThread(39) [Grizzly]
> 7:19.884 430 ms Blocked
> 34 java.util.concurrent.locks.ReentrantLock$NonfairSync http2480-
> WorkerThread(34) [Grizzly] http2480-WorkerThread(39) [Grizzly]
> 7:19.857
> 457 ms Blocked 34 java.util.concurrent.locks.ReentrantLock
> $NonfairSync
> http2480-WorkerThread(23) [Grizzly] http2480-WorkerThread(39)
> [Grizzly]
>
> 7:19.850 463 ms Blocked 34 java.util.concurrent.locks.
> ReentrantLock$NonfairSync http2480-WorkerThread(44) [Grizzly]
> http2480-
> WorkerThread(39) [Grizzly]
> 7:19.831 481 ms Blocked 34 java.util.
> concurrent.locks.ReentrantLock$NonfairSync http2480-WorkerThread(59)
> [Grizzly] http2480-WorkerThread(39) [Grizzly]
> 8:20.366 411 ms Blocked
> 34 java.util.concurrent.locks.ReentrantLock$NonfairSync http2480-
> WorkerThread(40) [Grizzly] http2480-WorkerThread(54) [Grizzly]
> 8:20.300
> 477 ms Blocked 34 java.util.concurrent.locks.ReentrantLock
> $NonfairSync
> http2480-WorkerThread(25) [Grizzly] http2480-WorkerThread(54)
> [Grizzly]
>
> 8:20.298 478 ms Blocked 34 java.util.concurrent.locks.
> ReentrantLock$NonfairSync http2480-WorkerThread(32) [Grizzly]
> http2480-
> WorkerThread(54) [Grizzly]
> 8:20.219 558 ms Blocked 34 java.util.
> concurrent.locks.ReentrantLock$NonfairSync http2480-WorkerThread(56)
> [Grizzly] http2480-WorkerThread(54) [Grizzly]
> 8:20.216 543 ms Blocked
> 34 java.util.concurrent.locks.ReentrantLock$NonfairSync http2480-
> WorkerThread(17) [Grizzly] http2480-WorkerThread(54) [Grizzly]
> 7:52.036
> 1153 ms Blocked 34 java.util.concurrent.locks.
> ReentrantLock$NonfairSync http2480-WorkerThread(27) [Grizzly]
> http2480-
> WorkerThread(60) [Grizzly]
> 7:52.036 1154 ms Blocked 34 java.util.
> concurrent.locks.ReentrantLock$NonfairSync http2480-WorkerThread(8)
> [Grizzly] http2480-WorkerThread(60) [Grizzly]
> 6:02.289 413 ms Blocked
> 34 java.util.concurrent.locks.ReentrantLock$NonfairSync http2480-
> WorkerThread(28) [Grizzly] http2480-WorkerThread(7) [Grizzly]
> 6:02.272
> 428 ms Blocked 34 java.util.concurrent.locks.ReentrantLock
> $NonfairSync
> http2480-WorkerThread(36) [Grizzly] http2480-WorkerThread(7) [Grizzly]
>
> 6:02.271 429 ms Blocked 34 java.util.concurrent.locks.
> ReentrantLock$NonfairSync http2480-WorkerThread(51) [Grizzly]
> http2480-
> WorkerThread(7) [Grizzly]
>
>
> <GROUP TWO>
> blocked/waiting on com.sun.
> grizzly.Controller.run()
> Same of above, i need some clue to understand
> better what's up :)
> even there the locking time is pretty high, with
> 450 of avg.
> ------------------
> 845 468 ms Blocked 34 java.util.
> concurrent.locks.ReentrantLock$NonfairSync GrizzlyReadController-5
> [main] http2480-WorkerThread(39) [Grizzly]
> 7:19.845 468 ms Blocked 34
> java.util.concurrent.locks.ReentrantLock$NonfairSync
> GrizzlyReadController-1 [main] http2480-WorkerThread(39) [Grizzly]
> 7:
> 19.836 477 ms Blocked 34 java.util.concurrent.locks.
> ReentrantLock$NonfairSync GrizzlyReadController-2 [main] http2480-
> WorkerThread(39) [Grizzly]
> 7:19.836 477 ms Blocked 34 java.util.
> concurrent.locks.ReentrantLock$NonfairSync GrizzlyReadController-3
> [main] http2480-WorkerThread(39) [Grizzly]
This could be just state locker, which we use to synchronize on state
change, but it should be used just on startup, shutdown.
But these just guesses, can you pls. provide more information on that
tables? Can you pls. specify line numbers, where locks are getting
blocked?
Thanks.
WBR,
Alexey.
> --------
> GrizzlyWS
> configuration
> DefaultThreadPool.DEFAULT_MAX_THREAD_COUNT=64;
>
> DefaultThreadPool.DEFAULT_MIN_THREAD_COUNT=64;
> ws = new GrizzlyWS
> ws.
> getSelectorThread().setSelectorReadThreadsCount(6);
> ws.setMaxThreads
> (64) //probably unuseful? right now the only way to set maxthreads is
> to change
> the defthreadpool min thread to match the maxthread, and
> having all threads spawned when ws start up
>
>
>
> Tnx for your advices :)
>
>
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