Hi,
Please, can you let me know what is the effect of making
SelectorManager ThreadPoolExecutor as bounded ?
Thanks,
nl
On 02.06.2014 09.26, Netlancer wrote:
Hi,
yes. we increased the heap size to 8G in a machine which has 16GB
RAM. the limits.conf is configured with 300000 as soft/hard limit and
file-max is the same as hard limit. I have attached the hs_err file .
Thanks,
On 02.06.2014 08.52, Gaurav Sharma wrote:
If possible, pls provide some more info to help diagnose this. What's
the output of /etc/security/limits.conf and file-max value in
/etc/sysctl.conf?
Is 5G the max you can allocate to amq's jvm?
Sent from my iPhone
On Jun 1, 2014, at 20:06, Netlancer <[email protected]> wrote:
Hi,
We have activemq running behind an LB. we have close to 55K
connections to activemq. during cases of more than 1000 connections
gets terminated concurrently, we observe a huge spike in the number
of threads created.following which the jvm crashes. on further
investigation, these threads are pertained to executors
SelectorManager - defaultExecutor - labelled with "ActiveMQ NIO
Worker" - the executor has maximum thread pool size of Integer.MAX_VALUE
TaskRunnerFactory - defaultExecutor - labelled as "ActiveMQ Task" -
this executor as well has Integer.MAX_VALUE as the max pool size.
BrokerService.getTaskRunnerFactory - labelled as "ActiveMQ
BrokerService[%s] Task-" - this executor is also created with
Integer.MAX_VALUE
the configured persistence store is leveldb and dedicatedtaskrunner
is disabled. The JVM is running with 8GB RAM with the max heap at 5G.
following snippet from the hs_pid crash file
Java Threads: ( => current thread )
0x00007f1e42863800 JavaThread "ActiveMQ NIO Worker 9053" daemon
[_thread_blocked, id=10690,
stack(0x00007f1d6fa53000,0x00007f1d6fa8c000)]
0x00007f1ea40dc000 JavaThread "ActiveMQ NIO Worker 9047" daemon
[_thread_blocked, id=10689,
stack(0x00007f1d6fa8c000,0x00007f1d6fac5000)]
0x00007f1eac116800 JavaThread "ActiveMQ NIO Worker 9054" daemon
[_thread_blocked, id=10688,
stack(0x00007f1d6fac5000,0x00007f1d6fafe000)]
0x00007f1df43f5800 JavaThread "ActiveMQ NIO Worker 9046" daemon
[_thread_blocked, id=10687,
stack(0x00007f1d6fafe000,0x00007f1d6fb37000)]
0x00007f1e42870000 JavaThread "ActiveMQ NIO Worker 9056" daemon
[_thread_blocked, id=10686,
stack(0x00007f1d6fb37000,0x00007f1d6fb70000)]
0x00007f1ef6054800 JavaThread "ActiveMQ NIO Worker 9107" daemon
[_thread_blocked, id=10685,
stack(0x00007f1d6fb70000,0x00007f1d6fba9000)]
0x00007f1ef46af800 JavaThread "ActiveMQ NIO Worker 9059" daemon
[_thread_blocked, id=10684,
stack(0x00007f1d6fba9000,0x00007f1d6fbe2000)]
0x00007f1e240cd000 JavaThread "ActiveMQ NIO Worker 9041" daemon
[_thread_blocked, id=10683,
stack(0x00007f1d6fbe2000,0x00007f1d6fc1b000)]
0x00007f1e0016a800 JavaThread "ActiveMQ NIO Worker 9060" daemon
[_thread_blocked, id=10682,
stack(0x00007f1d6fc1b000,0x00007f1d6fc54000)]
0x00007f1e5019d800 JavaThread "ActiveMQ NIO Worker 9061" daemon
[_thread_blocked, id=10681,
stack(0x00007f1d6fc54000,0x00007f1d6fc8d000)]
0x00007f1e8006f000 JavaThread "ActiveMQ NIO Worker 9039" daemon
[_thread_blocked, id=10680,
stack(0x00007f1d6fc8d000,0x00007f1d6fcc6000)]
0x00007f1e4c7df800 JavaThread "ActiveMQ NIO Worker 9101" daemon
[_thread_blocked, id=10679,
stack(0x00007f1d6fcc6000,0x00007f1d6fcff000)]
0x00007f1da6794800 JavaThread "ActiveMQ BrokerService[MQMaster]
Task-1781" daemon [_thread_blocked, id=8302,
stack(0x00007f1db5a51000,0x00007f1db5a8a000)]
0x00007f1da6791000 JavaThread "ActiveMQ BrokerService[MQMaster]
Task-1780" daemon [_thread_blocked, id=8298,
stack(0x00007f1dc6d4c000,0x00007f1dc6d85000)]
0x00007f1da6793000 JavaThread "ActiveMQ BrokerService[MQMaster]
Task-1779" daemon [_thread_blocked, id=8296,
stack(0x00007f1dc6e30000,0x00007f1dc6e69000)]
0x00007f1da6790000 JavaThread "ActiveMQ BrokerService[MQMaster]
Task-1778" daemon [_thread_blocked, id=8293,
stack(0x00007f1db6903000,0x00007f1db693c000)]
0x00007f1da678f000 JavaThread "ActiveMQ BrokerService[MQMaster]
Task-1777" daemon [_thread_blocked, id=8292,
stack(0x00007f1db9dc8000,0x00007f1db9e01000)]
Please, can someone provide inputs on why this is happening.
Thanks
nl
