Hi -
Can someone point me to documentation on the maximum number of threads a
single JMeter instance can handle? (I cannot find this information on
Google or the wiki.)
I have a problem with a testcase that has a large number of threads - it
has 2 thread groups with 2000 and 5000 threads each. On a Windows XP SP2
system with 2GB of RAM, java.exe grows to about 350MB before throwing
this exception:
-------------------------
Exception in thread "Thread-1" java.lang.OutOfMemoryError: unable to
create new native thread
at java.lang.Thread.start0(Native Method)
at java.lang.Thread.start(Thread.java:574)
at
org.apache.jmeter.engine.StandardJMeterEngine.run(StandardJMeterEngine.j
ava:387)
at java.lang.Thread.run(Thread.java:595)
-------------------------
The JMeter version is 2.1.1 and the Java version is "1.5.0_10"
-------------------------
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_10-b03)
Java HotSpot(TM) Client VM (build 1.5.0_10-b03, mixed mode)
-------------------------
I tried tweaking two JMeter run script settings: HEAP and NEW. I started
small, and increased the numbers proportionally up until Xmx=1024m but
it was little use - the more I increased HEAP size, the faster I got the
outOfMemory errors.
I also came across some interesting information here about the maximum
number of threads per process:
http://blogs.msdn.com/oldnewthing/archive/2005/07/29/444912.aspx
I tried using '-Xss128k' to reduce stack size per Java thread, but that
did not help either.
Kind regards,
Sonam Chauhan
--
Corporate Express Australia Ltd.
Phone: +61-2-93350725, Email: [EMAIL PROTECTED]
