Its a pity because JMeter is such a fantastically good tool when it works, its just let down by performance issues. If you want to load test at anything like a high load with JMeter you need several high powered servers doing it in unision to spread the threads.
I was trying to use the GCJ compiler - which claims to compile java bytecode to machine code - to increase performance but I couldn't get it working, that could be a possible performance boost. My general rule of thumb is that for anything above 75 users JMeter/Java is too resource hungry to give accurate results on my hardware.
And now I'm trying high-loads, thats a problem. However, IBM have a nifty if hard to configure tool called 'stress'. It's written in C so it performs very well, just lacks a lot of JMeters great functionality. You can find it online if you serach for IBM Web Performance Tools.
Perhaps a port of JMeter to C++ should be considered? I know this would involve doing a lot of painfully boring networking and threading code but the performance gain would be huge.
Cheers, Duncan
Mark McWhinney wrote:
Hi all,
I am a long time LoadRunner user but am new to JMeter. I am impressed with its functionality. It is a lot closer to LoadRunner than many of us in the LoadRunner community realize.
I am going through the usual newbie issues but am actually reading the manual and figuring it out.
I ran a test with one thread group with 30 threads that had six HTTP requests with a 5 second wait time between each request. I maxed out the CPU at about 20 to 25 users on a 800 MHz Windows 2000 machine. Memory utilization was about 350 Mbytes. Is that typical? I am really going to need 10 machines to do a 250 user load test or am I missing something?
--------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
--------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
