Hi, everyone
Currently I'm using VTune analyzer in linux system to profiling java code.
I generated report by attaching it to the running process.
However, in top-down tree, I usually can see [Outside any known module] which took certain amount of time.
When I click it, I couldn't see any thing.
The strange thing is that sometime it can generate proper top-down report.
When vtune can generate proper report, trace file is usually about 500MB
On the other hands, when it can't generate, trace file is just about 5MB
There are plenty of opinion that it is because of "code on the fly".
So, I tried this steps after turning off the JIT option in jdk.
Ofcourse, I ran it under root.
But it doesn't work well.
My Ubutu version is 14.04.1 LTS
Please help me!!
Any kind of probable ideas may be helpful
Thanks