On Wednesday, 29 March 2006 00:53, Ben Hartshorne wrote: > can this probe get things like stats on the garbage collector (avg > time spent in GC, etc.)
Unfortunately no. :(
I did some research on how that would be possible and I come up with
two options:
- using JVMPI
- using a Java app running inside the same JVM and using
java.lang.Runtime.
the first options seams to have a big effect on performance (at least
according to some project that are using it [1, 2]). The latter choice
didn't give any interesting information: memory info and the ability to
trace instructions or methods. As far as I know tracing a application
has a big performance penalty, so it was not an option that I could
use.
If anyone knows a way to get this information from the JVM in a fast,
performance effective way I'll be really glad to hear it.
Miguel Tavares
[1] http://www.khelekore.org/jmp/performance.html
[2] http://oss.metaparadigm.com/jmemprof/
--
"Until they become conscious they will never rebel,
and until after they have rebelled they cannot become conscious."
- George Orwell's 1984 -
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