On 04/01/2014 04:02 PM, Binh Pham wrote: > Hi all, > Sorry if this is a basic question (I searched in the list and don’t seem to > find a hit). > Has anyone had experience with using libpfm for Java applications as all > examples in the perf_examples folder are in C? I would appreciate if someone > can give me some pointer about that. > > Another approach I am thinking of is using a system wide monitoring like > oprofile, and I went across pfmon but looks like it hasn’t been updated for > long, and the most recent kernel that it supports is 2.6.x, which is really > old. Hi, Binh, The oprofile project has included the "operf" tool since the August 2012 release. This tool is capable of profiling either system-wide or per-process, and has the Java JIT support you are apparently aware of already. If you build oprofile yourself, then getting the Java JIT support built and set up right does take a few extra steps (which are documented in Chapter 1, sections 5 and 7 of http://oprofile.sourceforge.net/doc/index.html). If the Linux distro you're running on is new enough to have oprofile 0.9.8 or newer, then it would be easier to install the distro-provided oprofile. Be aware that most distros have a separate package for installing the oprofile Java agent libraries, which are needed for the JIT support. Package names vary between distros, so just search for all packages related to oprofile.
If you have questions about oprofile, feel free to post them to the oprofile mailing list (https://lists.sourceforge.net/lists/listinfo/oprofile-list). -Maynard > > Thanks in advance for your help, > Binh > ------------------------------------------------------------------------------ > _______________________________________________ > perfmon2-devel mailing list > perfmon2-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/perfmon2-devel > ------------------------------------------------------------------------------ _______________________________________________ perfmon2-devel mailing list perfmon2-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/perfmon2-devel
