Get Java Methods in Opreport

[Kiran p. <kd...@gm...>]

I'm trying to get oprofile to dump the methods that are taking the most time for
a java app.
I'm using hotspot 6u34 on a ubuntu.
I have the latest version of oprofile 

root@kpaul-wsl1:/home/kpaul/oprofile/oprofile/opjitconv# opcontrol --version
opcontrol: oprofile 0.9.9git compiled on Sep 17 2012 17:11:58

Here is the setup:
root@kpaul-wsl1:/home/kpaul/oprofile/oprofile/opjitconv# opcontrol --status
Daemon not running
Session-dir: /var/lib/oprofile
Event 0: CPU_CLK_UNHALTED:1000000:0:1:1
Separate options: library kernel thread
vmlinux file: none
Image filter: none
Call-graph depth: 0

I'm using operf to attach to my java process, I run some load on it and then I
kill operf. A considerable numbers of samples are lost but I'm hoping that not
the cause of me not seeing any java methods.

I'm hooking it up to java using JAVA_TOOL_OPTIONS and I'm also passing this
option -XX:+UseOprofile (apparently this is something that was written in 05
according to the comments and is supposed to help oprofile map nmethods to
memory spaces and times, i dont see any mention of it anywhere but the code did
look promising if Oprofile uses it)


When I run opreport -lr I get something like this (this particular report is an
older one, when I enable +UseOprofile, I also get some random vm_* things in the
report)
14190     1.3096  libjvm.so               
instanceKlass::oop_adjust_pointers(oopDesc*)
14584     1.3459  libjvm.so                GenericTaskQueue<StarTask,
131072u>::pop_local(StarTask&)
14847     1.3702  libjvm.so               
instanceKlass::oop_follow_contents(oopDesc*)
15702     1.4491  libzip.so                ZIP_GetEntry
15905     1.4679  libc-2.11.1.so           /lib/libc-2.11.1.so
17686     1.6322  libjvm.so               
instanceKlass::oop_push_contents(PSPromotionManager*, oopDesc*)
25000     2.3072  anon (tgid:18481 range:0x7f71435a7000-0x7f7146116fff) anon
(tgid:18481 range:0x7f71435a7000-0x7f7146116fff)
34641     3.1970  libjvm.so                void
PSPromotionManager::claim_or_forward_internal_depth<unsigned int>(unsigned int*)
34756     3.2076  libjvm.so                SpinPause
52203     4.8178  libjvm.so               
PSPromotionManager::copy_to_survivor_space(oopDesc*)
75642     6.9809  libjvm.so                StringTable::lookup(int, unsigned
short*, int, unsigned int)
130961   12.0863  no-vmlinux               /no-vmlinux
296237   27.3395  anon (tgid:18481 range:0x7f71435a7000-0x7f7146136fff) anon
(tgid:18481 range:0x7f71435a7000-0x7f7146136fff)

What I would want is getting the actual java methods that anon refers to,
Looking at the example on the oprofile website, it seems like that should happen
but unfortunately, its not happening for me.

I checked the jitdump folder and I have a lot of files there.
If i do "strings xxxxxx.dump" then I do get a lot of java methods. I'm just not
sure why I dont get any *.java things from opreport.