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List:       oprofile-list
Subject:    Re: JIT_SUPPORT: Merge patch to put the complete JIT support stuff
From:       Daniel Hansel <daniel.hansel () linux ! vnet ! ibm ! com>
Date:       2008-05-05 12:12:42
Message-ID: 481EF9BA.9080507 () linux ! vnet ! ibm ! com
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Gisle Dankel wrote:
> Daniel,
> 
> did you include the patch for reading names of anon regions out
> of /proc/<pid>/maps ?
If you mean the patch you posted (extending the if-condition) ... yes, i 
did.

Kind regards,
Daniel
> 
> Cheers,
> Gisle
> 
> On Mon, 2008-04-28 at 18:42 +0200, Daniel Hansel wrote:
> > Hi,
> > 
> > finally we have fixed that 64bit issue that Gisle Dankel has mentioned 
> > (and patched) before.
> > 
> > Please review my patch and give comments.
> > 
> > Kind regards,
> > Daniel
> > 
> > John Levon wrote:
> > > On Mon, Apr 28, 2008 at 03:02:13AM +0200, Daniel Hansel wrote:
> > > 
> > > > Please review my new patch and give comments.
> > > So I tried it out, but it doesn't work for me. I ran:
> > > 
> > > public class HelloWorld {
> > > public static void main(String [] args) {
> > > for (;;)
> > > sayHelloWorld();
> > > }
> > > 
> > > public static void sayHelloWorld() {
> > > System.out.println("hello\n");
> > > }
> > > };
> > > 
> > > plus some of the Swing demos like this:
> > > 
> > > java -agentpath:/usr/local/oprofile-jit/lib/oprofile/libjvmti_oprofile.so.0.0.0 \
> > > HelloWorld >/dev/null 
> > > I get a jitdump file:
> > > 
> > > # ls -lrt /var/lib/oprofile/jitdump/
> > > total 440
> > > -rw------- 1 moz moz 441616 2008-04-28 03:47 27111.dump
> > > 
> > > But the output has nothing:
> > > 
> > > # opreport -l | more
> > > ...
> > > warning: [vdso] (tgid:14265 range:0x7fff56bfd000-0x7fff56bff000) could not be \
> > >                 found.
> > > ...
> > > 	- this isn't a JIT thing, but when did these start turning up?
> > > 	  Yuck - needs fixing.
> > > ...
> > > CPU: AMD64 processors, speed 2002.55 MHz (estimated)
> > > Counted CPU_CLK_UNHALTED events (Cycles outside of halt state) with a unit mask \
> > > of 0x00 (No unit mask) count 100000 samples  %        image name               \
> > > app name symbol name 324908   33.5486  no-vmlinux               no-vmlinux \
> > > /no-vmlinux 273758   28.2670  anon (tgid:27111 \
> > > range:0x2aaaac005000-0x2aaaac276000) java                     anon (tgid:27111 \
> > > range:0x2aaaac005000-0x2aaaac276000) 
> > > 
> > > No Java symbols are listed at all, just the anonymous region.
> > > Am I doing something wrong?
> > > 
> > > Using the Sun Java 1.6 JDK.
> > > 
> > > regards
> > > john
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