[fedora-java] Oprofiling Eclipse CVS checkout
Andrew Haley
aph at redhat.com
Fri May 6 14:49:38 UTC 2005
Andrew Overholt writes:
> Hi,
>
> I'm trying to track down the cause of [1], so it was suggested to me that I
> run oprofile and see what's going on. I've done so and attached the
> output. I don't really know what I'm supposed to be seeing in this, so if
> someone who knows more could help me out, I'd really appreciate it.
>
> What I did:
>
> 1. sudo opcontrol --reset
> 2. sudo opcontrol --start --no-vmlinux
> 3. started eclipse and tried to check out GNU-Crypto [2]
>
> While this was going, I checked on gnu-crypto on the command line (on a
> different machine .. it's the same if I do it on the same machine as the
> one running Eclipse). The command line checkout started when the
> Eclipse checkout was about 20% or 30% completed and finished before the
> Eclipse checkout made it to 40% (these percentages are just rough
> estimates based upon the progress bars).
>
> 4. stopped the Eclipse checkout while it was still less than 50% completed
> and cleanly exited Eclipse
> 5. sudo opcontrol --stop
> 6. sudo opreport image-exclude:/no-vmlinux
You need the syms. opreport -l.
But I can tell imediately from the
> 8530 18.2055 libgcc_s-4.0.0-20050428.so.1
what is wrong. You're throwning and catching millions of exceptions.
Andrew.
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