Performance:Tools/oprofile
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Profiling Firefox or Fennec with oprofile
oprofile is a useful profiling tool for Linux. Using it does not require recompiling in many cases, which is nice.
- You may need to compile with
ac_add_options --enable-optimize="-O0 -fno-omit-frame-pointer"
in order to get callgraph data properly.
- You can then follow the following workflow:
sudo opcontrol --reset sudo opcontrol --no-vmlinux sudo opcontrol --start --callgraph=10 [... do stuff ...] sudo opcontrol --shutdown opreport --demangle=smart --symbols --callgraph ./fennec `ls *.so` &> o ; gedit o
Notes
- Callgraph data may not work on x86_64, sadly.