commit | 5fd34268b55307c8c6e0a707bea0466f5b12a46d | [log] [tgz] |
---|---|---|
author | vlankhaar <vlankhaar@google.com> | Fri Oct 13 13:44:41 2017 -0700 |
committer | lannadorai <lannadorai@gmail.com> | Mon Oct 16 13:36:55 2017 -0700 |
tree | af60c74baf3ca0acc62d720fd1df36d16a2013a4 | |
parent | 31b0c7a3a8ccb8749042a47d26582d59c9e51851 [diff] |
Correctly extract execution mode when more 'misc' bits are set. A sample event may have misc bits set other than the CPU mode. For example, when collecting precise events, PERF_RECORD_MISC_EXACT_IP is set. PiperOrigin-RevId: 172140181
The perf_to_profile
binary can be used to turn a perf.data file, which is generated by the linux profiler, perf, into a profile.proto file which can be visualized using the tool pprof.
For details on pprof, see https://github.com/google/pprof
THIS IS NOT AN OFFICIAL GOOGLE PRODUCT
To install all dependences and build the binary, run the following commands. These were tested on Debian GNU/Linux 8 (jessie):
sudo apt-get -y install autoconf automake g++ git libelf-dev libssl-dev libtool make pkg-config git clone --recursive https://github.com/google/perf_data_converter.git cd perf_data_converter make perf_to_profile
If you already have protocol buffers and googletest installed on your system, you can compile using your local packages with the following commands:
sudo apt-get -y install autoconf automake g++ git libelf-dev libssl-dev libtool make pkg-config git clone https://github.com/google/perf_data_converter.git cd perf_data_converter make perf_to_profile
Place the perf_to_profile binary in a place accessible from your path (eg /usr/local/bin).
There are a small number of tests that verify the basic functionality. To run these, after successful compilation, run:
make check
Profile a command using perf, for example:
perf record /bin/ls
The example command will generate a profile named perf.data, you should convert this into a profile.proto then visualize it using pprof:
perf_to_profile perf.data profile.pb pprof -web profile.pb
Recent versions of pprof will automatically invoke perf_to_profile
:
pprof -web perf.data