GitHub user navsan opened a pull request:
https://github.com/apache/incubator-quickstep/pull/28
Add option to enable Google Profiling.
[Thanks @hbdeshmukh for the pointers on how to do this.]
This PR makes profiling pretty easy. Steps to take:
* Install dependencies: Google Perftools must be installed already. This PR
doesn't use the third_party perftools.
* Build Quickstep with the ENABLE_GOOGLE_PROFILER flag turned on. You
probably want to use Build Type RelWithDebInfo.
* When running the CLI shell, pass the profiler_file_name flag to start
profiling starting from the second run of the query, and dump profile output to
the file name specified.
* Alternatively, set the environment variable CPUPROFILE to turn on
profiling for the entire run (including first run, preloading, foreman and
worker setup, etc.).
* Use `google-pprof --dot profile.prof > profile.dot` or something similar
to get a usable output.
Tested with flag turned on and off, with RelWithDebInfo, with Clang on
CloudLab machine. Dependencies were pre-installed using `sudo apt-get install
-y libgoogle-perftools-dev google-perftools`.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/apache/incubator-quickstep google_profiler
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/incubator-quickstep/pull/28.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #28
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commit 7acd6434ddf335dd8c1a4ded562f5c6643fb1382
Author: Navneet Potti <[email protected]>
Date: 2016-06-12T20:57:39Z
Add option to enable Google Profiling.
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