Commit Graph

3 Commits

Author SHA1 Message Date
Owen W. Taylor
20d579e7d8 Add units to metrics definitions
Switch from having separate METRICS and METRIC_DESCRIPTIONS objects
in a perf module to a single METRICS array. This is done so the
perf module can define the units for each metric.

In addition to improving the output in the web interface, the purpose
of having units is to give some clue about how to pick from multiple
values from different runs. In particular, with the assumption that
"noise" on the system will increase run times, for time values we want
to pick the smallest values, while for "rate" values, we want to pick
the largest value.

https://bugzilla.gnome.org/show_bug.cgi?id=618189
2010-05-21 00:18:45 -04:00
Owen W. Taylor
08b8b39a5d Add simple malloc statistics and metrics
Add some basic statistics for allocated memory based on mallinfo(),
and use that to define two metrics:

 usedAfterOverview: bytes used after the overview is shown once
 leakedAfterOverview: additional bytes used when the overview is
   shown a second time.

https://bugzilla.gnome.org/show_bug.cgi?id=618189
2010-05-21 00:18:45 -04:00
Owen W. Taylor
98c2247c1b Add a facility for automated performance measurement
We want to be able to summarize the behavior of the shell's
performance in a series of "metrics", like the latency between
clicking on the Activities button and seeing a response.

This patch adds the ability to create a script under perf/
in a special format that automates a series of actions in the
shell, writing events to the performance log, then collects
statistics as the log as replayed and turns them into a set
of metrics.

The script is then executed by running as gnome-shell
--perf=<script>.

The 'core' script which is added here will be the primary
performance measurement script that we use for shell performance
regression testing; right now it has a couple of placeholder
metrics.

https://bugzilla.gnome.org/show_bug.cgi?id=618189
2010-05-20 23:41:47 -04:00