Benjamin Otte
1bb6f9fb10
perf: Add yield and fix double comparison
...
- add a yield () function that's called before every test. It reduced the std
dev slightly for me
- fix double comparisons to not just compare the integer part
2006-09-05 22:36:56 -07:00
Carl Worth
2fa0228d63
Two big improvements to bring the std. deviation down to where we want it.
...
1. Remove all the alarm/signal code, which just isn't doing what we want for some reason.
Instead, for now we'll simply run for a fixed number of iterations, (perhaps we
can tune that per test later).
2. Before computing mean and stdandard deviation of runs, sort them all and discard the
top and bottom 20% of the values.
Now the standard deviation for the paint test is generally 2% or less.
2006-08-31 17:43:40 -07:00
Carl Worth
6ae6d91c0c
perf: Switch from alarm to setitimer for more fine-grained control of timers
2006-08-31 14:08:43 -07:00
Carl Worth
19a5b8b9b5
perf: Run for multiple iterations and print std. deviation
2006-08-31 13:22:17 -07:00
Carl Worth
689e9c446e
perf: Add indication of content to output
2006-08-31 12:34:21 -07:00
Carl Worth
7917e1201f
perf: Fix typo in backend blackballing so that image tests now run
2006-08-31 11:53:16 -07:00
Carl Worth
0c741675e1
Make perf interface return a rate. Start print target and test names.
2006-08-31 11:51:28 -07:00
Carl Worth
fd13e874a7
perf: Drop separate setup function from each test case.
...
We are already doing loop measurement internally, so each function
can already do any setup it needs without it affecting the measurement.
2006-08-31 11:42:51 -07:00
Carl Worth
7f6e901a23
perf: More simplification of PERF_LOOP macros.
...
Here we drop both the start_timing and stop_timing functions,
foliding their contents into main, PERF_LOOP_INIT and
PERF_LOOP_FINI.
2006-08-31 11:19:48 -07:00
Carl Worth
b9f629d542
perf: Don't require a separate counter from the timer for perf loops.
2006-08-31 11:02:20 -07:00
Carl Worth
13bcba68ae
perf: Collapse timing.[ch] down into cairo-perf.[ch]
2006-08-31 10:41:00 -07:00
Carl Worth
2c16aa6304
perf: Don't measure meta-surface-backed surface types.
2006-08-31 08:53:58 -07:00
Carl Worth
e153c55dff
perf: Add initial skeleton of performance monitoring suite
2006-08-31 07:19:05 -07:00
