Hi, as some of you may be aware, I've recently had fun poking at the Gtk theme torturer. This last weekend it became a bit more obsessive. My heavily hacked repository is now available at git://people.freedesktop.org/~company/git/gtk-theme-torturer
Examples of what you can do with it are here: http://www.freedesktop.org/~company/stuff/cairo-benchmark-themes.png and unless Benjamin deleted it already, here: http://benjamin.sipsolutions.net/theme-perf/ The code requires libgda 1.2, since it stuffs all the results into an sql database for easier processing. What do you need to know, if you wanna play with it? 1) There's a script named test_themes, that tests all the installed themes, collects the data and puts it into the default database. 2) The default database is an SQLite database named results.sql. To start over, simply delete that file. 3) You can look at that file with your favourite database tool or ... 4) You can use the create-image tool to create those funky screenshots seen above. create-image needs some introduction. You call it like this: ./create-image -p $PRIMARY [-s $SECONDARY] [LIMITING-OPTIONS] out.png It will then proceed to create the file out.png printing on the left side the column you set as $PRIMARY and using as the header the column you set as $SECONDARY. If you have set any LIMITING-OPTIONS, the generated image will be limited to those results. Still confused? Some examples: http://www.freedesktop.org/~company/stuff/cairo-benchmark-themes.png was created like this: create-image -p theme -s test http://benjamin.sipsolutions.net/theme-perf/Redmond.png create-image -p engines-version -s test --theme=Redmond http://benjamin.sipsolutions.net/theme-perf/tests/vscrollbar-slider-big.png create-image -p engines-version -s theme --test=vscrollbar-slider-big If there's any questions about this, don't hesitate to ask :) So what did we learn from running all these weird tests? First of all, I am pretty sure that the current way of profilingprovides reliable results. The values keep pretty much the same every time someone runs the test and the tests pretty much match the expectations. Second, we've found lots of nasty things in the theme engines. ;) And last but not least, cairo really is slow for non-trivial drawing operations. They seem to be - as a rough first guess - 5 times slower than they were before. See http://benjamin.sipsolutions.net/theme-perf/tests/vscrollbar-slider-big.png and compare the "none" values (that is gtk-engines 2.6 where no engine used cairo) to the "2.7.7" values (which is current CVS, where most engines use cairo). On the good side, cairo is able to draw a single-color grey rectangle pretty much as fast as raw X. :) Benjamin _______________________________________________ Performance-list mailing list [email protected] http://mail.gnome.org/mailman/listinfo/performance-list
