[ubuntu-art] Fwd: Human theme benchmarked
gthompson at cogeco.ca
Wed Aug 2 18:50:18 BST 2006
Chuck Huber wrote:
> I have also done some performance testing on many of the gtk themes and
> engines found in Dapper. One surprise was that non cairo clearlooks was
> a hair faster than the smooth based engines.
> On the wiki page below I posted a deb of gtkperf_0.40 which sounds
> similar to what Manu was using to do his tests. Gives output in
> realtime and I posted a pdf of my most recent batch of testing. 5
> scores for each theme and an average below.
> On Wed, 2006-08-02 at 10:02 -0400, Viper550 wrote:
>> I decided to forward this pretty informing post I got on ubuntu-devel
>> this morning, Manu actually made a torture test for GTK themes and
>> Engines, and the results are pretty surprising. If you are concerned
>> about the speed of our Ubuntulooks engine, you might wanna check it out.
>> I am also trying to get him to test out Tropic; which uses the Murrine
>> engine, as Murrine is claimed to be the fastest Cairo based GTK engine ever.
>> -------- Original Message --------
>> Subject: Human theme benchmarked
>> Date: Wed, 02 Aug 2006 15:41:41 +0200
>> From: Manu Cornet <lmanul at ubuntu.com>
>> To: ubuntu-devel at lists.ubuntu.com
>> CC: Federico Mena Quintero <federico at novell.com>
>> Hi all!
>> I have been coding a small "torture" application for GTK themes ,
>> which mainly does two things: 1) crash test the engine by calling all
>> the GTK paint functions with unsual parameters and 2) measure the time
>> the theme takes to create/map/expose/resize/destroy widgets (with help
>> from Federico's widget profiler's infrastructure).
>> While this was mainly made for the OLPC theme (work in progress), I
>> thought you might be interested by how the Human theme performs with
>> this benchmark. There aren't any real surprises, but you might find this
>> report useful anyway.
>> The full report is available as a spreadsheet . Before writing a
>> short analysis, a few disclaimers:
>> * I tried my best to make the testing conditions as stable as possible:
>> same computer (of course), same programs running in the background,
>> tests performed within a small time window, etc.
>> * The different time measures correspond to the few important events in
>> a widget's life: create, map, expose, destroy. The "expose with resize"
>> corresponds to resizing the widget a lot of times (from a very small
>> size to a very big size) and measuring the expose time for each size.
>> * Each cell of the document is an amount of time (in seconds) averaged
>> from about 80 iterations of the same event, on the same type of widget.
>> * Absolute time values aren't that useful, but ratios are more
>> Okay, so a few observations:
>> * Create: pretty much the same for all themes, within each type of
>> widget (ratios ~ 1).
>> * Mapping a widget is always a bit slower for Human than for Clearlooks
>> (average ratio of 1.37, all values being close to this average).
>> * Destroy is always slightly (about 30 %) faster on Human than on
>> Clearlooks, but still slower than HighContrast. Destroy time are pretty
>> much the same between OLPC and Human.
>> * Expose is between 2 and 3 times slower with Human than with
>> Clearlooks, and also slower than the OLPC theme.
>> * Expose with resize is the most CPU-consuming task, and therefore
>> probably yields the most significant results. Human is twice slower than
>> Clearlooks (but still 35 times faster than OLPC -- OLPC definitely has a
>> problem with resizing right now). Here, the details are interesting:
>> Human is just a little slower than Clearlooks on most widget types (1.1
>> or 1.2 ratios), but much slower on some particular ones: GtkProgressBar
>> (5.5 times slower), GtkButton (5.5 as well), GtkNotebook (2). I'm not
>> very familiar with the Human theme's code, but these appear to be the
>> widgets that differ the most (visually -- glossy look) from Clearlooks,
>> so it probably won't be a surprise that they take more time to draw
>> (although 5 might be a big higher than expected).
>> Hope this was useful :)
>>  http://www.manucornet.net/pub/Themes_performance.ods
>> ubuntu-devel mailing list
>> ubuntu-devel at lists.ubuntu.com
Interesting finding, think you could test the Murrine engine as well?
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