live.gnome.org

See also: MemoryReduction and GnomePerformance/Sleep

Mailing list

List page for performance-list@gnome.org

Concrete problems

• Login time is too long: Lorenzo Colitti's analysis

• /LoginTime - this is the master page for the login-time-reduction project

• Pango optimization work

• GTK+'s file chooser takes too long to start up: Federico Mena-Quintero's optimization work

• Nautilus takes too long to open a folder. FIXME: Alex has been working on this; point to his blog entry or the relevant mails.
• Evolution's mail composer takes too long to come up when you hit C-n
• Evolution takes too long to switch between components. Update: Cecilia González from the Women's Summer Outreach Program is looking into this.
• Panel menus take too long to come up when clicked.

• Gedit takes too long to start up (PaoloBorelli: the new_mdi branch starts up faster in my experience... numbers needed)

• Gnome-terminal takes too long to start up
• Applets take long to start up, and you can see one starting a while after the other.
• Tomboy startup time scales nonlinearly with the number of notes/links, or something like that (11 seconds on Federico's machine).
• GConf batched requests are not implemented. Update: Cody Russell is working on this.

• List of bugzilla bugs with the perf keyword

Ongoing work

• GtkCellRendererText measures PangoLayout more than needed

• Reducing the number of poll() wakeups: Ryan Lortie's project, How to debug Glib apps which do this.

• Fixed-point versions of GdkPixbuf scaling functions, for platforms like ARM which don't have hardware floating point

• Torture test and performance benchmark for GTK+ theme engines by Manu Cornet

• Cairo performance project

• Phillip Ezolt on profiling Nautilus startup for Summer of Code 2006

• Cecilia González on profiling Evolution component switching for Women's Summer Outreach Program 2006

Profiling Tools

sysprof

• Sysprof - a tool that helps in findind the functions in which a program uses most of its time

gprof

• gprof quickstart

exmap-console

• exmap-console website

OProfile

• Using OProfile

• OProfileUI

SystemTap

• Using SystemTap

• Using SystemTap for Gnome performance analysis

Cairo trace utility (cairo-perf-trace)

• http://cairographics.org/FAQ/#profiling

• Carl D. Wort blog entry

References

• Making GNOME fast by FedericoMenaQuintero

• Tracking changes in performance over various releases

• A new feature gets added, at some performance cost. When is this worth it?

• Dynamic Linux Kernel Instrumentation with SystemTap by EugeneTeo

Video Resources

• Profiling Desktop Applications by FedericoMenaQuintero (ogg video, 258MB, in english)

Extreme Slowness

• /ExtremeSlowness

CategoryOptimization