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Monthly Archives: August 2009

Just an update incorporating suggestions into the presentation of the graphs – the principal change being to trim outliers from the relative performance graph. Let me know what you think.
cairo-perf-chart-absolute
cairo-perf-chart-relative

[graphs uploaded outside of wordpess to avoid rescaling]

As nobody appreciated the relative factors as a performance metric, here are the absolute times for tiny.
cairo-perf-chart
cairo-perf-chart-relative

image xlib xvfb gl drm
evolution 69.9 74.8 186.4 146.3 103.6
firefox-planet-gnome 217.5 170.8 295.1 359.9 100.1
firefox-talos-gfx 342.1 193.5 305.1 645.3 48.9
firefox-talos-svg 375.3 684.8 621.1 709.7 876.1
gnome-system-monitor 39.6 149.6 64.5 348.8 19.3
gvim 167.8 90.5 295.9 262.0 148.9
poppler 41.5 69.8 50.4 138.9 14.4
swfdec-giant-steps 20.7 25.2 28.1 54.7 13.3
swfdec-youtube 41.3 39.5 52.4 46.0 11.8
vim 97.5 115.6 93.9 160.3 20.8

Times are in seconds.

[image] 1.9.2-564-g1b24626.image.tiny
[xlib] 1.9.2-564-g1b24626.xlib.tiny
[xvfb] 1.9.2-564-g1b24626.xvfb.tiny
[gl] 1.9.2-564-g1b24626.gl.tiny
[drm] 1.9.2-564-g1b24626.drm.tiny

My first hands-on with an i965. Running from a live image as I haven’t got a spare hard-drive to dual-boot yet. Aside from that and that cairo-drm on an i965 is completely unaccelerated (so the overhead of this backend is entirely down to buffer management). Caveat lector.
cairo-perf-chart

image drm xlib
evolution 0.0 -497.9 -594.1
firefox-planet-gnome 0.0 -157.0 -98.7
firefox-talos-gfx 0.0 -6.1 -139.7
firefox-talos-svg 0.0 -12.0 -105.4
gnome-system-monitor 0.0 -7.9 -9.4
gnome-terminal-vim 0.0 -11.2 -579.6
gvim 0.0 -658.0 -583.7
poppler 0.0 -0.2 -579.0
swfdec-giant-steps 0.0 -13.1 -169.3
swfdec-youtube 0.0 -4.5 -39.1

[image] 1.9.2-457-g3bc00af.image.karmic-alpha4
[drm] 1.9.2-457-g3bc00af.drm.karmic-alpha4
[xlib] 1.9.2-457-g3bc00af.xlib.karmic-alpha4

Hmm, I think there is room for improvement here.

Or, “why we don’t use glitz anymore”. Adding a cairo-glitz run on tiny (an i915):
cairo-perf-chart

image xlib drm gl glitz
epiphany-20090810 0.0 -106.5 -19.8 -235.8 -741.1
evolution-20090607 0.0 -100.3 -130.6 -440.6 -4150.4
evolution-20090618 0.0 -61.9 -69.4 -380.3
firefox-20090601 0.0 -103.5
firefox-periodic-table 0.0 -92.3 20.6 -228.6 -927.3
firefox-talos-gfx-20090702 0.0 8.3 381.6 -207.1 -230.5
firefox-world-map 0.0 -186.2 27.0 -51.1 -259.6
gnome-terminal-20090601 0.0 -29.7 207.9 -287.3 -262.0
gnome-terminal-20090728 0.0 60.0 406.7 -70.5 -129.4
poppler-20090811 0.0 -70.2 132.4 -344.2 -322.4
poppler-bug-12266 0.0 -101.6 59.0 -146.5
swfdec-fill-rate 0.0 -112.9 36.3 30.1
swfdec-fill-rate-2xaa 0.0 -69.3 345.1 45.7 -5498.1
swfdec-fill-rate-4xaa 0.0 -244.4 0.6 -3.2
swfdec-giant-steps 0.0 -41.7 -66.6 -260.8 -275.6
swfdec-youtube 0.0 12.1 192.9 7.6 -81.4

[image] 1.9.2-505-g2e9cad3.tiny
[xlib] 1.9.2-505-g2e9cad3.xlib.tiny
[drm] 1.9.2-525-g8c7de80.drm.tiny
[gl] 1.9.2-525-g8c7de80.gl.tiny
[glitz] 1.9.2-564-g1b24626.glitz.tiny

And some performance results for a really old machine, this must be almost 5 years old. ;-)
cairo-perf-chart

image xlib
evolution 0.0 -179.1
firefox-planet-gnome 0.0 -67.9
firefox-talos-gfx 0.0 9.1
firefox-talos-svg 0.0 -376.1
gnome-system-monitor 0.0 -112.3
gvim 0.0 140.1
poppler 0.0 -84.3
swfdec-giant-steps 0.0 -151.3
swfdec-youtube 0.0 -88.6
vim 0.0 -12.1

[image] 1.9.2-560-g221285f.image.inspired
[xlib] 1.9.2-560-g221285f.xlib.inspired

Another snapshot of performance this time from minime (a G4 mini-mac with a Radeon 200 GPU):
cairo-perf-chart

image xlib gl
epiphany-20090810 0.0 -94.1 -1777.1
evolution-20090607 0.0 -704.5 -4270.2
evolution-20090618 0.0 -146.2 -3470.6
firefox-20090601 0.0 -142.3 -1326.4
firefox-periodic-table 0.0 -26.2 -819.2
firefox-talos-gfx-20090702 0.0 32.7 -358.7
firefox-talos-svg-20090702 0.0 -49.7 -280.5
firefox-world-map 0.0 -107.9 -1138.3
gnome-terminal-20090601 0.0 20.9 -1374.8
gnome-terminal-20090728 0.0 39.8 -1941.1
poppler-20090811 0.0 -10.7 -1192.6
poppler-bug-12266 0.0 -30.3 -416.5
swfdec-fill-rate 0.0 -50.2 -843.3
swfdec-fill-rate-2xaa 0.0 -45.7 -1569.2
swfdec-fill-rate-4xaa 0.0 -84.0 -1724.1
swfdec-giant-steps 0.0 -18.3 -3232.6
swfdec-youtube 0.0 -14.0 -1100.5

[image] 1.9.2-507-g0136989.image.minime
[xlib] 1.9.2-507-g0136989.xlib.minime
[gl] 1.9.2-507-g0136989.gl.minime

Oh dear, the performance is truly dire.

This time comparing different backends using the ‘fast’ wip/stroke-to-path branch:
cairo-perf-chart

image xlib drm gl
epiphany-20090810 0.0 -106.5 -19.8 -235.8
evolution-20090607 0.0 -100.3 -130.6 -440.6
evolution-20090618 0.0 -61.9 -69.4 -380.3
firefox-20090601 0.0 -103.5
firefox-periodic-table 0.0 -92.3 20.6 -228.6
firefox-talos-gfx-20090702 0.0 8.3 381.6 -207.1
firefox-world-map 0.0 -186.2 27.0 -51.1
gnome-terminal-20090601 0.0 -29.7 207.9 -287.3
gnome-terminal-20090728 0.0 60.0 406.7 -70.5
poppler-20090811 0.0 -70.2 132.4 -344.2
poppler-bug-12266 0.0 -101.6 59.0
swfdec-fill-rate 0.0 -112.9 36.3 30.1
swfdec-fill-rate-2xaa 0.0 -69.3 345.1 45.7
swfdec-fill-rate-4xaa 0.0 -244.4 0.6 -3.2
swfdec-giant-steps 0.0 -41.7 -66.6 -260.8
swfdec-youtube 0.0 12.1 192.9 7.6

[image] 1.9.2-505-g2e9cad3.tiny
[xlib] 1.9.2-505-g2e9cad3.xlib.tiny
[drm] 1.9.2-525-g8c7de80.drm.tiny
[gl] 1.9.2-525-g8c7de80.gl.tiny

As always there is more work to do.

This time I’m comparing the performance of cairo-xlib using the latest intel-gfx drivers for i915. The big news here is that the use of server-side gradients causes a performance regression as opposed to their presumed benefits. In contrast tot the previous table, this show performance as a percentage speedup relative to the first result (in this case normally 1.8.8). This makes the regressions much clearer.

cairo-perf-chart

epiphany-20090810 0.0 5.5 -18.4
evolution-20090607 0.0 6.3 4.6
evolution-20090618 0.0 4.0
firefox-20090601 0.0 1.6 -21.5
firefox-periodic-table 0.0 -15.9 -12.6
firefox-talos-gfx-20090702 0.0 1.8 0.3
firefox-world-map 0.0 3.6 16.5
gnome-terminal-20090601 0.0 7.0 7.2
gnome-terminal-20090728 0.0 2.1 0.3
poppler-20090811 0.0 1.5 1.6
poppler-bug-12266 0.0 -0.9 1256.8
swfdec-fill-rate 0.0 -0.4 0.9
swfdec-fill-rate-2xaa 0.0 -0.1 11.1
swfdec-fill-rate-4xaa 0.0 -1.3 3.3
swfdec-giant-steps 0.0 7.8 11.3
swfdec-youtube 0.0 -3.5 -15.3

[0] 1.8.8.xlib.tiny
[1] 1.9.2.xlib.tiny
[2] 1.9.2-505-g2e9cad3.xlib.tiny

Performance comparision of cairo-image from 1.8.8 to current on a slow netbook:
performance-1.8.8..

epiphany-20090810 1.00 1.02 1.48
evolution-20090607 1.02 1.00 4.33
evolution-20090618 1.00 1.02 2.15
firefox-20090601 1.00 1.02 1.83
firefox-periodic-table 1.19 1.00 1.86
firefox-talos-gfx-20090702 1.12 1.00 1.65
firefox-world-map 1.00 2.51 2.27
gnome-terminal-20090601 1.01 1.00 1.27
gnome-terminal-20090728 1.09 1.00 1.45
poppler-20090811 1.00 1.00 1.09
poppler-bug-12266 1.32 1.00 13.16
swfdec-fill-rate 1.00 1.03 1.09
swfdec-fill-rate-2xaa 1.00 1.00 1.15
swfdec-fill-rate-4xaa 1.00 1.00 1.16
swfdec-giant-steps 1.00 1.23 1.31
swfdec-youtube 1.00 1.00 1.14

[0] 1.8.8.tiny, image
[1] 1.9.2.tiny, image
[2] 1.9.2-505-g2e9cad3.tiny, image

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