Hi,
Le 05/11/2010 11:21, Holger Freyther a écrit :
1.) record a trace (e.g. the qtdemo) you will need Qt/X11 for that (desktop,
device). But make sure that the qtdemo width/height fits on the screen.
$ qttdemo -graphicssystem trace (exit the app normally)
2.) Use qttracereply to replay the trace, it will print nice FPS data.
here are the results :
Distro : angstrom-2010.x
CPU : i.MX357
Kernel : Linux 2.6.36+patches
trace generated using example concentriccirles (from qt4.7 X11 32bits sdk),
screen resolution : 320x240 :
concentriccircles -geometry 320x240 -graphicssystem trace
bench :
mount -o remount,ro /
qttracereplay ./qtgraphics-106954754.trace -qws (run 5 times)
=> qt4.7 with armv6 arch :
# qttracereplay ./qtgraphics-106954754.trace -qws
Read paint buffer version 1 with 282 frames
./qtgraphics-106954754.trace, iterations: 3, frames: 282, min(ms): 7403,
median(ms): 7405, stddev: 0.012733 %, max(fps): 38.092665
./qtgraphics-106954754.trace, iterations: 3, frames: 282, min(ms): 7375,
median(ms): 7376, stddev: 0.011070 %, max(fps): 38.237288
./qtgraphics-106954754.trace, iterations: 3, frames: 282, min(ms): 7370,
median(ms): 7371, stddev: 0.016920 %, max(fps): 38.263229
./qtgraphics-106954754.trace, iterations: 3, frames: 282, min(ms): 7388,
median(ms): 7389, stddev: 0.011050 %, max(fps): 38.170005
./qtgraphics-106954754.trace, iterations: 3, frames: 282, min(ms): 7372,
median(ms): 7373, stddev: 0.016915 %, max(fps): 38.252849
=> qt4.7 with arm arch :
# qttracereplay ./qtgraphics-106954754.trace -qws
Read paint buffer version 1 with 282 frames
./qtgraphics-106954754.trace, iterations: 3, frames: 282, min(ms): 7435,
median(ms): 7436, stddev: 0.010980 %, max(fps): 37.928716
./qtgraphics-106954754.trace, iterations: 3, frames: 282, min(ms): 7431,
median(ms): 7434, stddev: 0.022866 %, max(fps): 37.949132
./qtgraphics-106954754.trace, iterations: 3, frames: 282, min(ms): 7456,
median(ms): 7457, stddev: 0.010949 %, max(fps): 37.821888
./qtgraphics-106954754.trace, iterations: 3, frames: 282, min(ms): 7423,
median(ms): 7424, stddev: 0.010998 %, max(fps): 37.990031
./qtgraphics-106954754.trace, iterations: 3, frames: 282, min(ms): 7417,
median(ms): 7417, stddev: 0.050828 %, max(fps): 38.020763
Conclusion : no regression, nearly no improvement.
Eric
_______________________________________________
Openembedded-devel mailing list
[email protected]
http://lists.linuxtogo.org/cgi-bin/mailman/listinfo/openembedded-devel
