Re: Scrolling performance

["Clemens Eisserer" <linuxhippy gmail com>]

Hello again,

Thanks a lot for sending your results of the 6200.

It seems that (on my system) 35% of total cpu time are spent in
software rendering related stuff (I guess _nv000805X is some kind of
vram readback or upload function).
When running gftp with the open-source "nv" driver performance feels
way better (but not as ligthening fast as qt) as log as not-AA'ed
fonts are used.

So by identifying these problematic areas someone could send nvidia an
bug-report for the missing XRender hookups/implementations. But I
don't have any clue howto identify these :-/
Does anybody know a good technique/tools for finding out which calls
to X are slow?
Does running gftp in sync mode with some x protocoll analyzer make sence?

Thank you in advance, lg Clemens


2006/6/21, John Cupitt <jcupitt gmail com>:
> Good, glad that helped. There are fast and attractive gtk2 themes as
> well: I use clearlooks myself.
>
> For what it's worth, if I maximise gftp and wiggle the vertical
> splitter I see rather similar numbers to you. I have an nvidia 6200
> with driver 1.0-8762 and gtk2.8.18.
>
>    379387 69.5894 Xorg
>         CPU_CLK_UNHALT...|
>           samples|      %|
>         ------------------
>            143932 37.9380 libfb.so
>            101881 26.8541 no-vmlinux
>             98804 26.0431 anon (tgid:4610 range:0x82c000-0x922000)
>             26745  7.0495 Xorg
>              6181  1.6292 libc-2.3.6.so
>              1685  0.4441 libextmod.so
>               116  0.0306 mouse_drv.so
>                42  0.0111 libramdac.so
>                 1 2.6e-04 libm-2.3.6.so
>    125293 22.9820 gftp-gtk
>         CPU_CLK_UNHALT...|
>           samples|      %|
>         ------------------
>             20136 16.0711 libpangoft2-1.0.so.0.1201.2
>             16493 13.1635 libcairo.so.2.2.4
>             15452 12.3327 libgobject-2.0.so.0.1000.3
>             13860 11.0621 libpango-1.0.so.0.1201.2
>             12485  9.9646 libc-2.3.6.so
>             12299  9.8162 libgdk-x11-2.0.so.0.800.18
>             11823  9.4363 libglib-2.0.so.0.1000.3
>              4191  3.3450 libgtk-x11-2.0.so.0.800.18
>              4190  3.3442 libX11.so.6.2.0
>              2946  2.3513 libpthread-2.3.6.so
>              2517  2.0089 no-vmlinux
>              2171  1.7327 libpangocairo-1.0.so.0.1201.2
>              2087  1.6657 libXrender.so.1.3.0
>              1887  1.5061 libm-2.3.6.so
>              1084  0.8652 libfreetype.so.6.3.8
>               956  0.7630 libclearlooks.so
>               352  0.2809 pango-basic-fc.so
>               323  0.2578 libgthread-2.0.so.0.1000.3
>                30  0.0239 libgdk_pixbuf-2.0.so.0.800.18
>                 8  0.0064 ld-2.3.6.so
>                 3  0.0024 gftp-gtk
>
> John
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