ok, thanks for this point, I do differents tests and inform the list. Regards, Nicolas Prochazka
2012/1/6 Marc-André Lureau <mlur...@redhat.com> > Hi > > ----- Mensaje original ----- > > - On my laptop, with decent processor ( sempron / graphics card is > > dri2 / drm capable) : > > - I can see video very well with spice-gtk > > - if I move a windows as firefox , it's it' really smoothly > > - cpu consumption : spice-gtk ~ 30% , X ~ 10% > > > > > > - On a thin client as wyse Z90 ( AMD G-T52R 1.5GHz Processor with AMD > > Radeon™ HD 6310 Graphics ) ( dri2/ drm ) > > http://www.wyse.com/products/hardware/thinclients/Z90/index.asp > > > > - if i move a windows as firefox is very bad , lag is important > > - If i see a video , it's very bad ( lag / bug jump ..) > > - cpu comsumption : spice-gtk ~ 75% , X ~ 25 > > ( cpu load is < 1 ) > > > > My question is : > > So it's seems spice-gtk is very hungry, > > how can optimize it ? > > So far, spice-gtk has not been optimized to run on thin-client. This was > not our primary goal, but we are certainly interested to improve in that > direction. There is a couple of things you can do to improve performance > already. Are you using spicy? In fullscreen? Do you have scaling enabled? > you should turn it off. Is your client resolution matching guest > resolution? You can enable the X11 shm backend in spice-gtk --with-x11 and > gtk2 that should speed things a little. Did you compile with ucontext > coroutine? All your libraries, in particular pixman, are compiled with host > optimization?.. > > Otoh, spicec is much lighter and a bit faster in some area (it's not using > Gtk/Cairo and prefer X11 shm). It would be interesting if you could run the > same tests with spicec and tell us the differences (cpu and video > performance etc..) > > Btw, what video are you playing in the guest, at which resolution / > framerate etc.. > > > - is it only libjpeg-turbo that do the big stuff so nothing to do ? > > For video, yes. But the update of video region is quite slow right now, we > may use video overlays in the future to speed up yuv->rgb, scaling, and > updating large surfaces. > > > - do you know which piece of code is so hungry ? > > Afaik, cpu time is all related to drawing, and blitting. X11 shm backend > should improve things (but you will lose some features you may not need on > thinclients) > > cheers >
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