On Sun, Jan 22, 2012 at 11:03:47PM +0200, Alon Levy wrote: > On Sun, Jan 22, 2012 at 06:33:59PM +0100, Dominique Rodrigues wrote: > > > > Le 22/01/2012 18:28, Alon Levy a écrit : > > >On Sun, Jan 22, 2012 at 05:15:42PM +0200, Alon Levy wrote: > > >>On Sun, Jan 22, 2012 at 03:53:40PM +0100, Dominique Rodrigues wrote: > > >>>Le 22/01/2012 16:00, Alon Levy a écrit : > > >>>>On Fri, Jan 20, 2012 at 02:04:47PM -0500, Yaniv Kaul wrote: > > >>>>>----- Original Message ----- > > >>>>>>On Wed, Jan 18, 2012 at 11:59:45AM +0100, Dominique Rodrigues wrote: > > >>>>>>>Le 18/01/2012 11:48, Alon Levy a écrit : > > >>>>>>>>On Wed, Jan 18, 2012 at 11:39:13AM +0100, Dominique Rodrigues > > >>>>>>>>wrote: > > >>>>>>>>>Le 18/01/2012 11:32, Alon Levy a écrit : > > >>>>>>>>>>On Wed, Jan 18, 2012 at 11:27:14AM +0100, Dominique Rodrigues > > >>>>>>>>>>wrote: > > >>>>>>>>>>>Le 18/01/2012 11:18, Alon Levy a écrit : > > >>>>>>>>>>>>On Wed, Jan 18, 2012 at 09:54:49AM +0100, Dominique Rodrigues > > >>>>>>>>>>>>wrote: > > >>>>>>>>>>>>>Le 18/01/2012 09:44, Alon Levy a écrit : > > >>>>>>>>>>>>>>On Wed, Jan 18, 2012 at 08:06:40AM +0100, Dominique > > >>>>>>>>>>>>>>Rodrigues wrote: > > >>>>>>>>>>>>>>>Hi, > > >>>>>>>>>>>>>>> > > >>>>>>>>>>>>>>>Since I use qxl driver in virtual desktop powered by > > >>>>>>>>>>>>>>>qemu-kvm, I > > >>>>>>>>>>>>>>>found a strange problem with Gimp. > > >>>>>>>>>>>>>>> > > >>>>>>>>>>>>>>>After launching Gimp, open a new windows, and then try to > > >>>>>>>>>>>>>>>draw > > >>>>>>>>>>>>>>>something. It appears that the drawing is very slow and > > >>>>>>>>>>>>>>>does not > > >>>>>>>>>>>>>>>follow the mouse at all. > > >>>>>>>>>>>>>>> > > >>>>>>>>>>>>>>>It is the same if I use spicy, spicec or vnc to connect to > > >>>>>>>>>>>>>>>my > > >>>>>>>>>>>>>>>virtual desktop. > > >>>>>>>>>>>>>>> > > >>>>>>>>>>>>>>>This problem does not appear with cirrus or vmware graphic > > >>>>>>>>>>>>>>>drivers. > > >>>>>>>>>>>>>>> > > >>>>>>>>>>>>>>>I found that on any Linux distribution (CentOS, RHEL, > > >>>>>>>>>>>>>>>Scientific > > >>>>>>>>>>>>>>>Linux, Debian, Ubuntu). > > >>>>>>>>>>>>>>> > > >>>>>>>>>>>>>>>I currently use : > > >>>>>>>>>>>>>>>- qemu-kvm 1.0 compiled with spice support > > >>>>>>>>>>>>>>>- spice-protocol 0.10.1 > > >>>>>>>>>>>>>>>- spice 0.10 > > >>>>>>>>>>>>>>>- spice-gtk 0.7 > > >>>>>>>>>>>>>>>- xorg-qxl driver 0.16 > > >>>>>>>>>>>>>>> > > >>>>>>>>>>>>>>>Is there any explanation for that ? > > >>>>>>>>>>>>>>I would assume it is qxl driver cpu bound on something, > > >>>>>>>>>>>>>>probably busy > > >>>>>>>>>>>>>>waiting on the command ring. Can you run perf top on the > > >>>>>>>>>>>>>>guest? > > >>>>>>>>>>>>>> > > >>>>>>>>>>>>>Indeed, during the drawing in Gimp, Xorg takes between 55% > > >>>>>>>>>>>>>and 66% of CPU. > > >>>>>>>>>>>>> > > >>>>>>>>>>>>>After, Xorg goes down to 0.3%. > > >>>>>>>>>>>>> > > >>>>>>>>>>>>>(Test done on CentOS 6.2 guest, with 1280 Mb vRAM) > > >>>>>>>>>>>>ok, can you drill down - you should be able to install the > > >>>>>>>>>>>>debug symbols > > >>>>>>>>>>>>for the qxl driver (xorg-x11-drv-qxl package) and see the > > >>>>>>>>>>>>specific > > >>>>>>>>>>>>functions that are taking the most time. > > >>>>>>>>>>>> > > >>>>>>>>>>>I installed qxl driver from freedesktop.org : > > >>>>>>>>>>> > > >>>>>>>>>>># wget -c > > >>>>>>>>>>>http://xorg.freedesktop.org/releases/individual/driver/xf86-video-qxl-0.0.16.tar.bz2 > > >>>>>>>>>>># tar xvfj xf86-video-qxl-0.0.16.tar.bz2 > > >>>>>>>>>>># cd xf86-video-qxl-0.0.16 > > >>>>>>>>>>># ./configure --libdir=/usr/lib64 --prefix=/usr CFLAGS='-O3' > > >>>>>>>>>>># make > > >>>>>>>>>>># make install > > >>>>>>>>>>> > > >>>>>>>>>>>Do you mean that I should use CFLAGS with "-g" ? > > >>>>>>>>>>I think that's it, yes. > > >>>>>>>>>> > > >>>>>>>>>Ok. So how do you profile debug messages afterwhile ? > > >>>>>>>>> > > >>>>>>>>>If I "tail -f /var/log/Xorg.0.log", the only message I got is : > > >>>>>>>>> > > >>>>>>>>> Bad bpp: 1 (1) > > >>>>>>>>> > > >>>>>>>>>Other messages look standard. > > >>>>>>>>> > > >>>>>>>>Right, that's not interesting. What I meant was: > > >>>>>>>> > > >>>>>>>># yum install perf > > >>>>>>>># perf top > > >>>>>>>>copy paste the top entries. > > >>>>>>>> > > >>>>>>>Ok, that's it (from a screenshot of the VM): > > >>>>>>Try ssh'ing to the vm, you can then use copy-paste. > > >>>>>> > > >>>>>>>samples pcnt function DSO > > >>>>>>> > > >>>>>>>3796.00 60.4% hashlittle > > >>>>>>This sucks, unfortunately I don't have any quick fix for it. It's the > > >>>>>>hash computation done on each image. Needless to say it needs to be > > >>>>>>optimized - either made more efficient or reduce the number of calls. > > >>>>>> > > >>>>>>Soren, FYI. > > >>>>>You could move to murmur2, like Windows' QXL driver > > >>>>>(https://bugs.freedesktop.org/show_bug.cgi?id=37465) or murmur3 or > > >>>>>other faster ones (https://bugs.freedesktop.org/show_bug.cgi?id=35775). > > >>>>>At least it's not hashed twice > > >>>>>now(https://bugs.freedesktop.org/show_bug.cgi?id=37977 - worth > > >>>>>updating bug status?!), but I'm not sure it should be hashed at all, > > >>>>>if it's not cached. > > >>>>>Y. > > >>>>Looks like this could be x6 performance gain when compared to hashlittle > > >>>>(lookup3 at http://code.google.com/p/smhasher/). So it would still be > > >>>>better not to run it at all but it might stop being the bottleneck. I'll > > >>>>try to do a patch. > > >>>> > > >>>Sounds promising. > > >>Actually only 2x since we use a 32bit hash anyway (x86/x64). Still worth > > >>a patch. > > >> > > >Since the hash is not in use right now at all, but commented out, you > > >could get an even more remarkable performance improvement by disabling > > >it. If you can check the branch at > > > > > > git://people.freedesktop.org/~alon/xf86-video-qxl murmur3 > > > > > >You can tell us how much it actually improves for you. I didn't disable > > >the hashing, just replaced lookup3 with MurmurHash3 from > > >http://code.google.com/p/smhasher/wiki/MurmurHash3. > > > > > > > I guess I missed something, because I don't manage to launch the > > X-server now in my CentOS guest. > > > > This what I have done : > > > > # git clone git://people.freedesktop.org/~alon/xf86-video-qxl > > xf86-video-qxl-alon-git > > # cd xf86-video-qxl-alon-git > > # git checkout murmur3 > > # git branch > > * murmur3 > > surface-fixes > > # export > > PKG_CONFIG_PATH=/usr/local//share/pkgconfig/:/usr/local/lib/pkgconfig > > # ./autogen.sh --libdir=/usr/lib64 --prefix=/usr CFLAGS='-O3' > > # make > > # make install > > > > Where is my mistake ? > > Not yours, mine. Should have tested that it at least runs (missing > symbol)
Should be ok now. Tested with Xspice, but it's the same code so should be fine. > > > > > > > >>>>>>>/usr/lib64/xorg/modules/drivers/qxl_drv.so > > >>>>>>>2014.00 32.1% __memcpy_ssse3 /lib64/libc-2.12.so > > >>>>>>>341.00 5.4% download_box > > >>>>>>>/usr/lib64/xorg/modules/drivers/qxl_drv.so > > >>>>>>>61.00 1.0% __memset_sse2 > > >>>>>>> /lib64/libc-2.12.so > > >>>>>>>11.00 0.2% qxl_ring_push > > >>>>>>>/usr/lib64/xorg/modules/drivers/qxl_drv.so > > >>>>>>>10.00 0.2% finish_task_switch [kernel.kallsyms] > > >>>>>>>8.00 0.1% qxl_allocnf > > >>>>>>>/usr/lib64/xorg/modules/drivers/qxl_drv.so > > >>>>>>>8.00 0.1% retint_careful > > >>>>>>> [kernel.kallsyms] > > >>>>>>>6.00 0.1% hash_and_copy > > >>>>>>>/usr/lib64/xorg/modules/drivers/qxl_drv.so > > >>>>>>>>>>>>>>>Regards, > > >>>>>>>>>>>>>>> > > >>>>>>>>>>>>>>>-- > > >>>>>>>>>>>>>>> > > >>>>>>>>>>>>>>> > > >>>>>>>>>>>>>>> Dominique Rodrigues > > >>>>>>>>>>>>>>> > > >>>>>>>>>>>>>>>nanoClouD<http://www.nanocloud.com> > > >>>>>>>>>>>>>>>8, rue Lemercier > > >>>>>>>>>>>>>>>75017 Paris > > >>>>>>>>>>>>>>>France > > >>>>>>>>>>>>>>>standard : +33 1 77 69 64 38 > > >>>>>>>>>>>>>>>529 002 743 R.C.S. Paris > > >>>>>>>>>>>>>>>begin:vcard > > >>>>>>>>>>>>>>>fn:Dominique Rodrigues > > >>>>>>>>>>>>>>>n:Rodrigues;Dominique > > >>>>>>>>>>>>>>>org:nanoClouD > > >>>>>>>>>>>>>>>adr:;;8, rue Lemercier;Paris;;75017;France > > >>>>>>>>>>>>>>>email;internet:dominique.rodrig...@nanocloud.com > > >>>>>>>>>>>>>>>title:Directeur Technique > > >>>>>>>>>>>>>>>tel;work:+33 (0) 1 77 69 64 38 > > >>>>>>>>>>>>>>>tel;cell:+33 (0) 6 28 52 37 70 > > >>>>>>>>>>>>>>>url:www.nanocloud.com > > >>>>>>>>>>>>>>>version:2.1 > > >>>>>>>>>>>>>>>end:vcard > > >>>>>>>>>>>>>>> > > >>>>>>>>>>>>>>>_______________________________________________ > > >>>>>>>>>>>>>>>Spice-devel mailing list > > >>>>>>>>>>>>>>>Spice-devel@lists.freedesktop.org > > >>>>>>>>>>>>>>>http://lists.freedesktop.org/mailman/listinfo/spice-devel > > >>>>>>>>>>>>>begin:vcard > > >>>>>>>>>>>>>fn:Dominique Rodrigues > > >>>>>>>>>>>>>n:Rodrigues;Dominique > > >>>>>>>>>>>>>org:nanoClouD > > >>>>>>>>>>>>>adr:;;8, rue Lemercier;Paris;;75017;France > > >>>>>>>>>>>>>email;internet:dominique.rodrig...@nanocloud.com > > >>>>>>>>>>>>>title:Directeur Technique > > >>>>>>>>>>>>>tel;work:+33 (0) 1 77 69 64 38 > > >>>>>>>>>>>>>tel;cell:+33 (0) 6 28 52 37 70 > > >>>>>>>>>>>>>url:www.nanocloud.com > > >>>>>>>>>>>>>version:2.1 > > >>>>>>>>>>>>>end:vcard > > >>>>>>>>>>>>> > > >>>>>>>>>>>>>_______________________________________________ > > >>>>>>>>>>>>>Spice-devel mailing list > > >>>>>>>>>>>>>Spice-devel@lists.freedesktop.org > > >>>>>>>>>>>>>http://lists.freedesktop.org/mailman/listinfo/spice-devel > > >>>>>>>>>>>begin:vcard > > >>>>>>>>>>>fn:Dominique Rodrigues > > >>>>>>>>>>>n:Rodrigues;Dominique > > >>>>>>>>>>>org:nanoClouD > > >>>>>>>>>>>adr:;;8, rue Lemercier;Paris;;75017;France > > >>>>>>>>>>>email;internet:dominique.rodrig...@nanocloud.com > > >>>>>>>>>>>title:Directeur Technique > > >>>>>>>>>>>tel;work:+33 (0) 1 77 69 64 38 > > >>>>>>>>>>>tel;cell:+33 (0) 6 28 52 37 70 > > >>>>>>>>>>>url:www.nanocloud.com > > >>>>>>>>>>>version:2.1 > > >>>>>>>>>>>end:vcard > > >>>>>>>>>>> > > >>>>>>>>>begin:vcard > > >>>>>>>>>fn:Dominique Rodrigues > > >>>>>>>>>n:Rodrigues;Dominique > > >>>>>>>>>org:nanoClouD > > >>>>>>>>>adr:;;8, rue Lemercier;Paris;;75017;France > > >>>>>>>>>email;internet:dominique.rodrig...@nanocloud.com > > >>>>>>>>>title:Directeur Technique > > >>>>>>>>>tel;work:+33 (0) 1 77 69 64 38 > > >>>>>>>>>tel;cell:+33 (0) 6 28 52 37 70 > > >>>>>>>>>url:www.nanocloud.com > > >>>>>>>>>version:2.1 > > >>>>>>>>>end:vcard > > >>>>>>>>> > > >>>>>>>> > > >>>>>>>>>_______________________________________________ > > >>>>>>>>>Spice-devel mailing list > > >>>>>>>>>Spice-devel@lists.freedesktop.org > > >>>>>>>>>http://lists.freedesktop.org/mailman/listinfo/spice-devel > > >>>>>>>begin:vcard > > >>>>>>>fn:Dominique Rodrigues > > >>>>>>>n:Rodrigues;Dominique > > >>>>>>>org:nanoClouD > > >>>>>>>adr:;;8, rue Lemercier;Paris;;75017;France > > >>>>>>>email;internet:dominique.rodrig...@nanocloud.com > > >>>>>>>title:Directeur Technique > > >>>>>>>tel;work:+33 (0) 1 77 69 64 38 > > >>>>>>>tel;cell:+33 (0) 6 28 52 37 70 > > >>>>>>>url:www.nanocloud.com > > >>>>>>>version:2.1 > > >>>>>>>end:vcard > > >>>>>>> > > >>>>>> > > >>>>>>_______________________________________________ > > >>>>>>Spice-devel mailing list > > >>>>>>Spice-devel@lists.freedesktop.org > > >>>>>>http://lists.freedesktop.org/mailman/listinfo/spice-devel > > >>>>>> > > >>>begin:vcard > > >>>fn:Dominique Rodrigues > > >>>n:Rodrigues;Dominique > > >>>org:nanoClouD > > >>>adr:;;8, rue Lemercier;Paris;;75017;France > > >>>email;internet:dominique.rodrig...@nanocloud.com > > >>>title:Directeur Technique > > >>>tel;work:+33 (0) 1 77 69 64 38 > > >>>tel;cell:+33 (0) 6 28 52 37 70 > > >>>url:www.nanocloud.com > > >>>version:2.1 > > >>>end:vcard > > >>> > > >> > > >> > > >> > > >>>_______________________________________________ > > >>>Spice-devel mailing list > > >>>Spice-devel@lists.freedesktop.org > > >>>http://lists.freedesktop.org/mailman/listinfo/spice-devel > > >>_______________________________________________ > > >>Spice-devel mailing list > > >>Spice-devel@lists.freedesktop.org > > >>http://lists.freedesktop.org/mailman/listinfo/spice-devel > > > begin:vcard > > fn:Dominique Rodrigues > > n:Rodrigues;Dominique > > org:nanoClouD > > adr:;;8, rue Lemercier;Paris;;75017;France > > email;internet:dominique.rodrig...@nanocloud.com > > title:Directeur Technique > > tel;work:+33 (0) 1 77 69 64 38 > > tel;cell:+33 (0) 6 28 52 37 70 > > url:www.nanocloud.com > > version:2.1 > > end:vcard > > > > > > > > _______________________________________________ > > Spice-devel mailing list > > Spice-devel@lists.freedesktop.org > > http://lists.freedesktop.org/mailman/listinfo/spice-devel > > _______________________________________________ > Spice-devel mailing list > Spice-devel@lists.freedesktop.org > http://lists.freedesktop.org/mailman/listinfo/spice-devel _______________________________________________ Spice-devel mailing list Spice-devel@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/spice-devel
