Hi Antoine, On Mon, Dec 10, 2018 at 08:25:55PM -0800, Antoine Martin via shifter-users wrote: > On 08/12/2018 11:39, Marc Haber via shifter-users wrote: > > I would like to do an xpra connection to an xpra server running under a > > different account on the same host. I am running Debian unstable and > > have xpra 2.4.2. The box is a strong Six-Core machine with plenty of > > free RAM and a fast SSD. > > > > Running a Firefox browser over this connection is quite slow. I have to > > wait multiple hundreds of milliseconds before the reaction to a click > > can be seen. Scrolling a window takes like ten seconds until the picture > > is completely re-drawn at full resolution. Is that the expected behavior > > on a local host with no network involved, plenty of CPU and plenty of > > RAM? > No. It should be almost indistinguishable from native for all but the > most extreme use cases.
My installation is wide apart from that. > The most important thing for local connections is to enable mmap. (see > mmap command line options and use "-d mmap" to enable debug logging) My system explicitly says mmap disabled, shouldn't that be detected automatically? Both accounts are member of the xpra group. I start the server with ssh marc@localhost xpra start --mmap=/var/tmp/mh-mmap -d mmap --mmap-group --socket-dir=/var/tmp --speaker=off --encoding=png/P --daemon=no --dpi=96 --webcam=no --mdns=no --pulseaudio=no --start=konsole :100 which makes the socket show up in /var/tmp with marc:xpra 660. When I then start the client as xpra attach ssh:marc@localhost:100 --mmap=/var/tmp/mh-mmap --socket-dir=/var/tmp --mmap-group --dpi=96 --desktop-scaling=off -d mmap I see /var/tmp/mh-mmap appear for a short time as mh:mh 775, then I see the server complaining: 2018-12-11 18:36:48,410 client supplied mmap_file=/var/tmp/mh-mmap 2018-12-11 18:36:48,410 mmap supported=True, token=242228041280381797676313904508936308232 2018-12-11 18:36:48,410 using global server specified mmap file path: '/var/tmp/mh-mmap' 2018-12-11 18:36:48,411 Error: cannot access mmap file '/var/tmp/mh-mmap': 2018-12-11 18:36:48,411 [Errno 13] Permission denied: '/var/tmp/mh-mmap' 2018-12-11 18:36:48,411 see mmap-group option? 2018-12-11 18:36:48,411 found client mmap area: None, 0 bytes - min mmap size=67108864 and then the mmap file disappears again. What am I doing wrong? > > I notice that the server complains twice on startup: > > 2018-12-08 20:19:08,741 cannot use uinput for virtual devices: > > 2018-12-08 20:19:08,741 [Errno 13] Failed to open the uinput device: > > Permission denied > Harmless and completely safe to ignore. > > WARNING: no 'numpy' module, HyBi protocol will be slower > This one is bogus. > > Both have been added to the FAQ: > https://xpra.org/trac/wiki/FAQ Did I miss that or was it added just recently? > > Here is what the server logs: > > marc@fan:~$ xpra start --daemon=no --speaker=off --webcam=no --mdns=no > > --pulseaudio=no --start=konsole :100 > > 2018-12-08 20:20:27,121 cannot use uinput for virtual devices: > > 2018-12-08 20:20:27,121 [Errno 13] Failed to open the uinput device: > > Permission denied > (..)> 2018-12-08 20:23:57,360 DPI set to 51 x 48 (wanted 54 x 77) > > 2018-12-08 20:23:57,361 you may experience scaling problems, such as huge > > or small fonts, etc > > 2018-12-08 20:23:57,361 to fix this issue, try the dpi switch, or use a > > patched Xorg dummy driver > That's odd. Make sure to use the patched dummy driver from the repository. I'd rather refrain from having to patch my xorg, I can live with giving hard-coded dpi values (which I usually do, but didn't do when creating these mails to make things simpler). > (..)> In the panel applet, I have set Picture => Fixed speed to "Lowest > > latency". The session information claims that I have 60 ms frame total > > latency, but it feels like a multiple of that. Any networked RDP session > > to a Windows machine feels much faster. > Even remote connections should be as fast as RDP, let alone local ones. They're not. > Feel free to create a ticket to fix the non-mmap case. Like "xrdp very slow" and giving the same information like in the thread starting message? Greetings Marc -- ----------------------------------------------------------------------------- Marc Haber | "I don't trust Computers. They | Mailadresse im Header Leimen, Germany | lose things." Winona Ryder | Fon: *49 6224 1600402 Nordisch by Nature | How to make an American Quilt | Fax: *49 6224 1600421 _______________________________________________ shifter-users mailing list shifter-users@lists.devloop.org.uk http://lists.devloop.org.uk/mailman/listinfo/shifter-users
