12:09 p.m.
I now have X11 via ssh working on F9, but refresh of the remote X11
window is extremely slow, even over a 1GB switch. Is there a way to
speed up the refresh?
Thanks.
12:42 p.m.
On Tue, 21 Apr 2009 13:09:50 -0400
Dave Feustel wrote:
I now have X11 via ssh working on F9, but refresh of the remote X11
window is extremely slow, even over a 1GB switch. Is there a way to
speed up the refresh?
This is a local area network? I've only ever noticed human perceptible
X speed problems on a lan if the network equipment was faulty and
dropping packets and retrying like crazy (or if the app is trying to
do something like software-only open GL over the network).
For long distance high latency connections, I use freenx which gives
every indication that it employs magic to speed things up :-).
1:24 p.m.
On Tue, Apr 21, 2009 at 01:42:27PM -0400, Tom Horsley wrote:
On Tue, 21 Apr 2009 13:09:50 -0400
Dave Feustel wrote:
> I now have X11 via ssh working on F9, but refresh of the remote X11
> window is extremely slow, even over a 1GB switch. Is there a way to
> speed up the refresh?
This is a local area network? I've only ever noticed human perceptible
X speed problems on a lan if the network equipment was faulty and
dropping packets and retrying like crazy (or if the app is trying to
do something like software-only open GL over the network).
The app I am running as a remote X11 is Maple 12.
For long distance high latency connections, I use freenx which gives
every indication that it employs magic to speed things up :-).
That's one of the options I will look into.
Thanks,
Dave Feustel
6:39 p.m.
On Thu, Apr 23, 2009 at 01:15:44AM +0200, Kevin Kofler wrote:
Dave Feustel wrote:
> I now have X11 via ssh working on F9, but refresh of the remote X11
> window is extremely slow, even over a 1GB switch. Is there a way to
> speed up the refresh?
Are you using the -C (compress) switch to ssh? If you aren't, try it.
Kevin Kofler
Using the -C flag and invoking XMaple, it takes 1'38" to load the
initial screens. This over a 1G switch. The delay is repeated every time
the maple windows need to be repainted. The delay makes remote X11 way
too slow for XMaple.
7 p.m.
On 4/23/09, Dave Feustel <dfeustel(a)mindspring.com> wrote:
On Thu, Apr 23, 2009 at 01:15:44AM +0200, Kevin Kofler wrote:
> Dave Feustel wrote:
> > I now have X11 via ssh working on F9, but refresh of the remote X11
> > window is extremely slow, even over a 1GB switch. Is there a way to
> > speed up the refresh?
>
> Are you using the -C (compress) switch to ssh? If you aren't, try it.
>
> Kevin Kofler
Using the -C flag and invoking XMaple, it takes 1'38" to load the
initial screens. This over a 1G switch. The delay is repeated every time
the maple windows need to be repainted. The delay makes remote X11 way
too slow for XMaple.
Something must be deeply wrong there. Here it takes 25 secs for the
main windows to get into a state where I can type in it. And that's
through a not blazingly fast adsl + wireless, on a netbook.
Andras
7:28 p.m.
On Thu, Apr 23, 2009 at 02:00:00AM +0200, Andras Simon wrote:
On 4/23/09, Dave Feustel <dfeustel(a)mindspring.com> wrote:
> On Thu, Apr 23, 2009 at 01:15:44AM +0200, Kevin Kofler wrote:
>> Dave Feustel wrote:
>> > I now have X11 via ssh working on F9, but refresh of the remote X11
>> > window is extremely slow, even over a 1GB switch. Is there a way to
>> > speed up the refresh?
>>
>> Are you using the -C (compress) switch to ssh? If you aren't, try it.
>>
>> Kevin Kofler
>
> Using the -C flag and invoking XMaple, it takes 1'38" to load the
> initial screens. This over a 1G switch. The delay is repeated every time
> the maple windows need to be repainted. The delay makes remote X11 way
> too slow for XMaple.
Something must be deeply wrong there. Here it takes 25 secs for the
main windows to get into a state where I can type in it. And that's
through a not blazingly fast adsl + wireless, on a netbook.
Andras
Are you running XMaple 12 in your test, or some older version?
12:04 a.m.
On 4/23/09, Dave Feustel <dfeustel(a)mindspring.com> wrote:
On Thu, Apr 23, 2009 at 02:00:00AM +0200, Andras Simon wrote:
> On 4/23/09, Dave Feustel <dfeustel(a)mindspring.com> wrote:
> > On Thu, Apr 23, 2009 at 01:15:44AM +0200, Kevin Kofler wrote:
> >> Dave Feustel wrote:
> >> > I now have X11 via ssh working on F9, but refresh of the remote X11
> >> > window is extremely slow, even over a 1GB switch. Is there a way to
> >> > speed up the refresh?
> >>
> >> Are you using the -C (compress) switch to ssh? If you aren't, try it.
> >>
> >> Kevin Kofler
> >
> > Using the -C flag and invoking XMaple, it takes 1'38" to load the
> > initial screens. This over a 1G switch. The delay is repeated every time
> > the maple windows need to be repainted. The delay makes remote X11 way
> > too slow for XMaple.
>
> Something must be deeply wrong there. Here it takes 25 secs for the
> main windows to get into a state where I can type in it. And that's
> through a not blazingly fast adsl + wireless, on a netbook.
>
> Andras
Are you running XMaple 12 in your test, or some older version?
Good question! It's v.9 only.
Andras
8:22 p.m.
On Wed, 22 Apr 2009 19:39:21 -0400
Dave Feustel wrote:
The delay is repeated every time
the maple windows need to be repainted.
I know nothing about maple, but if it is heavily graphics
oriented, VNC might actually work better, if you run the
VNC server on the remote system and vncviewer on the local
system (using ssh forwarding for the VNC port if necessary
to get through firewalls).
Since vnc only paints screen diffs since the last time it
painted, you often find heavy graphics work faster (though
interacting with graphics is another matter :-).
8:43 p.m.
On Tue, 2009-04-21 at 13:09 -0400, Dave Feustel wrote:
I now have X11 via ssh working on F9, but refresh of the remote X11
window is extremely slow, even over a 1GB switch. Is there a way to
speed up the refresh?
Suggestion: If your hardware supports it, turn on compositing
(Preferences > Look and Feel > Desktop Effects if using Gnome). As a
side effect of drawing the windows offscreen and composing them into the
final screen image, the windows are always mapped (unless minimized,
even if not on the active desktop), do not suffer any damage when
obscured, and therefore require far fewer redraws.
I often run apps at home and display them at work, and enabling Desktop
Effects makes a world of difference.
-Chris
9:18 p.m.
On Wed, Apr 22, 2009 at 09:43:53PM -0400, Chris Tyler wrote:
On Tue, 2009-04-21 at 13:09 -0400, Dave Feustel wrote:
> I now have X11 via ssh working on F9, but refresh of the remote X11
> window is extremely slow, even over a 1GB switch. Is there a way to
> speed up the refresh?
Suggestion: If your hardware supports it, turn on compositing
(Preferences > Look and Feel > Desktop Effects if using Gnome). As a
side effect of drawing the windows offscreen and composing them into the
final screen image, the windows are always mapped (unless minimized,
even if not on the active desktop), do not suffer any damage when
obscured, and therefore require far fewer redraws.
I often run apps at home and display them at work, and enabling Desktop
Effects makes a world of difference.
-Chris
This looks like a plan. How do I do this running Xcfe?
Thanks.
9:21 p.m.
On Wed, 22 Apr 2009 22:18:41 -0400
Dave Feustel <dfeustel(a)mindspring.com> wrote:
On Wed, Apr 22, 2009 at 09:43:53PM -0400, Chris Tyler wrote:
> On Tue, 2009-04-21 at 13:09 -0400, Dave Feustel wrote:
> > I now have X11 via ssh working on F9, but refresh of the remote
> > X11 window is extremely slow, even over a 1GB switch. Is there a
> > way to speed up the refresh?
>
> Suggestion: If your hardware supports it, turn on compositing
> (Preferences > Look and Feel > Desktop Effects if using Gnome). As a
> side effect of drawing the windows offscreen and composing them
> into the final screen image, the windows are always mapped (unless
> minimized, even if not on the active desktop), do not suffer any
> damage when obscured, and therefore require far fewer redraws.
>
> I often run apps at home and display them at work, and enabling
> Desktop Effects makes a world of difference.
>
> -Chris
This looks like a plan. How do I do this running Xcfe?
Prefs -> Window Manager Tweaks -> Compositor -> enable checkbox.
Thanks.
kevin
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12 comments
6 participants
participants (6)
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Andras Simon -
Chris Tyler -
Dave Feustel -
Kevin Fenzi -
Kevin Kofler -
Tom Horsley