Ubuntu SSH X11 Forwarded Client Very Slow
Running SSH X forwarded session from my Ubuntu 12LTS client to a SLES server results in very slow(seconds per mouse click) GUI app(on the server) performance.
Using a windows client from the same LAN with Putty and XMing to SSH to the same server hosted application is blazing fast(instantaneous).
Likewise, SSH -X from other SLES machines to the same server hosted application is very fast.
I have tried numerous combinations of ssh parameters(listed below) with no effect on performance. The Ubuntu client is painfully slow while PuTTY/XMing are very fast.
-X
-C
-o GSSAPIAuthentication no
-c blowfish-cbc
UseDNS no -- on the servers sshd_config
12.04 ssh putty x11-forwarding
asked Jan 29 '14 at 22:28
user241527user241527
2113
add a comment |
Running SSH X forwarded session from my Ubuntu 12LTS client to a SLES server results in very slow(seconds per mouse click) GUI app(on the server) performance.
Using a windows client from the same LAN with Putty and XMing to SSH to the same server hosted application is blazing fast(instantaneous).
Likewise, SSH -X from other SLES machines to the same server hosted application is very fast.
I have tried numerous combinations of ssh parameters(listed below) with no effect on performance. The Ubuntu client is painfully slow while PuTTY/XMing are very fast.
-X
-C
-o GSSAPIAuthentication no
-c blowfish-cbc
UseDNS no -- on the servers sshd_config
12.04 ssh putty x11-forwarding
asked Jan 29 '14 at 22:28
user241527user241527
2113
Post a picture of your speedtest results here. I think it may be an internet issue with Ubuntu. Do one in Windows as well so we may compare the two.
– Zzzach...
Mar 26 '14 at 3:10
@user241527: Did you solve this problem in the mean time? I have a similar problem: I used to work remotely from my laptop to my desktop, running Ubuntu 12.04 and 10.04 respectively, and connected through my home network. After I have bought a new desktop and upgraded to 12.04, I can barely work remotely: sometimes a window will just freeze for half a minute or so.
– Giorgio
Apr 20 '14 at 16:05
add a comment |
Running SSH X forwarded session from my Ubuntu 12LTS client to a SLES server results in very slow(seconds per mouse click) GUI app(on the server) performance.
Using a windows client from the same LAN with Putty and XMing to SSH to the same server hosted application is blazing fast(instantaneous).
Likewise, SSH -X from other SLES machines to the same server hosted application is very fast.
I have tried numerous combinations of ssh parameters(listed below) with no effect on performance. The Ubuntu client is painfully slow while PuTTY/XMing are very fast.
-X
-C
-o GSSAPIAuthentication no
-c blowfish-cbc
UseDNS no -- on the servers sshd_config
12.04 ssh putty x11-forwarding
asked Jan 29 '14 at 22:28
user241527user241527
2113
Running SSH X forwarded session from my Ubuntu 12LTS client to a SLES server results in very slow(seconds per mouse click) GUI app(on the server) performance.
Using a windows client from the same LAN with Putty and XMing to SSH to the same server hosted application is blazing fast(instantaneous).
Likewise, SSH -X from other SLES machines to the same server hosted application is very fast.
I have tried numerous combinations of ssh parameters(listed below) with no effect on performance. The Ubuntu client is painfully slow while PuTTY/XMing are very fast.
-X
-C
-o GSSAPIAuthentication no
-c blowfish-cbc
UseDNS no -- on the servers sshd_config
12.04 ssh putty x11-forwarding
12.04 ssh putty x11-forwarding
asked Jan 29 '14 at 22:28
user241527user241527
2113
asked Jan 29 '14 at 22:28
user241527user241527
2113
edited Jan 29 '14 at 23:22
user241527
asked Jan 29 '14 at 22:28
user241527user241527
2113
asked Jan 29 '14 at 22:28
user241527user241527
2113
asked Jan 29 '14 at 22:28
user241527user241527
2113
2113
Post a picture of your speedtest results here. I think it may be an internet issue with Ubuntu. Do one in Windows as well so we may compare the two.
– Zzzach...
Mar 26 '14 at 3:10
@user241527: Did you solve this problem in the mean time? I have a similar problem: I used to work remotely from my laptop to my desktop, running Ubuntu 12.04 and 10.04 respectively, and connected through my home network. After I have bought a new desktop and upgraded to 12.04, I can barely work remotely: sometimes a window will just freeze for half a minute or so.
– Giorgio
Apr 20 '14 at 16:05
add a comment |
Post a picture of your speedtest results here. I think it may be an internet issue with Ubuntu. Do one in Windows as well so we may compare the two.
– Zzzach...
Mar 26 '14 at 3:10
@user241527: Did you solve this problem in the mean time? I have a similar problem: I used to work remotely from my laptop to my desktop, running Ubuntu 12.04 and 10.04 respectively, and connected through my home network. After I have bought a new desktop and upgraded to 12.04, I can barely work remotely: sometimes a window will just freeze for half a minute or so.
– Giorgio
Apr 20 '14 at 16:05
Post a picture of your speedtest results here. I think it may be an internet issue with Ubuntu. Do one in Windows as well so we may compare the two.
– Zzzach...
Mar 26 '14 at 3:10
Post a picture of your speedtest results here. I think it may be an internet issue with Ubuntu. Do one in Windows as well so we may compare the two.
– Zzzach...
Mar 26 '14 at 3:10
@user241527: Did you solve this problem in the mean time? I have a similar problem: I used to work remotely from my laptop to my desktop, running Ubuntu 12.04 and 10.04 respectively, and connected through my home network. After I have bought a new desktop and upgraded to 12.04, I can barely work remotely: sometimes a window will just freeze for half a minute or so.
– Giorgio
Apr 20 '14 at 16:05
@user241527: Did you solve this problem in the mean time? I have a similar problem: I used to work remotely from my laptop to my desktop, running Ubuntu 12.04 and 10.04 respectively, and connected through my home network. After I have bought a new desktop and upgraded to 12.04, I can barely work remotely: sometimes a window will just freeze for half a minute or so.
– Giorgio
Apr 20 '14 at 16:05
add a comment |
1 Answer
1
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oldest
votes
XMing doesn't support the X11 security protocol, causing it to default to trusted forwarding. It's possible SLES has ForwardX11Trusted enabled, while Ubuntu doesn't. That option allows the remote X client to make trusted calls on the local X server, which is a security risk if you don't trust the server, but can provide a substantial performance boost if you do.
You can use ssh -Y to connect with trusted X11 forwarding or set the ForwardX11Trusted option in your ssh client config.
answered Apr 27 '14 at 2:35
chizuchizu
1
add a comment |
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1 Answer
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1 Answer
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active
oldest
votes
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oldest
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oldest
votes
XMing doesn't support the X11 security protocol, causing it to default to trusted forwarding. It's possible SLES has ForwardX11Trusted enabled, while Ubuntu doesn't. That option allows the remote X client to make trusted calls on the local X server, which is a security risk if you don't trust the server, but can provide a substantial performance boost if you do.
You can use ssh -Y to connect with trusted X11 forwarding or set the ForwardX11Trusted option in your ssh client config.
answered Apr 27 '14 at 2:35
chizuchizu
1
add a comment |
XMing doesn't support the X11 security protocol, causing it to default to trusted forwarding. It's possible SLES has ForwardX11Trusted enabled, while Ubuntu doesn't. That option allows the remote X client to make trusted calls on the local X server, which is a security risk if you don't trust the server, but can provide a substantial performance boost if you do.
You can use ssh -Y to connect with trusted X11 forwarding or set the ForwardX11Trusted option in your ssh client config.
answered Apr 27 '14 at 2:35
chizuchizu
1
add a comment |
XMing doesn't support the X11 security protocol, causing it to default to trusted forwarding. It's possible SLES has ForwardX11Trusted enabled, while Ubuntu doesn't. That option allows the remote X client to make trusted calls on the local X server, which is a security risk if you don't trust the server, but can provide a substantial performance boost if you do.
You can use ssh -Y to connect with trusted X11 forwarding or set the ForwardX11Trusted option in your ssh client config.
answered Apr 27 '14 at 2:35
chizuchizu
1
XMing doesn't support the X11 security protocol, causing it to default to trusted forwarding. It's possible SLES has ForwardX11Trusted enabled, while Ubuntu doesn't. That option allows the remote X client to make trusted calls on the local X server, which is a security risk if you don't trust the server, but can provide a substantial performance boost if you do.
You can use ssh -Y to connect with trusted X11 forwarding or set the ForwardX11Trusted option in your ssh client config.
answered Apr 27 '14 at 2:35
chizuchizu
1
answered Apr 27 '14 at 2:35
chizuchizu
1
answered Apr 27 '14 at 2:35
chizuchizu
1
answered Apr 27 '14 at 2:35
chizuchizu
1
1
add a comment |
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Post a picture of your speedtest results here. I think it may be an internet issue with Ubuntu. Do one in Windows as well so we may compare the two.
– Zzzach...
Mar 26 '14 at 3:10
@user241527: Did you solve this problem in the mean time? I have a similar problem: I used to work remotely from my laptop to my desktop, running Ubuntu 12.04 and 10.04 respectively, and connected through my home network. After I have bought a new desktop and upgraded to 12.04, I can barely work remotely: sometimes a window will just freeze for half a minute or so.
– Giorgio
Apr 20 '14 at 16:05