sshd takes a lot of CPU when forwarding X11 connections

sshd takes a lot of CPU when forwarding X11 connections

Post by Dan Smit » Thu, 26 Apr 2001 12:14:58



I've noticed that when I am using a program over a ssh-tunneled X11
connection, the sshd on the server is taking like 30% of the CPU.
What's the deal with that?!

--Dan

 
 
 

sshd takes a lot of CPU when forwarding X11 connections

Post by Dean Thompso » Thu, 26 Apr 2001 13:28:18


Hi!,

Quote:> I've noticed that when I am using a program over a ssh-tunneled X11
> connection, the sshd on the server is taking like 30% of the CPU.
> What's the deal with that?!

In my experience this is quite normal.  The extra CPU is used to tunnel the X
traffic over your network interface as well as any compression that you might
be using to squeeze the data over the network.

See ya

Dean Thompson

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1. X freezes and X takes lots of CPU

I recently installed redhat 8.0 on two machines. on one it works fine,
and on the other i have problems with X.
1) If i run top, X shows up as using 99% of cpu.  if i set renice to 0,
and run another process, X takes 50% of the time.
2) It sometimes freezes the entire machine locally (I can still login
remotely).  I can make it freeze repeatedly with ctrl-alt-F1,
that is an attempt to bring up a virtual terminal.  it doesn't
seem to freeze up if i have very recently started the X server.
also I don't think that it takes as much cpu resources when the
Xserver has just been restarted.
i have swapped video cards, memory and ethernet card and sound card.

i have a ati rage 128 video card. a athalon XP2100 cpu
and a ecs k7s5a motherboard on the machine that misbehaves.
(the other one is different)
i suspect some configuration problem.  how do i stopo X from
gpbbling up cpu cycles to start?

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