[FreeNX-kNX] freenx hangs

[Mario Becroft]

Dmitry Melekhov <dm at belkam.com> writes:

> Hello!
>
> Our users use java based software on redhat  5.4  x86-64 server
> connecting to this server with nxclient from windows machines.
> Problem is that sometimes (and really often enough) their sessions
> hungs, they see white screen, only way to solve this is to terminate
> session and start new one. Session can be suspended, but after resume
> they see only white screen.
> Looks like software bug causes nx to hang. Unfortunately, I don't know
> how to reproduce problem.
> Could you tell me what can I do to solve this problem?

Does this happen only when runniing a certain program? If so, what is
it?

I suggest the following method of analysis: when a user's session is in
the frozen state, check the CPU usage of their nxagent on the NX server
host. Is it using 100% CPU? Also check the CPU usage of nxssh and the X
server on the NX client host.

Try killing the program that triggers the problem. Does the session
un-freeze? If not, is there any other change in the nxagent behaviour?

When the session is in the frozen state, run strace on it and obtain a
log of what it is doing. Analyse it or post it here.

-- 
Mario Becroft <mb at gem.win.co.nz>