[GLLUG] X using too much CPU

[Hampton, Rodney]

As a side note, there are times when you might want to run something from
the command line and pretend that an X server is available.  Xvfb is the
solution.

For example, recently I wanted to load test the streaming capabilities of
Real Network's Helix Universal Server and couldn't fork over a ton of money
to Mercury Interactive for their RTSP module (pricing begins at $15,000 for
25 virtual users!).  openRTSP won't really handle the real9 video format.

So, basically I forked a bunch of realplayers on some linux boxes by running
them from the command line and having them connect to Xvfb.
http://www.xfree86.org/4.0.1/Xvfb.1.html  I didn't incur the overhead of an
X server, I could push a lot more load per linux box, and I was able to get
some decent metrics.

Regards,




Rodney Hampton
http://www.hamptonandassociates.net


-----Original Message-----
From: Edward Glowacki [mailto:glowack2 at gmail.com]
Sent: Thursday, July 14, 2005 3:25 PM
To: linux-user at egr.msu.edu
Subject: Re: [GLLUG] X using too much CPU


You can probably get away with just installing the X client libraries
and not have an X server running on there at all.  If you need to run
the Oracle GUI utilities, or anything else, you can display them
remotely (preferably tunneled through SSH) to any machine with an X
server.  That should free up a lot of memory, and in this case CPU. =)

-ED  
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