No that does not correspond to what I see.
I agree that Xsun usage is high in both cases, but I cant get Xterm to
generate
more than 3% cpuload when scrolling at full scrolling speed.
( I am usinga Sunray 1G and a SB1500 silver as the "Server" )
There are two "xterm" on my system /usr/openwin/bin/xterm and
/opt/sfw/bin/xterm
When doing the same test on the SB1500/XVR600 graphics console
I get just over 30 % cpuload from gnome terminal and 40 % from Xsun
But
using xterm I get 3% from Xsun and 3% from Xterm
Its pretty obvious that the guys who wrote Gnome_terminal made the usual
PC mistake. They built the app to run on a single user PC not a
multiuser server.
While working on FreeBSD I noticed that there is a DRI/GLX
accelleration option to
VTE http://www.freshports.org/x11-toolkits/vte/
Its included in my next build of Gnome 2.14 on FreeBSD so ill see what
it does
to speed up gnome terminal which has a terrribel performance on freeBsd
as well.
Then again Is there any graphics acceleration in the SunRay ?
//Lars
Sam Kimery wrote:
I just tried it with xterm, and the results were much the same: > 40% CPU
utilization from Xsun and nearly 15% from xterm. This just seems very
excessive for scrolling text in a small window. I don't see this type of
CPU consumption on a sparc system with a local frame buffer, so I'm
confused as to why the SunRay behaves this way.
At this rate, 4 users with xterms scrolling large amounts of text bring
the server to its knees. Buying sufficient numbers of SunRay servers to
handle that kind of loading seems to negate the financial benefits of
SunRays.
Is there specific tuning or configuration that needs be done for Solaris 10?
- Sam
This has been observed before with gnome-terminal. That's
a terrible application, I recommend using xterm.
Some work has been done to try to speed gnome-terminal up,
it should be better in future.
-Bob
Sam Kimery wrote:
I'm running a single SunRay which hangs off of a V240 (Solaris 10, all
the
latest patches as of yesterday) with SRSS 3.1.
If I open a gnome-terminal and cat a very large ASCII file, the CPU
utilization of the Xsun server just to nearly 30%, and the CPU
utilization
of the gnome-terminal jumps to between 15 and 20%.
The same behavior can be replicated by doing anything that generates
large
amounts of terminal output (e.g. ls -l in a large directory).
Is this normal behavior? It seems excessive to me. Looking through the
list archives doesn't reveal other complaints, so I suspect that the
problem is most likely pilot error during the installation or
configuration of SRSS (or perhaps Solaris 10).
Any suggestions or comments?
- Sam
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