[K12OSN] 4GB memory limit?

David Hopkins dahopkins429 at gmail.com
Thu Jan 3 18:53:30 UTC 2008

NCS uses CentOS and the Gnome window manager. Responsiveness is not
normally an issue with one exception: if a lot of users (like 20 or
more) simulatneously open FF we can see a huge hit for several
minutes.  In the FF default settings I have turned off checking for
updates for all users and that has helped. Moving to FF 2.0 also
helps.  This is running on both new (Opteron 64bit) and older (Xeon
hyperthreaded 2.4Gz 32bit, 4BG memory) servers.

When the system slows down, does top show that the system is using lots of swap?

Dave Hopkins

On Jan 3, 2008 1:38 PM, Shawn Powers <spowers at inlandlakes.org> wrote:
>  Which window manager are you using (not just Terrell)?  I am using xfce
> this time instead of my normal icewm/nautilus, because nautilus always
> seemed slow to me.  In production (everyone came back from break today),
> xfce seems just painfully slow.
> I think there might be some NFS issues too, but even the root user (ie, not
> nfs home directory) behaves much more slowly that it should.
> Thanks,
> -Shawn
> On Jan 3, 2008, at 1:32 PM, Terrell Prudé Jr. wrote:
> Quite a few of us out here are using the EL releases.  Right now, I'm typing
> this using K12LTSP 4.2EL, and just last week, I did my yum update, which
> pulled down all the new CentOS 4.6 updates.  If this is a new deployment,
> you would do very well to go with the 5.0EL release.
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