[K12OSN] Poor performance woes

Luis Montes monteslu at cox.net
Wed Sep 21 18:31:10 UTC 2011

I have a vague recollection of firefox using more client ram than it 
should have a few years back that cause me grief.
Definitely give Chrome a shot and see if performance gets better.

Jeff Siddall wrote:
> On 09/20/2011 03:18 PM, Jomegat wrote:
>> When he loads the web page - with no flash in it that I can find - the
>> network maxes out at 12MiB/sec, and it takes an eternity for the page to
>> load. He reports that sometimes this particular page will cause the TC
>> to crash (black screen with text followed by login screen), but he was
>> not able to reproduce that while I was there. I suspect there is some
>> user error involved in the crash scenario, but it will be difficult to
>> prove.
> Unfortunately there are some cases where LTSP just doesn't work well. 
> Sounds like you hit one of those where javascript is doing something 
> silly with the display and sending raw display updates across the LAN 
> is killing things.
> You can probably get around the problem of that one page by running 
> the browser as a localapp, but of course then there is no flash for 
> that user.
> That being said, there are a few things you can do:
> 1. Try a different browser (ex: chrome).  It may work better and it 
> would allow you to run a dual browser (ex: firefox as a localapp and 
> chrome as a native).  If the users will put up with it tell them to 
> run flash sites in Chrome and all others in Firefox.  Ugly for sure 
> but may work for the few exception cases you are running into.
> 2. Fire up one of those clients as a Windoze machine and load a flash 
> page to show that Windows on your clients is a non-option.
> 3. Try installing more RAM in one client and see if it works any 
> better on the problem page.  That should confirm/deny the running out 
> of RAM question.  Also, that will allow you to try installing flash in 
> the chroot and see if the performance is acceptable.  Maybe you can 
> add some RAM to your clients and successfully run them all with 
> localapp browsers.
> 4. If they are going to upgrade the PCs anyway, try to convince them 
> to order them diskless initially and run either LTSP with localapps or 
> something like DRBL.  If nothing else they save admin time/effort vs. 
> any Windows option plus the cost of all the hard drives and Windoze 
> licenses in the clients.  They can still add drives and Windoze after 
> if it doesn't work.
> Good luck!
> Jeff
> _______________________________________________
> K12OSN mailing list
> K12OSN at redhat.com
> https://www.redhat.com/mailman/listinfo/k12osn
> For more info see <http://www.k12os.org>

More information about the K12OSN mailing list