Interesting, I think, that the newer clients take 1/4 of the time of the older.* This seems to imply that the cause isn't just on the server?
I've not specifically added clients to /etc/hosts.* What does this do?
"LDM_DIRECTX=True" what does this do?
I had heard of fl_teachertool but am just checking into it.* Seems like it has more features than iTALC, an alternative project.* I looked for a comparison of the two, didn't find much though looks like it might not be kept up?* Author says might want to go for iTALC for this reason... http://www.linux.com/archive/feature/151686* What do you think?* Ever tried iTALC?* Yes, we'll get through this
On Sun, Nov 15, 2009 at 10:12 AM, Jim Christiansen <firstname.lastname@example.org> wrote:
I haven't topped the server yet at client log on yet.* It was on my list though for Tuesday (Monday= day off)
I can tell you that it seems we do have the same problem.* My 9 year old etherbooting boxes with newer (4 year old) rt8139 nics take 2 minutes to log on on after the students push enter for their passwords.* I have 25 of these old boxes.* They are 128 or 256 meg amd k 450s and 500s.
My newer- 4 year old "Computers For BC Schools" that are 1.5 Gighz* and 1 gig ram take 30 seconds to log on.* They are also 10/100 nics.
The etherboot module that I built from Rom-o-matic.com and installed into the old clients' grub is unchanged.* I did have to specify the tftp pxelinux.0 for all of the old boxes in the dhcpd-server.conf file for them to boot.* This took me a little while to sort out.* It just failed without specifically calling for each mac...* Maybe this has something to do with it.
The newer boxes just boot fine with the default dhcpd-server.conf...*
What I'll do next is specify each client in the /etc/hosts file- this isn't done yet.* Have you added your clients to the hosts file?
I did add a custom lst.conf file to /var/bla/bla/bla somewhere with the LDM_DIRECTX=True and it made a small difference to boot time.
My server is a 3 or 4 year old twin 64 bit xenon with 6 gigs ram.* It has never been bogged down before.* Client speeds have always been like stand-alone systems.* I had not installed flash on the old K12LTSP system and kept games like Nibbles off of my system.
I am happy with the Ubuntu-ltsp implementation and look forward to setting up local apps.* What I really want to get running is Roberta Arkiletian's fl_teachertool up and running.* It is a gem.* I expect we'll get through this pretty soon- it's just another minor hurdle ;-)
Date: Sat, 14 Nov 2009 10:31:12 -0600
From: David Groos <email@example.com>
Subject: Re: Too much network activity?
To: Edubuntu Users Group <firstname.lastname@example.org>
* * * *<195a0730911140831j3445cba1pdcd7f4217e93e705@mail .gmail.com>
Content-Type: text/plain; charset="iso-8859-1"
Seeing Jim's e-mail about his computers being slow to log on is motivating
me to re-post to this previous post. *I'll repeat that since the last few
weeks, students have to wait maybe 2-4 minutes for their log on process to
finish. *I don't think it's worse in the afternoon though--students are less
patient at that time it seems.
I haven't added new software to my LTSP server except for regular updates.
I've had System Monitor on the last week a good bit. *2 things draw my
attention, the first I already mentioned that there is a lot of network
activity even when only 1 TC is booted. *The other is that the 4 CPU's seem
to be maxing out for a few seconds then go to around 60-70% about for 5-10
seconds, then again max out for a few seconds. *When they peg at 100% it
appears that's when another TC or 2 will get further logged in. *I'm not
sure about how much logging in happens during that maxing out period, but
that is when the logging in process seems to get furthered.
I went to the logs, looked at a few but didn't know where to look and
nothing really jumped out to me. *Any thoughts about how to further
troubleshoot this? *Might be related to Jim's TC problems, too, anyone else
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