On Sun, Nov 15, 2009 at 9:57 AM, Steve Rippl <[email protected]>wrote:
> On Sat, 2009-11-14 at 10:31 -0600, David Groos wrote: > > 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 experiencing this? > > > > Thanks, > > David > > Are the users on Network homefolders or local to whichever server they > log into? What specific processes are hogging the resources? What > version of Ubuntu? > Thanks for asking, Steve. Home folders are local to the server to which students login. We are using Jaunty. The striking thing is that this slowdown started a few weeks ago. I tried server restart but need to be more science-teacher like and record resultant log in times :). I also tried re-building the chroot Friday after school--will see if that has any effect and report back what I find out. David
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