[K12OSN] LTSP CentOS5 slow

Robert Arkiletian robark at gmail.com
Sat Nov 29 03:28:13 UTC 2008

2008/11/28 jones yeates <jones_yeates at hotmail.com>:
> 6GB ram (serving max 30 students at a time)
> 1.  TOP output:
> top - 16:40:27 up 4 days,  2:10,  7 users,  load average: 0.16, 0.24, 0.20
> Tasks: 211 total,   1 running, 208 sleeping,   0 stopped,   2 zombie
> Cpu(s):  2.9%us,  0.2%sy,  0.0%ni, 96.6%id,  0.2%wa,  0.0%hi,  0.1%si,
> 0.0%st
> Mem:   3631812k total,  2337164k used,  1294648k free,   357848k buffers
> Swap:  1036088k total,      160k used,  1035928k free,  1278744k cached

you have 6gb of ram but you are not using a PAE kernel so you only
have 3.6 available. You must install a PAE kernel to utilize all your

#yum install kernel-PAE

but you will have to reboot for it to take effect so don't do it remotely.

Robert Arkiletian
Eric Hamber Secondary, Vancouver, Canada
Fl_TeacherTool http://www3.telus.net/public/robark/Fl_TeacherTool/
C++ GUI tutorial http://www3.telus.net/public/robark/

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