1) I don't know if this applies to the Celeron processors but I have
had bad experiences running LTSP on single processor servers running the
2.6.x kernel. That's running 2.6.x on the server, not the client.
An instance of a Java game or two will bring the server to its knees.
The same server happily chugs away using a 2.4.x kernel.
In one set-up I have 13 clients running Firefox and OO off a single
P-III with 1Gb of memory without trouble using 2.4.x.
2) I'd suggest running something like "top" to see what your system load
is and to see what is sucking up your resources.
3) As way of example system:
- 26 Firefox/OO stations plus 10 just Firefox stations
- Running a proxy server and management software
Duel processor Xeon 2.4Ghz
4Gb Memory
*single* (no-raid) 10K 36Gb SCSI drive
Typical use is kids playing Java games on 5-10 of the terminals while
adults using the rest for various OO and Firefox tasks simultaneously.
4) Another example system:
- 12 Firefox/OO stations plus 5 just Firefox stations
- Running a proxy server and management software
Single processor P-IV 1.8Ghz
2Gb Memory
*single* (no-raid) 10K 36Gb SCSI drive
Typical use is kids playing Java games on 4-6 of the terminals while
adults using the rest for various OO and Firefox tasks simultaneously.
Pete Billson
--
http://www.elbnet.com
ELB Internet Service, Inc.
Web Design, Computer Consulting, Internet Hosting
nigel barker wrote:
Thanks for the suggestions guys
This system is fine up to about 8 clients.
hdparm gives this with 6 clients happily using open office and firefox.
They are saving files onto a separate server via NFS.
Timing buffer-cache reads: 852 MB in 2.01 seconds = 423.31 MB/sec
Timing buffered disk reads: 90 MB in 3.02 seconds = 29.76 MB/sec
Then this is with 15 clients during a period of unacceptable delay:
Timing buffer-cache reads: 376 MB in 2.96 seconds = 127.13 MB/sec
Timing buffered disk reads: 94 MB in 3.01 seconds = 31.20 MB/sec
Are these figures bad? They look ok compared to some I found on the web.
yes I have DDR RAM
I will find a P4 that fits and see how that goes.
It would be great if more people could chip in with their examples of what
works for 20-25 clients.
I don;t get how to have a server just for open office. How do you do that?
Thanks again!
nigel
Depending on the workload, lots of different things in
a system can become a bottle-neck, but in this case I
think there is no question that you're using an
under-powered CPU.
From the Intel web site for the Celeron:
http://www.intel.com/products/processor/celeron/index.htm
Recommended Applications:
Basic Computing Needs
E-mail
Home Finance Software
Educational Software for Your Kids
Probably not what you had in mind while you were
building your server.
You’re going to want to replace that Celeron with a
P4, which can be a pretty inexpensive upgrade that
provides a lot of bang for the buck. Depending on the
motherboard you’re using, there should be a number of
P4’s that you can drop in as a replacement for your
current processor; get the best one you can afford.
Todd
--- nigel barker <[EMAIL PROTECTED]> wrote:
Hi folks
I was under the impression that RAM is everything in
the server, so I
built one with a 2G celeron and 2G of RAM.
However the CPU regularly runs at 100% with only
10-15 clients, and there
are unacceptable delays for those clients. The RAM
usage has never even
reached 1G and swap is of course untouched.
All clients use Icewm, and the main things they run
are open office,
firefox, konqueror file manager and the occasional
gimp.
What do I really need to support 20-25 clients? I
don't think I can afford
dual CPU.
Is it better to run two modest servers with load
balancing(I see there's a
howto on that), or should I just go for the fastest
processor I can
afford?
Does a 64bit CPU make any difference?
I'd be really interested to hear your actual
experiences instead of
reading all this apparently false theory on web
pages.
Thanks a lot
--
nigel
-------------------------------------------------------
This SF.Net email is sponsored by Yahoo.
Introducing Yahoo! Search Developer Network - Create
apps using Yahoo!
Search APIs Find out how you can build Yahoo!
directly into your own
Applications - visit
http://developer.yahoo.net/?fr=offad-ysdn-ostg-q22005
_____________________________________________________________________
Ltsp-discuss mailing list. To un-subscribe, or
change prefs, goto:
https://lists.sourceforge.net/lists/listinfo/ltsp-discuss
For additional LTSP help, try #ltsp channel on
irc.freenode.net
-------------------------------------------------------
This SF.Net email is sponsored by Yahoo.
Introducing Yahoo! Search Developer Network - Create apps using Yahoo!
Search APIs Find out how you can build Yahoo! directly into your own
Applications - visit
http://developer.yahoo.net/?fr=offad-ysdn-ostg-q22005
_____________________________________________________________________
Ltsp-discuss mailing list. To un-subscribe, or change prefs, goto:
https://lists.sourceforge.net/lists/listinfo/ltsp-discuss
For additional LTSP help, try #ltsp channel on irc.freenode.net
-------------------------------------------------------
This SF.Net email is sponsored by Yahoo.
Introducing Yahoo! Search Developer Network - Create apps using Yahoo!
Search APIs Find out how you can build Yahoo! directly into your own
Applications - visit http://developer.yahoo.net/?fr=offad-ysdn-ostg-q22005
_____________________________________________________________________
Ltsp-discuss mailing list. To un-subscribe, or change prefs, goto:
https://lists.sourceforge.net/lists/listinfo/ltsp-discuss
For additional LTSP help, try #ltsp channel on irc.freenode.net
