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Actually determined this was a CUPS issue. I split the CUPS and
Samba servers, system load on the Samba box now averages about 0.3
while load average on the CUPS system is about 0.8 or 1.
Thanks,
Derek
On Aug 28, 2005, at 9:47 AM, Jim Ross wrote:
Derek Harkness wrote:
Is it better to setup lots of small print servers or one big
print server?
I've currently got 1 print server serving up about 55 printers.
All the server does is Samba and CUPS the box has 2 2.8gig P4
xeon, 2 gigs of RAM and a load average of 3. Which is way to
high since users are complaining about slow print performance. I
went with this solution because I didn't like the idea of having
2,3, or 4 servers just for printing but now I'm wondering if
having multiple boxes isn't the better solution. The other
thought I had was splitting the box by moving cups to it own server.
Any opinions,
Derek
I've got 25 print queues on a similar server at DTE without a speed
problem. I'm suspect in your case students are dumping some huge
print jobs on it. You've probably seen this tool before, but if
you haven't, it's what I use to look at the system, http://
dag.wieers.com/home-made/dstat/, which pulls together output from
what would normal be multiple tools under Linux. So I was
thinking, for a couple minutes, this morning about this. It's
unlikely that CPU or memory is the problem, but more likely that
network or disk has bottlenecked. More likely the disk, since
you're probably 100mb there at the server and you probably require
heavier logging to track and charge for paper, etc. It sounds like
you might have to try adding another box, maybe smaller boxes with
fast disks, given you can't cut logging, students always print too
much, and disks are likely already maxed out. I suspect the disk
is really churning. Too bad you couldn't spool to ram disk, but
it's probably not feasible. Just doing some idle brainstorming a
bit on this early Sunday. I find it helps sometimes.
Jim Ross
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