David,
I just ran into the same web access problem you hit. On a customers
site we have 2 separate collectors and they were hitting the central
zeo server with lots of little fetches of objects. I looked at top
on the central zenoss server and it was quiet as a mouse... Load was
less than 0.50, cpu was essentially idle, and you wouldn't think
there was a problem. netstat -an reported a somewhat large Recv-Q
for some sockets connected to 8100 (zeo).
On the remote collector I set:
cachesize 8000
pcachesize 50
That seemed to reduce the spinning web browser problem I had when
looking at the web UI. Maybe you should *really* increase the
cachesize on your collectors?
On another note ... I'm going to be posting a blog entry tonight
about sending Log4J messages to zenoss using SyslogAppender. I came
up with a ConversionPattern in log4j.properties, a regex for Zenoss
to use to extract the category from the log message to use as the
component, and some code that translates the Log4J log level into an
event severity. I noticed from your sig that you're from the Java
camp (I like to hang out over there as well :)), so I thought you
might be interested in it...
-c
On Apr 27, 2007, at 11:29 AM, David Carmean wrote:
I'm curious how many devices people are monitoring with one zenoss
system?
I've stripped down a zenoss config so that it's essentially doing
only CPU
and ping monitoring; I'm up to 4800 devices with 46,000 resultant
RRDs.
This is a 4-way Xeon 3Ghz IBM X3850 with 10G of RAM. I found that
increasing
zenperfsnmp's cachesize config item from 10,000 to 50,000 didn't
seem to
help it handle more than 2500 or so devices in one single instance,
so I've
got 3 performance monitors configured/running on this machine.
My biggest problem right now, and it's more of just an annoyance,
is that
web access can sometimes seem to take forever. I'm looking forward
to a
release with the new zodb optimization that was mentioned a while ago.
--
David Carmean Network Appliance, Inc
Infosystems Architect, 495 E. Java Drive
Java (Sunnyvale) Engineering Lab Services Sunnyvale, CA 94089
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