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1699
January 19th, 2011 06:00
max number of nodes per IPAM domain
I know, this is a bit like glazing into the crystal ball, but how to determine the maximum number of nodes to add to an IPAM (version 7) domain?
Machine is a quad CPU sparc @ 2.1 GHz, 16 GB RAM and polling cycle is set to 3 minutes. How would I notice "overload"?
Thanks & regards,
Gunter
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FredericMeunier_0588be
143 Posts
1
January 19th, 2011 14:00
Hi Gunter,
there is no easy answer for this. It's not just about nodes, but all managed instances (ports and interfaces are obviously a major part of them) count.
There is some numbers that you can use from :
sm_tpmgr -s --size
and
sm_tpmgr -s --show-dm-processes
unfortunately, with these 2 commands, you won't have any historical data.
Now (sorry for the sale speech - full disclosure), you can use APG and the Solution Pack for Ionix to collect all these metrics (and much more) and look at historical reports for trending and capacity planning purpose. All out-of-the-box.
HTH,
--Fred
== Monitor your Smarts environment using APG Solution Pack for Ionix ==
Frederic Meunier
Solutions Watch4Net Inc
APG & Smarts InCharge integration
http://www.watch4net.com
gunter3
10 Posts
0
January 19th, 2011 22:00
Thanks a lot for your help. This will give me a starting point to look at. Just from looking at system parameters the server doesn't seem overloaded. We decided to merge some domains for maintenance reasons, but obviously we do not want to miss events because of that.
Regards,
Gunter
bkuhhirte
52 Posts
1
January 31st, 2011 12:00
Gunter,
As a memory resident application the number of devices is going to be driven largely by two factors:
1. The tolerable amount of time for discovery of those systems
2. The total number of managed ports and interfaces.
In most router-centric environments, we see a ~10:1 ratio between managed P&I and devices. In switched environments (lacking the hosts), it is more like 20-30:1. We normally recommend no more than 25K in an AM/PM server and typically 50-75K in an AM-only server. That means you should manage between 5000 and 7500 devices in AM-only mode in a router-centric environment. After that you will either run out of memory, or the discovery will become painfully slow.
We have a set of spreadsheets that can be used to help size that out in more detail.
Regards,
Bill
gunter3
10 Posts
0
February 1st, 2011 00:00
Thank you for that information.
We are currently far, far away from any of the limits mentioned, so I think I can stop worrying about them.
Regards,
Gunter