Nagios Support Forum

Well, I upgraded to the 1.2 version and we're still having some problems. It is running better with the upgrade, but still runs slowly if we have too many people looking at the performance graph pages at the same time.

We get asked all the time how well our software scales, so at the risk of being embarrassed how many is too many?

How many CPU's does your Nagios XI host have?

We've got two CPU's on this system.

mmestnik wrote:We get asked all the time how well our software scales, so at the risk of being embarrassed how many is too many?

The problem is that we have some pages with 8 performance graphs all showing at the same time. One person can cause the server significant changes. Before the 1.2 upgrade, I noticed we were having problems. We're upgrading our system to something even bigger this next week (4 CPUS, 16 GB ram, 3+ GHZ processor) to see if we can help the problem a little.

We would also be interested in making our minimum requirements more accurate. Any information you could provide would be helpful. Thank you.

mmestnik wrote:We would also be interested in making our minimum requirements more accurate. Any information you could provide would be helpful. Thank you.

I'll see what I can do.

We have been running the VM with 2 x CPU's.

The ESX server it is running on has dual Intel Xeon X5365 @ 3.00GHz.

We will be installing some new ESX servers in about 4 weeks. These will be dual Intel Xeon X5680 @ 3.33GHz. I think this is a jump in 2 generations of CPU's.

I am very interested to see if the newer CPU's with the newer virtualisation technologies has any direct impact on the performance of the Nagios XI host.

I need to open this one back up again. Now that Nagios is getting more popular in our business, more people log into it every day to see how their systems are doing. We are experiencing slowness on our server again. The new graphs are becoming really popular here as they have shown us several problems in the company. The problem is that I need a way to adjust the refresh rates or some way to split out apache to another system in order to minimize the problems.

Any updates on this?

We've now received our new ESX server. It has dual Intel Xeon X5680 @ 3.33GHz

The existing ESX server has dual Intel Xeon X5365 @ 3.00GHz.

After migrating my Nagios XI VM over to the new server the performance improvement is very noticable.
The graph you are looking at is the Nagios XI VM CPU usage over 1 week. You can see how much less CPU is used after the VM is migrated to the new ESX host.

The XI VM has:

• 3 x Virtual CPU's
  274 Hosts
  1928 Services

The screen draw times when looking at performance graphs are noticably faster.

It's very clear, the new CPU's with the latest virtualisation technologies have a significant impact on how well the VM's run.

You can see that for a server doing exactly the same task on two seperate CPU generations there are noticable performance improvements.


This highlights how easy virtualisation allows you to take benefit of newer technologies without having the complexities of migrating from old hardware to new. Massive savings in labour.