Report function is hanging

[axvers]

Hi support,

Want to check that if Nagios XI has a recommended upper limit of hosts/services number per node?

Because we're recently facing this kind of performance issue: every time I (accidentally) click the report button, the PHP hangs.

Nagios XI version: 5.6.2
CPU/Memory/Disk: 4 core/16GB/400GB
hosts: 700
services: ~35000

Is there any solution for this?

[benjaminsmith]

Hi @azvers,

Because we're recently facing this kind of performance issue: every time I (accidentally) click the report button, the PHP hangs.

I believe you system is hitting the upper limits on the default PHP settings and that's why its hanging. You'll want to bump up the max_input_vars, memory_limit, max_execution_time and max_input_time in the php.ini file.

We have a article to guide you through the process on our knowledge-base at:
Nagios XI - Optimizing The PHP Settings File

Let us know if this resolve the issue for you.

[axvers]

Hi support,

I changed these properties in the /etc/php.ini file:

max_input_vars: 18000
memory_limit: 4096M
max_execution_time: 180
max_input_time: 180

(note: the /etc/php.ini is the only php.ini I found under /etc dir.)

And turned out that the response time of nagios xi web is much faster than before.

But unfortunately, the report function still needs a lot of time to consume data to generate output.

It took around 200 seconds (yes) to show the Availability report.

Is there further tuning I can do?

Such as ulimits?

The DOS concern is not an issue so far, I would like to allow as more resources as possible for this nagios XI server.


(Note: This server's memory is 32 GB, instead of 16. The previous info I provided was wrong.)

[scottwilkerson]

Is there further tuning I can do?

With ~35000 checks, the limiting factor for the Availability Report is going to be disk speed, there really isn't anything you can do beside migrate to faster disks (think raid array of SSD drives) to increase the performance.

[axvers]

OK!

Thanks for help!

[scottwilkerson]

OK!

Thanks for help!

No problem