Is there a way to determine if a bigger licence is required ?

[wanah]

On one of our servers with about 6TB monthly bandwith, we currently have only a 2 CPU lsws licence.

When we manually check this serveur, we rarely see a litespeed process use more than 30% of a CPU core.

Apart from setting up a monitoring solution to monitor litespeed process utilisation, is there a way to tell if sometimes http requests are slowed down because of needing a larger licence ? (maybe something in litespeed's logs that would allow us to know a request was delayed due to over usage of existing CPU cores).

It would be nice if there was something like this directly in litespeed's web interface. Maybe a warning message with "Your webserver could benefit from being able to use more cores".

It seems that in our situation, the 2 core licence is enough for a server with 20 cores (40 threads) as most of the CPU is used by PHP and MySQL.

 

[Pong]

LiteSpeed indeed uses very small resources. You may just monitor the percentage of lightspeed process using to give your hint.

On the other hand, we do see some hosting company want to make their server extremely faster by saving every ms. More CPU license did help with this situation.

 

[wanah]

We do want to make our hosting as fast as possible. It's fast as it is and if you think that using 4 cores instead of 2 will improve speed even when the 2 cores are only using a maximum of 30% each then we will upgrade to 4 cores.

Can we downgrade if we see no difference ?

 

[wanah]

Answering my own question

I've just downgraded a licence on another server and upgraded the licence on this server

 

[Pong]

yes, you can upgrade or downgrade at any time.

A case showing more benefits on higher-core-license was: one user needed better SSL performance and http/2 support on cPanel. He did various tests and found more cores will double of https capacity.