topic NUMA setting with 4 processors in QlikView

NUMA setting with 4 processors

Mon, 26 Jan 2026 18:19:17 GMT

Hi All,

I have a severly under performing server.

I have been advised that having NUMA enabled can negatively impact Qlikview performance. So I approached the hosts of our dedicated server and asked for it to be disabled - they have stated that because we have 4 CPUs this cannot be disabled. Does this ring true? Can anyone shed some light on this for me?

Cheers,

GPC

Re: NUMA setting with 4 processors

Thu, 15 May 2014 14:06:43 GMT

I think this may help:

Performance QlikView server

Quick tips #8 - Server Settings For Best Performance

http://www.qlik.com/us//~/media/Files/resource-library/global-us/direct/datasheets/DS-Technical-Brief-Impact-of-NUMA-on-…

regards

Darek

Re: NUMA setting with 4 processors

Thu, 15 May 2014 14:18:15 GMT

Hi,

What kind of Server brand / bios is being used?

Probably can find out by making search on asked information.

But the number of Cpu´s should not matter if numa can be disabled or not

Re: NUMA setting with 4 processors

Thu, 15 May 2014 14:27:08 GMT

Thanks Dariusz,

So what I can read from those is that my version (11.2 SR5) is not impacted by NUMA due to the built-in workaround.

On that note, should I not worry too much about that setting?

Cheers,

GPC

Re: NUMA setting with 4 processors

ergustafsson — Mon, 19 May 2014 13:35:08 GMT

Hi Gareth,

A hardware switch is better than software. I advice you to test for yourself an "before and after" test with this option to see how it impacts your environment.

Regards,

Erik