topic Re: Itanium kernel tuning in Integrity Servers

Itanium kernel tuning

Shane Russell — Wed, 26 Sep 2007 09:15:08 GMT

Hi,

I recently purchased 6 new Itanium servers and I'm looking for kernel tuning tips.

I see that memory utilization is high ... up to 70% & 80% just during the build stage. I have 2GB in the server at the moment.

Any tips welcome

regards,
Shane

Re: Itanium kernel tuning

Sameer_Nirmal — Wed, 26 Sep 2007 22:34:15 GMT

Can you tell us what models of the Integrity servers you have?
Where do you see the memory utilization stats?
What OS version you have and patch level?

Re: Itanium kernel tuning

Shane Russell — Thu, 27 Sep 2007 02:43:56 GMT

Thanks Sameer,

The server model is ia64 hp server rx2660

I am using Glance & Performance Manager to see the memory utilization.

The OS version is B.11.23 with June 2007 patches.

regards,
Shane

Re: Itanium kernel tuning

Mike Shilladay — Thu, 27 Sep 2007 03:08:01 GMT

Hi Shane,

This downloadable pdf is great for a quick guide to perfomance on HP-UX. On 11.23 a lot of the parameters are dynamic, which removes a lot of hardwork.

http://h21007.www2.hp.com/portal/download/files/unprot/devresource/Docs/TechPapers/UXPerfCookBook.pdf

If you want to really get serious, then HP do a book on performance tuning, though I don't know if it is still published. The ISBN is 0131027166, Publisher - Prentice Hall

hope that helps

Mike.

Re: Itanium kernel tuning

rick jones — Thu, 27 Sep 2007 12:04:11 GMT

Glance is likely going to be telling you that much of thge memory utilization is buffer cache, which I suspect one or more of the pointers given thusfar will tell you your to tune. By default, HP-UX 11.23 will use up to 50% of the RAM for filesystem buffer cache.