topic Re: making auto tunable - filecache_max in Operating System - HP-UX

making auto tunable - filecache_max

rveri — Tue, 13 Jul 2010 22:09:58 GMT

HiExperts,

Please advise how to make the tunable "filecache_max" to auto tunable:

# kctune| grep filecache
filecache_max 16336814080 50% Imm (auto disabled)
filecache_min 1633681408 Default Auto

Thanks in adv,

Re: making auto tunable - filecache_max

Dennis Handly — Tue, 13 Jul 2010 22:48:16 GMT

If you set it to the default, it should be auto:
kctune filecache_max=default

Re: making auto tunable - filecache_max

rveri — Wed, 14 Jul 2010 03:44:22 GMT

Dennis Thank you.

Re: making auto tunable - filecache_max

Kranti Mahmud — Wed, 14 Jul 2010 08:34:37 GMT

Hi rveri,

If filecache_min is currently set to default, the following is acceptable:

# kctune filecache_max=Default

# kctune filecache_max=40%

Ref: http://docs.hp.com/en/B2355-60130/filecache_max.5.html

Rgds-Kranti

Re: making auto tunable - filecache_max

rveri — Wed, 14 Jul 2010 18:51:08 GMT

Kranti,
Thanks for the details.

Re: making auto tunable - filecache_max

rick jones — Wed, 14 Jul 2010 23:46:53 GMT

Just to be clear, you aren't asking for the tunable to be automagically adjusted in response to changing system demands right?

Re: making auto tunable - filecache_max

Dennis Handly — Thu, 15 Jul 2010 03:15:21 GMT

>Rick: you aren't asking for the tunable to be automagically adjusted in response to changing system demands right?

Isn't that what "auto" means?
canauto is "y" for those.

Unless it is only adjusted upon reboots, which seems to defeat some of the "auto".