NFILE parameter increased after app changes require 150k!

[PCD_HPUX Group]

NFILE HP-UX 11.23 original parameter set to 100k with about 60k used at any time. After app changes, NFILE had to be increased (500k arbitrarily used) and now we see 140-150k concurrent open file descripters in use on the system at any point in time. App changes cannot be altered at this time.

What impact does this have behind the HP-UX 11.23 scenes to be using 140-150k? What impact is there is setting value to 500k (and could it be set even higher to 900k with memory use being the only constraint - yes?)?

Our shop never has seen this app behavior before so do not know about implications...

Thanks,Jeff.

[James R. Ferguson]

Hi Jeff:

The maximum value allowed is a 32-bit signed integer value equal or greater than twice 'maxfiles_lim'. The 'nfile' value is a number of slots in a kernel table to denote open files so realatively little memory is consumed when increasing it.

Regards!

...JRF...