Performance of running system

[Shivkumar]

Hey Guys,

Do we need to reboot the hpux 11i system to improve its performance ?

Thanks,
Shiv

[Joseph Loo]

hi,

some of my machines have been running for more than 200 days without rebooting. since they are production servers, the more it needs to be up and running 24 by 7.

performance of a system do not necessary means rebooting and magically everything is ok. it depends on various aspect, i.e. enough hardware, recommended hardware sizing, kernel setting based on applications running on system, etc.


regards.

[A. Clay Stephenson]

Yes, when you install kernel patches or need to build a new kernel. Otherwise, NO.

[Devesh Pant_1]

Unless there is a reason like ACS points out patches or kernel changes or in some cases shared memory segment issues, there should be no reason for you to reboot.

We are not living in a room with windows to get fresh air, are we ? ;-)

thanks
Devesh

[D Block 2]

Shiv-

I agree w/ Joseph + A. Clay + Devesh,

you don't have to reboot - say once a month.. or every so often.

but if you have a planned outage for Patches once every 4 months, this might be a good thing.

there are some situations that require a "forced" or manual reboot due to some issues like: (1) completely exhausted all memory on the box - even SWAP area(s), (2) running out of process slots in the process-table (proc[] kernel table).

but keep an eye on your process table activity..

one minor reason to have a reboot might be that there are too many processes in the proc table.

ps -eaf

if there are too many of these guys (which that take up a slot in the proc[] table in the kernel), then a reboot will clean them out. also, maybe these processes that are defunk'ed are dependent on "shared-memory" segments..

in any event, reboot if your are forced too.. "uptime" is key in any environment today.