topic Re: MAXUSERS change without using SAM in Operating System - HP-UX

MAXUSERS change without using SAM

hpuxhelp — Thu, 09 Oct 2003 19:20:40 GMT

how can I change the maxuser paramter without using SAM?

is this require a reboot?? since it creates a change in the kernel

Re: MAXUSERS change without using SAM

Bill Hassell — Thu, 09 Oct 2003 19:29:02 GMT

MAXUSERS is not a kernel parameter at all. It is a formula macro that affects about 4-5 different parameters. NOTE: MAXUSERS has NOTHING to do with the number of user that can log onto the system. SAM is the tool that makes the calculations which are then translated into a numeric value. All of the parameters that use MAXUSERS will require a reboot once they are changed.

Re: MAXUSERS change without using SAM

KCS_1 — Thu, 09 Oct 2003 19:40:23 GMT

Hi,

why you change the parameter without using SAM?? I think this way is the best to change that.

However, you can change that by command on prompt.

Look at 'kmtune' manpage

(hp-ux 11i)
#kmtune -l |more

Parameter: maxusers
Current: 32
Planned: 32
Default: 32
Minimum: -
Module: -
Version: -
Dynamic: No <---- rebooting required

# kmtune -s maxusers = new_value

# kmtune -l | grep -i maxusers
Parameter: maxusers
Planned: (100+16*MAXUSERS)
Default: (100+16*MAXUSERS)
Planned: (16*(NPROC+16+MAXUSERS)/10+32+2*(NPTY+NSTRPTY+NSTRTEL))
Default: (16*(NPROC+16+MAXUSERS)/10+32+2*(NPTY+NSTRPTY+NSTRTEL))
Planned: ((NPROC+16+MAXUSERS)+32+(2*NPTY))
Default: ((NPROC+16+MAXUSERS)+32+(2*NPTY))
Planned: (20+8*MAXUSERS)
Default: (20+8*MAXUSERS)

As you see above output, some of kernel parameters related. that's why you need reboot system for making new kernel as well.

Have a good day!

-Best Regards

Patrick

Re: MAXUSERS change without using SAM

Steven E. Protter — Thu, 09 Oct 2003 19:42:33 GMT

kmtune -s maxuser=128

# cd /stand/build
# /usr/lbin/sysadm/system_prep -s system
# vi system (make your changes)
save file
# /usr/sbin/mk_kernel -s system
# /usr/sbin/kmupdate

SEP

Re: MAXUSERS change without using SAM

hpuxhelp — Thu, 09 Oct 2003 19:45:05 GMT

after changing the paramter , I did the reboot...once this is up, the new kernel will take into affect??

Re: MAXUSERS change without using SAM

KCS_1 — Thu, 09 Oct 2003 19:51:34 GMT

Yup! Absolutly!

after building a new kernel to moved new one and will be rebooted with taking effection.

In my case, I always remain two copy files that /stand/system and /stand/vmunix such as stand.copy, vmunix.copy

Re: MAXUSERS change without using SAM

Steven E. Protter — Thu, 09 Oct 2003 20:08:14 GMT

If you copied the new kernel to /stand/vmunix the and booted, the machine now reflects the changed value.

kmtune to check it.

SEP

Re: MAXUSERS change without using SAM

hpuxhelp — Thu, 09 Oct 2003 20:10:51 GMT

when I did kmtune -d
i saw this
Parameter Current Dyn Planned Module Version
===============================================================================
maxusers 32 - 128
msgmnb 16384 Y 65536

does this mean the new changes didn't take place?? why it said the current is still at 32 instead of 128???

Re: MAXUSERS change without using SAM

KCS_1 — Thu, 09 Oct 2003 20:45:00 GMT

Ah! you didn't get the next procedure to building for new kernel. right??

------------------------------------------
#kmtune -s maxuser=128
# cd /stand/build
# /usr/lbin/sysadm/system_prep -s system
# /usr/sbin/mk_kernel -s system
# /usr/sbin/kmupdate
--------------------------------------------
above Steven has posted next procedure how to make this.

Re: MAXUSERS change without using SAM

KCS_1 — Thu, 09 Oct 2003 20:46:43 GMT

Afer then , go to the Reboot!!

# kmtune -q maxusers

128-128 (affected the value)