topic Re: About the semaphores in Operating System - Linux

About the semaphores

peterchu — Thu, 02 Dec 2004 01:43:59 GMT

How do I know the the existing SEMMSL and SEMMNS setting in my RH system ? thx

Re: About the semaphores

Ivajlo Yanakiev — Thu, 02 Dec 2004 03:10:36 GMT

Hi,
read this link:
http://traduc.postgresqlfr.org/pgsql-fr/kernel-resources.html

Re: About the semaphores

Huc_1 — Thu, 02 Dec 2004 05:19:38 GMT

To change it on the active kernel

$ echo 'your value' >/proc/sys/kernel/shmall
$ echo 'your value' >/proc/sys/kernel/shmmax

To change it so it survives the next reboot edit /etc/sysctl.conf and modify the following

kernel.shmall = 'your value'
kernel.shmmax = 'your value'

Hope this helps.

Jean-Pierre

Re: About the semaphores

NiCK_76 — Thu, 02 Dec 2004 05:49:13 GMT

use "sysctl kernel.shmall" to view value of shmall
and use
"sysctl -w kernel.shmall=111111" to set value of shmall