About the semaphores

[peterchu]

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

[Ivajlo Yanakiev · Accepted solution]

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

[Huc_1]

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

[NiCK_76]

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