Value of shmmni
Currently we have a system that has 4800 shared memory segments by doing a ipcs -m. I wrote a perl script to add up the nattch column and that is where the 4800 number came from. The default value is 4096. I can increase this on the fly without a reboot and I can add it to the /etc/sysctl.conf file for future use.
My question is what happens to the system when you go over the alloted value of shmmni? Will this effect logins, software etc etc?
I don't understand how it can over a max value unless defunct processes are counted in the ipcs -m command but are not actually a count.
Any help would be appreciated.
Last edited by d072330; 11-11-2010 at 02:44 PM.