On Sun, 24 Dec 2000, Joe Conway wrote:
> Linux
>
> The default shared memory limit (both SHMMAX and SHMALL) is 32 MB in 2.2
> kernels, but it can be changed in the proc file system (without reboot). For
> example, to allow 128 MB:
>
> $ echo 134217728 >/proc/sys/kernel/shmall
> $ echo 134217728 >/proc/sys/kernel/shmmax
> You could put these commands into a script run at boot-time.
On redhat 6.2 I know that you can use /etc/sysctl.conf to do this as well.
Just add this to /etc/sysctl.conf.
kernel.shmall = 134217728
kernel.shmmax = 134217728
After this, your tunables will be restored every time that the system boots.
Mike