Modifying kernel shared memory

[doug-x07]

I want to modify my kernel shared memory parameters as the defaults are kind of low for my needs. Not an expert on kernel hacking but I assume I have to reset shmall and shmmax in /etc/sysctl.conf to the size I want (128m instead of deault 32m).

Can anyone with any experience doing this warn me of any potential dangers? I take it sysctl.conf is parsed on startup. Is it possible to compile the values I want directly into the kernel instead?

I also need to check the number of semaphores, saw the sem values file but can't work out the map. BTW I'm running Gentoo 2.4.19 with a lot of available memory. Thanks for any suggestions or pointers on the subject.
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bless $posters; }