System parameter shmmax

From: Sabrina Lautier (slautier@amadeus.net)
Date: Sat Jan 10 2004 - 20:05:53 EST


Admins,

Developers here ask me to increase the value of the system parameter shmmax
(maximum amount of memory that can be addressed in a shared memory segment)
to 1GB.
Its actual value is 512MB.

512MB was already a lot for me so 1GB is just so huge !
How does this sound to you ? Is this value big ?

As the server conserved has already poor performances (way too loaded),
I've tried to tell them that they may have serious Pb to keep working on
it...

I'm looking for documentation to be able to give them good explanation.

Can some of you give some interesting links to shared memory related
information or inform me about what you know ?

Thanks for your help.

Sabrina
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