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Author How much shared memory am I using please?
adey

2005-09-13, 3:23 am

A "free" command on my linux server returns the following:-

total used free shared buffers cached
Mem: 4077400 3958256 119144 0 104208 1551116
-/+ buffers/cache: 2302932 1774468
Swap: 2000084 4744 1995340

Postgres shared_buffers is set to 16384

SHMMAX is set to 256554432 bytes (245mb)

Why free show "shared" as 0 consistently please, and am I really not sharing
any memory?

I'm trying to tune my SHMMAX parameter to provide an optimal shared memory
segment size in which Postgres Shared_buffers can be optimised.

How do I do this please?

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