"Andrew Hammond" <[EMAIL PROTECTED]> wrote
> Also, are there any other (simple for now) things I
> should look at in the process?

The shared memory estimiation logic is in
ipc/ipci.c/CreateSharedMemoryAndSemaphores(). If you want to get an accurate
number, you need to consider:
(1) different PostgreSQL versions;
(2) if EXEC_BACKEND is defined;
(3) other defines like BLCKSZ, NUM_SLRU_BUFFERS, etc.

So a better way IMHO is not to use perl script -- you have to reinvent the
shmem estimation logic. You can put the logic in a separate function in
backend and export it.


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