Re: [HACKERS] Anyone understand shared-memory space usage?

From: Bruce Momjian <maillist(at)candle(dot)pha(dot)pa(dot)us>
To: tgl(at)sss(dot)pgh(dot)pa(dot)us (Tom Lane)
Cc: pgsql-hackers(at)postgreSQL(dot)org
Subject: Re: [HACKERS] Anyone understand shared-memory space usage?
Date: 1999-02-21 19:28:52
Message-ID: 199902211928.OAA19937@candle.pha.pa.us
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Does the bottom of the backend flowchart help?

> It used to be that Postgres' shared memory was sized on the basis of
> the hard-wired MaxBackendId constant. I have altered things so that
> it is sized on the basis of the actual -N switch given to the postmaster
> at postmaster start time. This makes it a lot easier to stress the
> algorithm ;-), and what I find is that it ain't too robust.

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