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List:       postgresql-general
Subject:    Re: [GENERAL] Performance tuning for linux, 1GB RAM, dual CPU?
From:       snpe <snpe () snpe ! co ! yu>
Date:       2001-07-12 16:49:27
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> Another factor, not under our control, is that if the shared memory
> region gets too large the kernel may decide to swap out portions of
> it that haven't been touched lately.  This of course is completely
> counterproductive, especially if what gets swapped is a dirty buffer,
> which'll eventually have to be read back in and then written to where
> it should have gone.  This is the main factor behind my thought that you
> don't want to skimp on kernel disk buffer space --- any memory pressure
> in the system should be resolvable by dropping kernel disk buffers, not
> by starting to swap shmem or user processes.
>

You can lock shared memory for this problem ?


regards
haris peco

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