Re: Windows shared_buffers limitations

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Gregory Stark <stark(at)enterprisedb(dot)com>
Cc: "Rainer Bauer" <usenet(at)munnin(dot)com>, pgsql-hackers(at)postgresql(dot)org
Subject: Re: Windows shared_buffers limitations
Date: 2008-03-27 19:45:33
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Gregory Stark <stark(at)enterprisedb(dot)com> writes:
> One thing which comes to mind is that it's possible Windows is swapping out
> shared memory making having large shared memory segments dangerous on that
> front.

This is a hazard on most Unixen as well. Windows may just be a bit more
aggressive about it. Now that larger shared memory blocks are usually
a win, we need to put more effort into telling the kernel to lock the
shared memory block into RAM ...

regards, tom lane

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