Bruce, Is there remarks along these lines in the performance turning section of the docs? Based on what's coming out of this it would seem that stressing the importance of leaving a notable (rule of thumb here?) amount for general OS/kernel needs is pretty important.
Greg On Tue, 2002-10-08 at 09:50, Tom Lane wrote: > (This is, BTW, one of the reasons for discouraging people from pushing > Postgres' shared buffer cache up to a large fraction of total RAM; > starving the kernel of disk buffers is just plain not a good idea.)
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