> OK, different question:
> Why would anyone ever set full_page_compress = off?

The only reason I can see is if compression costs us CPU but gains RAM & 
I/O.  I can think of a lot of applications ... benchmarks included ... 
which are CPU-bound but not RAM or I/O bound.  For those applications, 
compression is a bad tradeoff.

If, however, CPU used for compression is made up elsewhere through smaller 
file processing, then I'd agree that we don't need a switch.


Josh Berkus
PostgreSQL @ Sun
San Francisco

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