Re: Initial prefetch performance testing

On Wed, 2008-09-24 at 17:42 +0300, Heikki Linnakangas wrote:

> Yeah. Nevertheless I like the way effective_spindle_count works, as 
> opposed to an unintuitive "number of blocks to prefetch" (assuming the 
> formula we use to turn the former into latter works). Perhaps we should 
> keep the meaning the same, but call it "effective_io_concurrency"? 
> Something that conveys the idea of "how many simultaneous I/O requests 
> the I/O subsystem can handle", without referring to any specific 
> technology. That concept applies to SANs and RAM drives as well.

You've spoiled all the fun now with a good suggestion.

I was looking forward to the Jules Verne-like nostalgia of the other
suggestion over the years to come.

-- Simon Riggs           www.2ndQuadrant.comPostgreSQL Training, Services and Support