Dne 12.4.2011 01:22, Radhya sahal napsal(a):
> Thanks Mr Nathan Boley ,
> i want these equations to solve thsese equtions of parameters and total
> time in order to get each paramter formula
> i need these formula in my experiments is very important to know the
> rate for each parameter in total
..
From: Nathan Boley
To: Radhya sahal
Cc: pgsql-performance group
Sent: Mon, April 11, 2011 4:09:07 PM
Subject: Re: [PERFORM] how explain works
> how explian works as math equations to estimate cost with constatn query
> parameters
> such as cpu_tuple cost ,random page co
> how explian works as math equations to estimate cost with constatn query
> parameters
> such as cpu_tuple cost ,random page cost ...etc
> i want maths expression in order to know how these parameters will effect
> in cost ???
The expressions are complicated, and they are certainly not linear
Dear ,all
plz could any one help me !!!
how explian works as math equations to estimate cost with constatn query
parameters
such as cpu_tuple cost ,random page cost ...etc
i want maths expression in order to know how these parameters will effect in
cost ???
please any one can help me ??
R
