[geos-devel] Performance of GEOS

[Norman Vine]

Martin Davis writes:

> Ok, let us know what you find out.

A little better - but not what I was hoping for

This is on a 733mhz PIII
Cygwin gcc 3.2

Norman

Code as in CVS

n Pts: 1000   Executed in 1000
# overlapping MCs: 44
# segment intersection tests: 4
n Pts: 2000   Executed in 4000
# overlapping MCs: 44
# segment intersection tests: 7
n Pts: 3000   Executed in 10000
# overlapping MCs: 44
# segment intersection tests: 4
n Pts: 4000   Executed in 22000
# overlapping MCs: 44
# segment intersection tests: 5
n Pts: 5000   Executed in 92000
# overlapping MCs: 44
# segment intersection tests: 7
n Pts: 6000   Executed in 156000
# overlapping MCs: 44
# segment intersection tests: 6
n Pts: 7000   Executed in 224000
# overlapping MCs: 44
# segment intersection tests: 4
n Pts: 8000   Executed in 315000

< manually stopped test before completion >


My test  code with no pure virtuals and inlined code

n Pts: 1000   Executed in 0
# overlapping MCs: 44
# segment intersection tests: 4
n Pts: 2000   Executed in 2000
# overlapping MCs: 44
# segment intersection tests: 7
n Pts: 3000   Executed in 4000
# overlapping MCs: 44
# segment intersection tests: 4
n Pts: 4000   Executed in 8000
# overlapping MCs: 44
# segment intersection tests: 5
n Pts: 5000   Executed in 16000
# overlapping MCs: 44
# segment intersection tests: 7
n Pts: 6000   Executed in 64000
# overlapping MCs: 44
# segment intersection tests: 6
n Pts: 7000   Executed in 110000
# overlapping MCs: 44
# segment intersection tests: 4
n Pts: 8000   Executed in 148000
# overlapping MCs: 44
# segment intersection tests: 5
n Pts: 9000   Executed in 194000
# overlapping MCs: 44
# segment intersection tests: 5
n Pts: 10000   Executed in 255000