2016-01-19 11:34 GMT+01:00 Dimitris Chloupis <kilon.alios@gmail.com>:

most likely fuel, since it stores your live object as is.

I like fuel but the fact that I may be limited by incompatible versions is a game stopper for me. I am ok with new version between incompatible with old one but there must be some backward compatibility to any format I use. Or else I end up worrying about things I should not be worrying about.

You are right. I perform little experiment. Fuel reading is 60% faster than BMP:

Smalltalk garbageCollect; garbageCollect.

r1 := [FileLocator imageDirectory / 'test.bmp' readStreamDo: [ :s |��

s binary.

fromBMP := BMPReadWriter formFromStream: s]] benchFor: 2 seconds.

Smalltalk garbageCollect; garbageCollect.

r2:=[FileLocator imageDirectory / 'test.fuel' readStreamDo: [ :s |

s binary.

fromFuel := (FLMaterializer newDefault materializeFrom: s) root]] benchFor: 2 seconds.

{ r1. r2 } "an Array(a BenchmarkResult(2,199 iterations in 2 seconds 2 milliseconds. 1,098 per second) a BenchmarkResult(5,728 iterations in 2 seconds 3 milliseconds. 2,860 per second))"