2009-06-10

Faster JPEGEncoder


// test FF 3.0.11, WinXP, Athlon 64 X2 Dual 3600+ 2GHz
Generating 2048x2048 pixels bitmapData time : 4837ms
JPEG compression time (mx.*) : 18736ms
JPEG size : 2827082
JPEG compression time (mx.*) : 18220ms
JPEG size : 2827082
JPEG compression time (Kyle Lu) : 4682ms
JPEG size : 3529754
JPEG compression time (Kyle Lu) : 4722ms
JPEG size : 3529754
JPEG compression time (bytearray.org) : 3156ms
JPEG size : 2827082
JPEG compression time (bytearray.org) : 3149ms
JPEG size : 2827082
JPEG compression start...
JPEG compression time (alchemy async) : 1864ms
JPEG size : 1647760
JPEG compression start...
JPEG compression time (alchemy async) : 1834ms
JPEG size : 1647760
JPEG compression time (alchemy sync) : 1418ms
JPEG size : 1647760
JPEG compression time (alchemy sync) : 1657ms
JPEG size : 1647760
JPEG compression time (alchemy sync) : 1591ms
JPEG size : 1647760
TS6: time: 1500 len: 2409241
TS8: time: 1078 len: 1412897

// test IE8, Win XP, Core 2 Quad, Q9550 2.83GHz
Generating 2048x2048 pixels bitmapData time : 2698ms
JPEG compression time (mx.*) : 9205ms, size : 2825770
JPEG compression time (Kyle Lu) : 2189ms, size : 3528872
JPEG compression time (bytearray.org) : 1928ms, size : 2825770
JPEG compression time (alchemy async) : 2881ms, size : 1648511
JPEG compression time (alchemy sync) : 792ms, size : 1648511
TS6: time: 958, len: 2409241
TS8: time: 628, len: 1412897


// test Google Chrome 2.0.172.31, Win XP, Core 2 Duo T6570 2.1GHz
Generating 2048x2048 pixels bitmapData time : 3836ms
JPEG compression time (mx.*) : 10941ms, size : 2825770
JPEG compression time (Kyle Lu) : 2991ms, size : 3528872
JPEG compression time (bytearray.org) : 2638ms, size : 2825770
JPEG compression time (alchemy async) : 2644ms, size : 1648511
JPEG compression time (alchemy sync) : 1127ms, size : 1648511
TS6: time: 1250 len: 2409241
TS8: time: 843 len: 1412897

// test 4 FireFox 3.0.11, Win Server Web 2007, Core 2 Duo E6550 2.3GHz
Generating 2048x2048 pixels bitmapData time : 3243ms
JPEG compression time (mx.*) : 10946ms, size : 2825770
JPEG compression time (Kyle Lu) : 3050ms, size : 3528872
JPEG compression time (bytearray.org) : 2353ms, size : 2825770
JPEG compression time (alchemy async) : 1345ms, size : 1648511
JPEG compression time (alchemy sync) : 955ms, size : 1648511
TS6: time: 1153 len: 2409241
TS8: time: 756 len: 1412897


// test 3 Google Chrome, WinXP, Atom 1.6 High Performance
Generating 2048x2048 pixels bitmapData time : 17806ms
JPEG compression time (mx.*) : 40320ms, size : 2852239
JPEG compression time (Kyle Lu) : 9290ms, size : 3564207
JPEG compression time (bytearray.org) : 6617ms, size : 2852239
JPEG compression time (alchemy async) : 4133ms, size : 1672552
JPEG compression time (alchemy sync) : 2810ms, size : 1672552
TS6: time: 3700 len: 2409241


// test 1 FF 3.0.5 , WinXP, HP Celeron D 3GHz

Generating 2048x2048 pixels bitmapData time : 5489ms

(mx.*) : 17350ms, size : 2851143

(Kyle Lu) : 4259ms, size : 3562756

(bytearray.org) : 3391ms, size : 2851143

(alchemy async) : 1871ms, size : 1671339

(alchemy sync) : 1349ms, size : 1671339

TS6: time: 2000ms len: 2409241



// test 2 Google Chrome 2.0.172.23, Win Vista, Celeron Mobile 1.8GHz


Generating 2048x2048 pixels bitmapData time : 4314ms

JPEG compression time (mx.*) : 16354ms, size : 2861525

JPEG compression time (Kyle Lu) : 4144ms, size : 3572825

JPEG compression time (bytearray.org) : 3289ms, size : 2861525

JPEG compression time (alchemy async) : 2187ms, size : 1670411

JPEG compression time (alchemy sync) : 1302ms, size : 1670411

TS6: time: 1552 len: 2409241

TS8: time: 1009 len: 1412897

IrfanView: 8192x8192 = 6000ms -> 2048x2048 = 400ms

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