" Basic script - long loop"
| code |
code := 'x = 0
FOR i = 1 TO 10000
x = x + 1
NEXT
RETURN x'.
^self print: 'Long loop took='
,[ Interpreter execute: code ] ms
,#ms
|
Time spent on execution of long loop script
| Environment | device | O.S. | ||
| coco8 | iPad 3.5 | iOS 9.3.1 | 101000 | 101s to 108s |
| chrome | iPad 3.5 | iOS 9.3.1 | 107600 | 107s to 124s |
| safari | iPad 3.5 | iOS 9.3.1 | 107800 | 107s |
| coco8 | iPhone 6s | iOS 9.3.1 | _60000 | 60s to 77s |
| chrome | iPhone 6s | iOS 9.3.1 | _54500 | 54s |
| safari | iPhone 6s | iOS 9.3.1 | _65500 | 65s |
| chrome | sony xperia | android 5.1 | _34300 | 34s |
| chrome | Samsung Tab A | android 5.0 | _35600 | 35s |
| safari | mac (desktop) | osx 10.11 | _29740 | 29s to 42s |
| MS Edge | pc (desktop) | win 10 | _18700 | 18s to 19s |
| chrome | mac (desktop) | osx 10.11 | __3700 | 3s to 4s |
| chrome | pc (desktop) | win 10 | __5900 | 6s |
The same image was used to run the test in multiple execution environments.
As the script use pure smalltalk to run, the comparative of execution times reveal the differences of the VM performance (and hardware) in each case.
Numbers show:
- the platform defines the order of magnitude for execution time
- iPad (32bits) run much slower than iPhone(64bits)
- coco8 execution is as fast as chrome execution on iOS (running in a web page)
- speed has no relation with our native framework in this case
- desktop versions are much faster, but safari (that uses same VM than coco8) are much slower than chrome on desktop (also in OSX)
- we have better numbers in android (1/2 ratio) but also reveal slow execution for the script
Traces of execution
The slow execution speed in mobile platforms do not mean we canīt do better on s8 side. So I started an analysis of methods activated by the framework to see if we can make it run faster, modifying low level methods used by the framework.To create a QR code image in this swiki pointing to a page, add an <IMG src="theURL"> HTML element in the page where "theURL" is the result of evaluating the following expression in a workspace UI8Workspace new qrFor: 'SwikiCodeRobot @> 210' width: 300 height: 300 |