Le 12/03/2016 18:47, Aliaksei Syrel a ��crit :
> Hi
>
> At some point I got a feeling that actual Delay time is longer than
> expected. It is especially visible on small delays less than 100ms
> (otherwise difference is < 1%).
>
> Inline image 1
> Documentation says that _Delay waits approximately_ for specified amount
> of time. However, according to experimental data an actual difference is
> always positive with the value around 1.5-2 seconds. It is actually
> strange where such a constant difference, independent from delay length,
> comes from.
> Inline image 2
> To conclude, if you want to wait more precisely you need to create
> delays with duration 1.5 seconds less than expected. Also it would be
> interesting to test on different hardwares to make sure that difference
> stays constant (around 1.5-2s)
>
> I used the following script to gather data and save in .csv file
> http://ws.stfx.eu/DSCLG2ON0VBI
>
> Tested on:
> Pharo: #50636
> Spur-VM: #463
> OS: Mac OS Yosemite
> CPU: Intel Core i7 2.39 GHz
>
> Cheers,
> Alex
>

If you wish to compare I join a csv. This is my setup:

Image
-----
C:\Users\JeCisC\AppData\Roaming\Pharo\images\Common tools-Pharo 5.0
(beta)-26\Common tools-Pharo 5.0 (beta)-26.image
Pharo5.0
Latest update: #50636
Unnamed

Virtual Machine
---------------
C:\Users\JeCisC\Desktop\PharoVMSpur\Pharo.exe
CoInterpreter * VMMaker.oscog-rmacnak.1586 uuid:
8e44b2a7-68ee-4fc9-8513-a04520267053 Dec 13 2015
StackToRegisterMappingCogit * VMMaker.oscog-rmacnak.1586 uuid:
8e44b2a7-68ee-4fc9-8513-a04520267053 Dec 13 2015
https://github.com/estebanlm/pharo-vm.git Commit:
6dc730123e8f2b0327839b235d16e0604a92288e Date: 2015-12-13 00:23:41 +0100
By: Esteban Lorenzano <estebanlm@gmail.com> Jenkins build #456

Win32 built on Dec 13 2015 00:58:42 Compiler: 4.6.2
VMMaker versionString https://github.com/estebanlm/pharo-vm.git Commit:
6dc730123e8f2b0327839b235d16e0604a92288e Date: 2015-12-13 00:23:41 +0100
By: Esteban Lorenzano <estebanlm@gmail.com> Jenkins build #456
CoInterpreter * VMMaker.oscog-rmacnak.1586 uuid:
8e44b2a7-68ee-4fc9-8513-a04520267053 Dec 13 2015
StackToRegisterMappingCogit * VMMaker.oscog-rmacnak.1586 uuid:
8e44b2a7-68ee-4fc9-8513-a04520267053 Dec 13 2015

Operating System/Hardware
-------------------------
Win32 6.1 IX86

Operating System Details
------------------------
Operating System: Windows 7 Professional N (Build 7601 Service Pack 1)
�� �� �� �� Registered Owner: JeCisC
�� �� �� �� Registered Company:
�� �� �� �� SP major version: 1
�� �� �� �� SP minor version: 0
�� �� �� �� Suite mask: 100
�� �� �� �� Product type: 1



--
Cyril Ferlicot

http://www.synectique.eu

165 Avenue Bretagne
Lille 59000 France