Le 12/03/2016 18:47, Aliaksei Syrel a écrit : > 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 <[email protected]> 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 <[email protected]> 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
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signature.asc
Description: OpenPGP digital signature
