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Jeroen W. Pluimers on .NET, C#, Delphi, databases, and personal interests

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Archive for December 15th, 2021

Always develop and test your application on multi-core machines

Posted by jpluimers on 2021/12/15

It’s an advice from a very long time ago, but wort to repeat every 20 years or so.

Develop and test your code on multi-threaded machines, not in single threaded VMs.

[] Jeroen Wiert Pluimers on Twitter: “This sounds like @danny_thorpe on a BorCon some 20 years ago in the Windows XP era. Thread slices going down from ~10 millisecond to CPU instruction execution magnitude highly increases the chance of race conditions.… “


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Posted in Development, Software Development | Leave a Comment »

Easiest way to move the C:\MSOCache directory to another drive is to create symbolic link to the new location

Posted by jpluimers on 2021/12/15

I always forget that, when moving a folder, instead of finding all references to that folder and fixing them, you can create an NTFS symlink from the old location to the new one.

[Wayback] how to move MSOCACHE folder from C-drive to D-drive ?? – Microsoft Community (thanks [Wayback] tgunda numbering and casing updates mine):

There are too much entries in the registry to correct them manually one by one.

An easier and quicker solution is to copy the full MSOCache folder to a new place and to make a soft link to it:
  1. Create a new folder, e.g. F:\MSOCache
  2. Copy everything from C:\MSOCache to the new one.
  3. Rename the old folder  C:\xMSOCache  (Don’t delete it, just in case).
  4. Open a command prompt window in administrator mode.
  5. Write:  mklink /d c:\MSOCache f:\MSOCache
Now there is an MSOCache link at C, pointing to the new place.
If everything is OK, you can delete  C:\xMSOCache

This can be very handy when moving around large software development installations, circumventing a full uninstall/install sequence loosing lots of configuration settings.


Posted in Development, LifeHacker, Office, Power User, Software Development, Windows, Windows Development | Leave a Comment »

Operame: Dutch open source CO2 sensor device for indoor usage: shows green/yellow/red for good/okay/bad CO2 ppm levels

Posted by jpluimers on 2021/12/15

Since all information is in Dutch, I keep only the title and this short explanation in English.

[] Sebastian Oort on Twitter: “Gaat jouw school binnenkort weer open? Wil je jouw klas veiliger maken? Hang een CO2 sensor op. Ze zijn weer op voorraad bij OperameNL ! We hebben nog ruim 100 stuks op voorraad en maandag komen de volgende 250 binnen! @OperameNL van @revspacenl… “


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Posted in Development, ESP32, Hardware Development, Hardware Interfacing, Software Development | Leave a Comment »

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