Threading Ticket to look/vote for

[Tommi Prami 131]

https://quality.embarcadero.com/browse/RSP-23466

 

And if someone is in Beta-program, test and try to be vocal towards Embarcadero about this.

[Stefan Glienke 2019]

"This also appears to affect OmiThreadLibrary" is very likely to be false - nothing in System.Threading is affecting the OTL at all - if the OTL reveals a similar behavior then it's most likely due to the solution and combination of parallel tasks itself.

 

The PPL is a story of broken stuff since the first version. The issue in this particular report seems to occur because the threadpool spins up to 100 (by default, you can change that) threads as it sees that CPU usage is still low (not sure about the situation in the real code as that very likely does not use Sleep) and then is probably way more busy managing those than actually doing work.

Edited September 6, 2019 by Stefan Glienke