Why many programmers don't like GC?

[welkam]

On Wednesday, 13 January 2021 at 18:58:56 UTC, Marcone wrote:
> I've always heard programmers complain about Garbage Collector 
> GC. But I never understood why they complain. What's bad about 
> GC?

Most people get to know GC trough Java or C#. Those languages 
promote the use of OOP and they say that you dont need to worry 
about memory management. The result is that people write code 
that doesnt utilize CPU caches effectively and makes a lot of 
temporary allocations. For example people at Microsoft 
implemented json parser in C# and it would allocate 8GB of memory 
for every 1GB parsed. Add to that virtual machines and you find 
that programs written in those languages run like they are coded 
in molasse.

People with experience of those programs conclude that is all 
because of GC. And its simple explanation for simple people.