[jeffbee]

There are shared resources involved though, for example one process can cause a lot of traffic in khugepaged. However I would point out that is an endemic risk of Linux's overall architecture. Any process can cause chaos by dirtying pages, or otherwise triggering reclaim.

[vlovich123]

That’s generally true of any allocator and assuming glibc’s behavior would help mitigate this is critically not something kernel engineers design around nor something glibc allocator is trying to achieve as a design goal.