Once the input factory is set up with a custom event allocator, every event reader created from it will use it to create event objects.
Similarly, when people's faith in Wall Street as an honest broker, a smart allocator of capital, and a path to personal wealth was disappointed, they managed to explain things away.
There remains one kind of caching that is highly desirable in some applications but not implemented in this allocator -- lookasides for very small chunks.
The Linux slab allocator uses these ideas and others to build a memory allocator that is efficient in both space and time.
The allocator can't coalesce free space into larger blocks.
Initializing the slab allocator and creating slab caches for VFS, buffer cache, etc.
If you then interpret it as a C string again, you'll have only 0.4% odds that you'll see the actual string, zero odds when you use a debug allocator.
However, over the years, the allocator has evolved to make trade-offs that the majority of users find to be acceptable.
