Hardware apparatuses and methods for memory performance monitoring

A method comprising:

• allocating a first virtual memory region of a memory for a first data structure with a first allocator;
• allocating a second, different virtual memory region of the memory for a second data structure with a second allocator;
• detecting a memory access request to the memory;
• setting a monitor flag, for each memory access request, when a virtual address of a memory access request is in the first virtual memory region and when the virtual address of the memory access request is in the second, different virtual memory region;
• and
• enabling a performance monitoring unit to monitor the memory access request when the monitor flag is set.

A non-transitory machine readable medium that stores code that when executed by a machine causes the machine to perform a method comprising:

• allocating a first virtual memory region of a memory for a first data structure with a first allocator;
• allocating a second, different virtual memory region of the memory for a second data structure with a second allocator;
• detecting a memory access request to the memory;
• setting a monitor flag, for each memory access request, when a virtual address of a memory access request is in the first virtual memory region and when the virtual address of the memory access request is in the second, different virtual memory region;
• and
• enabling a performance monitoring unit to monitor the memory access request when the monitor flag is set.