MB-8691 [Doc'd 2.2] Appends can cause large amounts of memory fragmentation in tcmalloc
MB-6120 Memory bloat when appending object up to 20mb
MB-9930 regression in memory fragmentation in tcmalloc with appends ops(2.5.0v2.2.0)
MB-9947 2.5 Release Notes- tcmalloc integration in 2.5
MB-8939 Better memory management in ep-engine to avoid fragmentation