Comment 7 for bug 1987430

I booted the "stock" VM with slub_nomerge and after two hours of uptime (and constant Go compilation and testing), the top counts in slabtop for active objects and memory use are:

  OBJS ACTIVE USE OBJ SIZE SLABS OBJ/SLAB CACHE SIZE NAME
536896 536869 99% 2.00K 33556 16 1073792K kmalloc-2k
536350 536350 100% 0.02K 3155 170 12620K audit_buffer
536320 536320 100% 0.25K 33520 16 134080K skbuff_head_cache
489099 489099 100% 0.10K 12541 39 50164K buffer_head
 78057 75309 96% 0.19K 3717 21 14868K dentry
 65110 59084 90% 0.02K 383 170 1532K lsm_inode_cache

  OBJS ACTIVE USE OBJ SIZE SLABS OBJ/SLAB CACHE SIZE NAME
537104 537097 99% 2.00K 33569 16 1074208K kmalloc-2k
536528 536528 100% 0.25K 33533 16 134132K skbuff_head_cache
465348 397547 85% 0.10K 11932 39 47728K buffer_head
 36936 36471 98% 1.15K 1368 27 43776K ext4_inode_cache
 76839 56841 73% 0.19K 3659 21 14636K dentry
 20988 19716 93% 0.62K 1749 12 13992K inode_cache
536520 536520 100% 0.02K 3156 170 12624K audit_buffer

It seems suggestive that the top three by count have almost the same count (and it's a large one).