-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 8/27/15 10:04 PM, Navin Parakkal wrote:
Hi, I would like to know why SUSE through SLES and openSUSE still uses CONFIG_SLAB as the allocator instead of CONFIG_SLUB ?.
I've seen worst case scenarios locking up buffer_head when there is fragmentation and the number of slabs are in millions.
Any particular case where it performs better than SLUB . I'm not investigating on low end systems where SLOB is another option.
Mel can probably comment further, but there are two answers. 1) Inertia 2) Our testing hasn't shown any clear winner under all workloads between the two allocators and our mm experts have many years of experience working with the slab code. - -Jeff - -- Jeff Mahoney SUSE Labs -----BEGIN PGP SIGNATURE----- Version: GnuPG/MacGPG2 v2.0.22 (Darwin) iQIcBAEBAgAGBQJV39qKAAoJEB57S2MheeWyXi0QAKBMWIWhkag9VaT0CFyTuf27 R9hSk11t7u4AAwKprOOgixJjnKwhdsKmJgNXq/KHCH8DbJ5j4RnQfKOASLTi0Ktv 4VHjHoiqfKo7DZhs950dTOa8+cFT24S9zuvOaT/iXrOIXOs80s4zlmOFLsKhQQQ3 75CcE7hZdo8mJJ03zFX2OdojURjgyK3ruZ8EwZo7PEbnvlPOgj+3jF3beu8WdH0r SSLoYNUB2i3C5tEXjtl6BlhYN4sMV+lJVPNjk7/HEhY+SkSe9MxXr2fPd7LXQKds xMXza3CDHuwfn+pKvdFsOfDjnHspi56DXBwTxGrAA1rK39XKPPCtvNzyzoaEAWws /XG7Nf9zhQwfRn/hYmWpA5kPkLI/apJTqEpXeN5gvZZPSeRN7KJEQYSudsbTjpp4 TNnj5W5MRAB8Crj56jxub6rF5dMLJlJYJtzqoO2m/m/TYLQsBN4aGf84P0ZLBKcP z9j0fnOzRCDhNaSMZn/QNXZDdiMAJVVB33gC9MtHnqJzHi/CqRtN1UeMfONj5IRV oS4sMgtSR5cvQIs9LtY32QmF6ADjod4nbPnXV7U+WB+lZk+j3RCXKKAmU/nVZH+j 4IwZeGx2Z5uFiyWwRzGYRCEDKv8CHlmD1xyIA8oIgPkNdpRb3UIYA9MF1wO+fUe+ HQMOeCcjoMmX58manBaA =MXwQ -----END PGP SIGNATURE----- -- To unsubscribe, e-mail: opensuse-kernel+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse-kernel+owner@opensuse.org