I switched first of may, and did not notice to much difference in memory usage. After the restart of the osd's on the node I see the memory consumption gradually getting back to as before. Can't say anything about latency. -----Original Message----- From: Konstantin Shalygin Sent: dinsdag 28 mei 2019 11:52 To: Wido den Hollander Cc: ceph-users@xxxxxxxxxxxxxx Subject: *****SPAM***** Re: BlueStore bitmap allocator under Luminous and Mimic ________________________________ Hi, With the release of 12.2.12 the bitmap allocator for BlueStore is now available under Mimic and Luminous. [osd] bluestore_allocator = bitmap bluefs_allocator = bitmap Before setting this in production: What might the implications be and what should be thought of? >From what I've read the bitmap allocator seems to be better in read performance and uses less memory. In Nautilus bitmap is the default, but L and M still default to stupid. Since the bitmap allocator was backported there must be a use-case to use the bitmap allocator instead of stupid. Thanks! Wido Wido, do you setted allocator to bitmap on L installations past this months? Any improvements? k
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