Hi all,
Is there a way to reduce memory usage of osd to below 800MB per osd?My server has only about 1 GB memory for every osd and the osd sometimes gets killed by oom killer.
I have used the newer version of luminous from github(12.2.1-249-g42172a4 (42172a443183ffe6b36e85770e53fe678db293bf) to fix some memory problem of bluestore cache) and used this config for bluestore cache
bluestore_cache_size = 104857600
bluestore_cache_kv_max = 67108864
I have tested with both replicated and ec.Ec seems cost more memory but even in replicated mode osd still gets killed by oom killer.
I also find that if I restart all the osds when the memory usage is high then the memory usage goes down and It takes a few hour to get to the memory usage level before the restart.
I can bear with some performance loss to get the memory usage down but I am running out of idea how to do that:<
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