Quoting Caspar Smit (casparsmit@xxxxxxxxxxx): > Stefan, > > How many OSD's and how much RAM are in each server? Currently 7 OSDs, 128 GB RAM. Max wil be 10 OSDs in these servers. 12 cores (at least one core per OSD). > bluestore_cache_size=6G will not mean each OSD is using max 6GB RAM right? Apparently. Sure they will use more RAM than just cache to function correctly. I figured 3 GB per OSD would be enough ... > Our bluestore hdd OSD's with bluestore_cache_size at 1G use ~4GB of total > RAM. The cache is a part of the memory usage by bluestore OSD's. A factor 4 is quite high, isn't it? Where is all this RAM used for besides cache? RocksDB? So how should I size the amount of RAM in a OSD server for 10 bluestore SSDs in a replicated setup? Thanks, Stefan -- | BIT BV http://www.bit.nl/ Kamer van Koophandel 09090351 | GPG: 0xD14839C6 +31 318 648 688 / info@xxxxxx _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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