Thanks for the answer. It seems very easy. I've never played with rocksdb options before. I always used default and I think I need to play more with it but I couldn't find a good config reference to understand at ceph side. Can I use this guide instead? https://github.com/facebook/rocksdb/wiki/RocksDB-Tuning-Guide This is the default options: "ceph config help bluestore_rocksdb_options" bluestore_rocksdb_options - Rocksdb options (str, advanced) Default: compression=kNoCompression,max_write_buffer_number=4,min_write_buffer_number_to_merge=1,recycle_log_file_num=4,write_buffer_size=268435456,writable_file_max_buffer_size=0,compaction_readahead_size=2097152,max_background_compactions=2 Can update at runtime: false > * get you release options `ceph config help bluestore_rocksdb_options` > * append `bluestore_rocksdb_options=536870912` to this list > * set `ceph config set osd bluestore_rocksdb_options <options_list>` Are you tried to say add these (below) options to the config? - options.max_bytes_for_level_base = 536870912; // 512MB - options.max_bytes_for_level_multiplier = 10; At the link below I've found a tune but its for All-Flash cluster. https://ceph.io/community/bluestore-default-vs-tuned-performance-comparison/ bluestore_rocksdb_options = compression=kNoCompression,max_write_buffer_number=32,min_write_buffer_number_to_merge=2,recycle_log_file_num=32,compaction_style=kCompactionStyleLevel,write_buffer_size=67108864,target_file_size_base=67108864,max_background_compactions=31,level0_file_num_compaction_trigger=8,level0_slowdown_writes_trigger=32,level0_stop_writes_trigger=64,max_bytes_for_level_base=536870912,compaction_threads=32,max_bytes_for_level_multiplier=8,flusher_threads=8,compaction_readahead_size=2MB Also I've 2 type OSD's. SSD's for RGW index(no external db) and HDD's for EC pool with NVME cache. Do I need different options? Konstantin Shalygin <k0ste@xxxxxxxx>, 19 Nis 2021 Pzt, 20:16 tarihinde şunu yazdı: > > You need to adjust max_bytes_for_level_base rocksdb option from bluestore_rocksdb_options to 536870912 > > * get you release options `ceph config help bluestore_rocksdb_options` > * append `bluestore_rocksdb_options=536870912` to this list > * set `ceph config set osd bluestore_rocksdb_options <options_list>` > > Restart your OSD's. > > > k > > On 19 Apr 2021, at 17:34, by morphin <morphinwithyou@xxxxxxxxx> wrote: > > How can I change the level up to 500MB --> 5GB --> 50GB ? > > _______________________________________________ ceph-users mailing list -- ceph-users@xxxxxxx To unsubscribe send an email to ceph-users-leave@xxxxxxx
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