mysql> show engine rocksdb status;
Type Name Status
STATISTICS rocksdb rocksdb.block.cache.miss COUNT : 2673222
rocksdb.block.cache.hit COUNT : 85683938
rocksdb.block.cache.add COUNT : 2601798
rocksdb.block.cache.add.failures COUNT : 0
rocksdb.block.cache.index.miss COUNT : 1437
rocksdb.block.cache.index.hit COUNT : 40084389
rocksdb.block.cache.index.add COUNT : 1437
rocksdb.block.cache.index.bytes.insert COUNT : 138105725
rocksdb.block.cache.index.bytes.evict COUNT : 0
...
DBSTATS rocksdb
** DB Stats **
Uptime(secs): 1884.3 total, 83.4 interval
Cumulative writes: 739K writes, 6638K keys, 739K commit groups, 1.0 writes per commit group, ingest: 1.40 GB, 0.76 MB/s
Cumulative WAL: 739K writes, 0 syncs, 739812.00 writes per sync, written: 0.72 GB, 0.39 MB/s
Cumulative stall: 00:00:0.000 H:M:S, 0.0 percent
Interval writes: 40K writes, 363K keys, 40K commit groups, 1.0 writes per commit group, ingest: 78.57 MB, 0.94 MB/s
Interval WAL: 40K writes, 0 syncs, 40561.00 writes per sync, written: 0.04 MB, 0.48 MB/s
Interval stall: 00:00:0.000 H:M:S, 0.0 percent
CF_COMPACTION __system__
** Compaction Stats [__system__] **
Level Files Size Score Read(GB) Rn(GB) Rnp1(GB) Write(GB) Wnew(GB) Moved(GB) W-Amp Rd(MB/s) Wr(MB/s) Comp(sec) CompMergeCPU(sec) Comp(cnt) Avg(sec) KeyIn KeyDrop
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------
L0 0/0 0.00 KB 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.0 0.0 0.1 0.01 0.00 1 0.009 0 0
L1 1/0 2.52 KB 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.4 0.9 0.3 0.01 0.00 1 0.009 37 21
L6 1/0 2.13 KB 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.00 0.00 0 0.000 0 0
Sum 2/0 4.65 KB 0.0 0.0 0.0 0.0 0.0 0.0 0.0 3.7 0.5 0.2 0.02 0.00 2 0.009 37 21
Int 0/0 0.00 KB 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.00 0.00 0 0.000 0 0
** Compaction Stats [__system__] **
Priority Files Size Score Read(GB) Rn(GB) Rnp1(GB) Write(GB) Wnew(GB) Moved(GB) W-Amp Rd(MB/s) Wr(MB/s) Comp(sec) CompMergeCPU(sec) Comp(cnt) Avg(sec) KeyIn KeyDrop
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Low 0/0 0.00 KB 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.9 0.3 0.01 0.00 1 0.009 37 21
User 0/0 0.00 KB 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.01 0.00 1 0.009 0 0
Uptime(secs): 1884.3 total, 83.4 interval
Flush(GB): cumulative 0.000, interval 0.000
AddFile(GB): cumulative 0.000, interval 0.000
AddFile(Total Files): cumulative 0, interval 0
AddFile(L0 Files): cumulative 0, interval 0
AddFile(Keys): cumulative 0, interval 0
Cumulative compaction: 0.00 GB write, 0.00 MB/s write, 0.00 GB read, 0.00 MB/s read, 0.0 seconds
Interval compaction: 0.00 GB write, 0.00 MB/s write, 0.00 GB read, 0.00 MB/s read, 0.0 seconds
Stalls(count): 0 level0_slowdown, 0 level0_slowdown_with_compaction, 0 level0_numfiles, 0 level0_numfiles_with_compaction, 0 stop for pending_compaction_bytes, 0 slowdown for pending_compaction_bytes, 0 memtable_compaction, 0 memtable_slowdown, interval 0 total count
...
** Level 6 read latency histogram (micros):
Count: 2121051 Average: 143.5077 StdDev: 1489.83
Min: 0 Median: 137.8562 Max: 1264999
Percentiles: P50: 137.86 P75: 201.15 P99: 252.94 P99.9: 4188.94 P99.99: 91173.22
------------------------------------------------------
[ 0, 1 ] 1700 0.080% 0.080%
( 1, 2 ] 6894 0.325% 0.405%
( 2, 3 ] 77872 3.671% 4.077% #
( 3, 4 ] 311119 14.668% 18.745% ###
( 4, 6 ] 420244 19.813% 38.558% ####
( 6, 10 ] 62674 2.955% 41.513% #
( 10, 15 ] 1021 0.048% 41.561%
( 15, 22 ] 91 0.004% 41.565%
( 22, 34 ] 25 0.001% 41.566%
( 34, 51 ] 10 0.000% 41.567%
( 51, 76 ] 18 0.001% 41.568%
( 76, 110 ] 414 0.020% 41.587%
( 110, 170 ] 384353 18.121% 59.708% ####
( 170, 250 ] 833008 39.273% 98.981% ########
( 250, 380 ] 17591 0.829% 99.811%
( 380, 580 ] 326 0.015% 99.826%
( 580, 870 ] 239 0.011% 99.837%
( 870, 1300 ] 409 0.019% 99.857%
( 1300, 1900 ] 372 0.018% 99.874%
( 1900, 2900 ] 342 0.016% 99.890%
( 2900, 4400 ] 242 0.011% 99.902%
( 4400, 6600 ] 163 0.008% 99.909%
( 6600, 9900 ] 325 0.015% 99.925%
( 9900, 14000 ] 717 0.034% 99.958%
( 14000, 22000 ] 99 0.005% 99.963%
( 22000, 33000 ] 193 0.009% 99.972%
( 33000, 50000 ] 171 0.008% 99.980%
( 50000, 75000 ] 102 0.005% 99.985%
( 75000, 110000 ] 227 0.011% 99.996%
( 110000, 170000 ] 39 0.002% 99.998%
( 170000, 250000 ] 22 0.001% 99.999%
( 250000, 380000 ] 13 0.001% 99.999%
( 380000, 570000 ] 5 0.000% 99.999%
( 570000, 860000 ] 10 0.000% 100.000%
( 1200000, 1900000 ] 1 0.000% 100.000%
...mysql> show global status like 'rocksdb%';
+----------------------------------------------------+------------------------------------------+
| Variable_name | Value |
+----------------------------------------------------+------------------------------------------+
| rocksdb_rows_deleted | 129720 |
| rocksdb_rows_inserted | 1685764 |
| rocksdb_rows_read | 14286838 |
| rocksdb_rows_updated | 3371427 |
| rocksdb_rows_deleted_blind | 0 |
| rocksdb_rows_expired | 0 |
| rocksdb_rows_filtered | 0 |
| rocksdb_system_rows_deleted | 0 |
| rocksdb_system_rows_inserted | 0 |
| rocksdb_system_rows_read | 0 |
| rocksdb_system_rows_updated | 0 |
| rocksdb_memtable_total | 176868392 |
| rocksdb_memtable_unflushed | 46836824 |
| rocksdb_queries_point | 4653670 |
| rocksdb_queries_range | 598903 |
| rocksdb_table_index_stats_success | 0 |
| rocksdb_table_index_stats_failure | 0 |
| rocksdb_table_index_stats_req_queue_length | 0 |
| rocksdb_covered_secondary_key_lookups | 424614 |
| rocksdb_additional_compaction_triggers | 0 |
| rocksdb_block_cache_add | 2693436 |
| rocksdb_block_cache_add_failures | 0 |
| rocksdb_block_cache_bytes_read | 6186277511303 |
| rocksdb_block_cache_bytes_write | 43925914567 |
| rocksdb_block_cache_data_add | 2691998 |
| rocksdb_block_cache_data_bytes_insert | 43787713262 |
| rocksdb_block_cache_data_hit | 47953275 |
| rocksdb_block_cache_data_miss | 2763422 |
| rocksdb_block_cache_filter_add | 0 |
| rocksdb_block_cache_filter_bytes_evict | 0 |
| rocksdb_block_cache_filter_bytes_insert | 0 |
| rocksdb_block_cache_filter_hit | 0 |
| rocksdb_block_cache_filter_miss | 0 |
| rocksdb_block_cache_hit | 90086503 |
| rocksdb_block_cache_index_add | 1438 |
| rocksdb_block_cache_index_bytes_evict | 0 |
| rocksdb_block_cache_index_bytes_insert | 138201305 |
| rocksdb_block_cache_index_hit | 42133228 |
| rocksdb_block_cache_index_miss | 1438 |
| rocksdb_block_cache_miss | 2764860 |
| rocksdb_block_cachecompressed_hit | 0 |
| rocksdb_block_cachecompressed_miss | 0 |
| rocksdb_bloom_filter_full_positive | 0 |
| rocksdb_bloom_filter_full_true_positive | 0 |
| rocksdb_bloom_filter_prefix_checked | 0 |
| rocksdb_bloom_filter_prefix_useful | 0 |
| rocksdb_bloom_filter_useful | 0 |
| rocksdb_bytes_read | 2027039128 |
| rocksdb_bytes_written | 1578812205 |
| rocksdb_compact_read_bytes | 1166561200 |
| rocksdb_compact_write_bytes | 2279901099 |
| rocksdb_compaction_key_drop_new | 191043 |
| rocksdb_compaction_key_drop_obsolete | 668 |
| rocksdb_compaction_key_drop_user | 0 |
| rocksdb_flush_write_bytes | 712569474 |
...
| rocksdb_number_sst_entry_put | 34860406 |
| rocksdb_number_sst_entry_singledelete | 488841 |
| rocksdb_number_superversion_acquires | 48 |
| rocksdb_number_superversion_cleanups | 19 |
| rocksdb_number_superversion_releases | 21 |
| rocksdb_row_lock_deadlocks | 0 |
| rocksdb_row_lock_wait_timeouts | 0 |
| rocksdb_select_bypass_executed | 0 |
| rocksdb_select_bypass_failed | 0 |
| rocksdb_select_bypass_rejected | 0 |
| rocksdb_snapshot_conflict_errors | 0 |
| rocksdb_stall_l0_file_count_limit_slowdowns | 0 |
| rocksdb_stall_locked_l0_file_count_limit_slowdowns | 0 |
| rocksdb_stall_l0_file_count_limit_stops | 0 |
| rocksdb_stall_locked_l0_file_count_limit_stops | 0 |
| rocksdb_stall_pending_compaction_limit_stops | 0 |
| rocksdb_stall_pending_compaction_limit_slowdowns | 0 |
| rocksdb_stall_memtable_limit_stops | 0 |
| rocksdb_stall_memtable_limit_slowdowns | 0 |
| rocksdb_stall_total_stops | 0 |
| rocksdb_stall_total_slowdowns | 0 |
| rocksdb_stall_micros | 0 |
| rocksdb_wal_bytes | 808618570 |
| rocksdb_wal_group_syncs | 1 |
| rocksdb_wal_synced | 2535 |
| rocksdb_write_other | 0 |
| rocksdb_write_self | 775839 |
| rocksdb_write_timedout | 0 |
| rocksdb_write_wal | 1551678 |
+----------------------------------------------------+------------------------------------------+