MyRocks Status Variables
Contents
- Rocksdb_block_cache_add
- Rocksdb_block_cache_add_failures
- Rocksdb_block_cache_bytes_read
- Rocksdb_block_cache_bytes_write
- Rocksdb_block_cache_data_add
- Rocksdb_block_cache_data_bytes_insert
- Rocksdb_block_cache_data_hit
- Rocksdb_block_cache_data_miss
- Rocksdb_block_cache_filter_add
- Rocksdb_block_cache_filter_bytes_evict
- Rocksdb_block_cache_filter_bytes_insert
- Rocksdb_block_cache_filter_hit
- Rocksdb_block_cache_filter_miss
- Rocksdb_block_cache_hit
- Rocksdb_block_cache_index_add
- Rocksdb_block_cache_index_bytes_evict
- Rocksdb_block_cache_index_bytes_insert
- Rocksdb_block_cache_index_hit
- Rocksdb_block_cache_index_miss
- Rocksdb_block_cache_miss
- Rocksdb_block_cachecompressed_hit
- Rocksdb_block_cachecompressed_miss
- Rocksdb_bloom_filter_full_positive
- Rocksdb_bloom_filter_full_true_positive
- Rocksdb_bloom_filter_prefix_checked
- Rocksdb_bloom_filter_prefix_useful
- Rocksdb_bloom_filter_useful
- Rocksdb_bytes_read
- Rocksdb_bytes_written
- Rocksdb_compact_read_bytes
- Rocksdb_compact_write_bytes
- Rocksdb_compaction_key_drop_new
- Rocksdb_compaction_key_drop_obsolete
- Rocksdb_compaction_key_drop_user
- Rocksdb_covered_secondary_key_lookups
- Rocksdb_flush_write_bytes
- Rocksdb_get_hit_l0
- Rocksdb_get_hit_l1
- Rocksdb_get_hit_l2_and_up
- Rocksdb_getupdatessince_calls
- Rocksdb_iter_bytes_read
- Rocksdb_l0_num_files_stall_micros
- Rocksdb_l0_slowdown_micros
- Rocksdb_manual_compactions_processed
- Rocksdb_manual_compactions_running
- Rocksdb_memtable_compaction_micros
- Rocksdb_memtable_hit
- Rocksdb_memtable_miss
- Rocksdb_memtable_total
- Rocksdb_memtable_unflushed
- Rocksdb_no_file_closes
- Rocksdb_no_file_errors
- Rocksdb_no_file_opens
- Rocksdb_num_iterators
- Rocksdb_number_block_not_compressed
- Rocksdb_number_db_next
- Rocksdb_number_db_next_found
- Rocksdb_number_db_prev
- Rocksdb_number_db_prev_found
- Rocksdb_number_db_seek
- Rocksdb_number_db_seek_found
- Rocksdb_number_deletes_filtered
- Rocksdb_number_keys_read
- Rocksdb_number_keys_updated
- Rocksdb_number_keys_written
- Rocksdb_number_merge_failures
- Rocksdb_number_multiget_bytes_read
- Rocksdb_number_multiget_get
- Rocksdb_number_multiget_keys_read
- Rocksdb_number_reseeks_iteration
- Rocksdb_number_sst_entry_delete
- Rocksdb_number_sst_entry_merge
- Rocksdb_number_sst_entry_other
- Rocksdb_number_sst_entry_put
- Rocksdb_number_sst_entry_singledelete
- Rocksdb_number_superversion_acquires
- Rocksdb_number_superversion_cleanups
- Rocksdb_number_superversion_releases
- Rocksdb_queries_point
- Rocksdb_queries_range
- Rocksdb_row_lock_deadlocks
- Rocksdb_row_lock_wait_timeouts
- Rocksdb_rows_deleted
- Rocksdb_rows_deleted_blind
- Rocksdb_rows_expired
- Rocksdb_rows_filtered
- Rocksdb_rows_inserted
- Rocksdb_rows_read
- Rocksdb_rows_updated
- Rocksdb_snapshot_conflict_errors
- Rocksdb_stall_l0_file_count_limit_slowdowns
- Rocksdb_stall_l0_file_count_limit_stops
- Rocksdb_stall_locked_l0_file_count_limit_slowdowns
- Rocksdb_stall_locked_l0_file_count_limit_stops
- Rocksdb_stall_memtable_limit_slowdowns
- Rocksdb_stall_memtable_limit_stops
- Rocksdb_stall_micros
- Rocksdb_stall_pending_compaction_limit_slowdowns
- Rocksdb_stall_pending_compaction_limit_stops
- Rocksdb_stall_total_slowdowns
- Rocksdb_stall_total_stops
- Rocksdb_system_rows_deleted
- Rocksdb_system_rows_inserted
- Rocksdb_system_rows_read
- Rocksdb_system_rows_updated
- Rocksdb_wal_bytes
- Rocksdb_wal_group_syncs
- Rocksdb_wal_synced
- Rocksdb_write_other
- Rocksdb_write_self
- Rocksdb_write_timedout
- Rocksdb_write_wal
This page documents status variables related to the MyRocks storage engine. See Server Status Variables for a complete list of status variables that can be viewed with SHOW STATUS.
See also the Full list of MariaDB options, system and status variables.
Rocksdb_block_cache_add
- Description: Number of blocks added to the Block Cache.
- Scope: Global, Session
- Data Type:
numeric
Rocksdb_block_cache_add_failures
- Description: Number of failures when adding blocks to Block Cache.
- Scope: Global, Session
- Data Type:
numeric
- Introduced: MariaDB 10.2.15, MariaDB 10.3.7
Rocksdb_block_cache_bytes_read
- Description: Bytes read from Block Cache.
- Scope: Global, Session
- Data Type:
numeric
- Introduced: MariaDB 10.2.15, MariaDB 10.3.7
Rocksdb_block_cache_bytes_write
- Description: Bytes written to Block Cache.
- Scope: Global, Session
- Data Type:
numeric
- Introduced: MariaDB 10.2.15, MariaDB 10.3.7
Rocksdb_block_cache_data_add
- Description: Number of data blocks added to the Block Cache.
- Scope: Global, Session
- Data Type:
numeric
- Introduced: MariaDB 10.2.15, MariaDB 10.3.7
Rocksdb_block_cache_data_bytes_insert
- Description: Bytes added to the Block Cache.
- Scope: Global, Session
- Data Type:
numeric
- Introduced: MariaDB 10.2.15, MariaDB 10.3.7
Rocksdb_block_cache_data_hit
- Description: Number of hits when accessing the data block from the Block Cache.
- Scope: Global, Session
- Data Type:
numeric
Rocksdb_block_cache_data_miss
- Description: Number of misses when accessing the data block from the Block Cache.
- Scope: Global, Session
- Data Type:
numeric
Rocksdb_block_cache_filter_add
- Description: Number of bloom filter blocks added to the Block Cache.
- Scope: Global, Session
- Data Type:
numeric
- Introduced: MariaDB 10.2.15, MariaDB 10.3.7
Rocksdb_block_cache_filter_bytes_evict
- Description: Bytes of bloom filter blocks evicted from the Block Cache.
- Scope: Global, Session
- Data Type:
numeric
- Introduced: MariaDB 10.2.15, MariaDB 10.3.7
Rocksdb_block_cache_filter_bytes_insert
- Description: Bytes of bloom filter blocks added to the Block Cache.
- Scope: Global, Session
- Data Type:
numeric
- Introduced: MariaDB 10.2.15, MariaDB 10.3.7
Rocksdb_block_cache_filter_hit
- Description: Number of hits when accessing the filter block from the Block Cache.
- Scope: Global, Session
- Data Type:
numeric
Rocksdb_block_cache_filter_miss
- Description: Number of misses when accessing the filter block from the Block Cache.
- Scope: Global, Session
- Data Type:
numeric
Rocksdb_block_cache_hit
- Description: Total number of hits for the Block Cache.
- Scope: Global, Session
- Data Type:
numeric
Rocksdb_block_cache_index_add
- Description: Number of index blocks added to Block Cache index.
- Scope: Global, Session
- Data Type:
numeric
- Introduced: MariaDB 10.2.15, MariaDB 10.3.7
Rocksdb_block_cache_index_bytes_evict
- Description: Bytes of index blocks evicted from the Block Cache.
- Scope: Global, Session
- Data Type:
numeric
- Introduced: MariaDB 10.2.15, MariaDB 10.3.7
Rocksdb_block_cache_index_bytes_insert
- Description: Bytes of index blocks added to the Block Cache.
- Scope: Global, Session
- Data Type:
numeric
- Introduced: MariaDB 10.2.15, MariaDB 10.3.7
Rocksdb_block_cache_index_hit
- Description: Number of hits for the Block Cache index.
- Scope: Global, Session
- Data Type:
numeric
Rocksdb_block_cache_index_miss
- Description: Number of misses for the Block Cache index.
- Scope: Global, Session
- Data Type:
numeric
Rocksdb_block_cache_miss
- Description: Total number of misses for the Block Cache.
- Scope: Global, Session
- Data Type:
numeric
Rocksdb_block_cachecompressed_hit
- Description: Number of hits for the compressed Block Cache.
- Scope: Global, Session
- Data Type:
numeric
Rocksdb_block_cachecompressed_miss
- Description: Number of misses for the compressed Block Cache.
- Scope: Global, Session
- Data Type:
numeric
Rocksdb_bloom_filter_full_positive
- Description:
- Scope: Global, Session
- Data Type:
numeric
- Introduced: MariaDB 10.2.18, MariaDB 10.3.10
Rocksdb_bloom_filter_full_true_positive
- Description:
- Scope: Global, Session
- Data Type:
numeric
- Introduced: MariaDB 10.2.18, MariaDB 10.3.10
Rocksdb_bloom_filter_prefix_checked
- Description: Number of times the Bloom Filter checked before creating an iterator on a file.
- Scope: Global, Session
- Data Type:
numeric
Rocksdb_bloom_filter_prefix_useful
- Description: Number of times the Bloom Filter check used to avoid creating an iterator on a file.
- Scope: Global, Session
- Data Type:
numeric
Rocksdb_bloom_filter_useful
- Description: Number of times the Bloom Filter used instead of reading form file.
- Scope: Global, Session
- Data Type:
numeric
Rocksdb_bytes_read
- Description: Total number of uncompressed bytes read from memtables, cache or table files.
- Scope: Global, Session
- Data Type:
numeric
Rocksdb_bytes_written
- Description: Total number of uncompressed bytes written.
- Scope: Global, Session
- Data Type:
numeric
Rocksdb_compact_read_bytes
- Description: Number of bytes read during compaction.
- Scope: Global, Session
- Data Type:
numeric
Rocksdb_compact_write_bytes
- Description: Number of bytes written during compaction.
- Scope: Global, Session
- Data Type:
numeric
Rocksdb_compaction_key_drop_new
- Description: Number of keys dropped during compaction due their being overwritten by new values.
- Scope: Global, Session
- Data Type:
numeric
Rocksdb_compaction_key_drop_obsolete
- Description: Number of keys dropped during compaction due to their being obsolete.
- Scope: Global, Session
- Data Type:
numeric
Rocksdb_compaction_key_drop_user
- Description: Number of keys dropped during compaction due to user compaction.
- Scope: Global, Session
- Data Type:
numeric
Rocksdb_covered_secondary_key_lookups
- Description: Incremented when avoiding reading a record via a keyread. This indicates lookups that were performed via a secondary index containing a field that is only a prefix of the VARCHAR column, and that could return all requested fields directly from the secondary index.
- Scope: Global, Session
- Data Type:
numeric
Rocksdb_flush_write_bytes
- Description: Number of bytes written during flush.
- Scope: Global, Session
- Data Type:
numeric
Rocksdb_get_hit_l0
- Description: Number of times reads got data from the L0 compaction layer.
- Scope: Global, Session
- Data Type:
numeric
- Introduced: MariaDB 10.2.15, MariaDB 10.3.7
Rocksdb_get_hit_l1
- Description: Number of times reads got data from the L1 compaction layer.
- Scope: Global, Session
- Data Type:
numeric
- Introduced: MariaDB 10.2.15, MariaDB 10.3.7
Rocksdb_get_hit_l2_and_up
- Description: Number of times reads got data from the L2 and up compaction layer.
- Scope: Global, Session
- Data Type:
numeric
- Introduced: MariaDB 10.2.15, MariaDB 10.3.7
Rocksdb_getupdatessince_calls
- Description: Number of calls to the
GetUpdatesSince
function. You may find this useful when monitoring refreshes of the transaction log. - Scope: Global, Session
- Data Type:
numeric
Rocksdb_iter_bytes_read
- Description: Total uncompressed bytes read from an iterator, including the size of both key and value.
- Scope: Global, Session
- Data Type:
numeric
- Introduced: MariaDB 10.2.15, MariaDB 10.3.7
Rocksdb_l0_num_files_stall_micros
- Description: Shows how long in microseconds throttled due to too mnay files in L0.
- Scope: Global, Session
- Data Type:
numeric
- Removed: MariaDB 10.3.1, MariaDB 10.2.8
Rocksdb_l0_slowdown_micros
- Description: Total time spent waiting in microseconds while performing L0-L1 compactions.
- Scope: Global, Session
- Data Type:
numeric
- Removed: MariaDB 10.3.1, MariaDB 10.2.8
Rocksdb_manual_compactions_processed
- Description:
- Scope: Global, Session
- Data Type:
numeric
- Introduced: MariaDB 10.2.18, MariaDB 10.3.10
Rocksdb_manual_compactions_running
- Description:
- Scope: Global, Session
- Data Type:
numeric
- Introduced: MariaDB 10.2.18, MariaDB 10.3.10
Rocksdb_memtable_compaction_micros
- Description:
- Scope: Global, Session
- Data Type:
numeric
- Removed: MariaDB 10.3.1, MariaDB 10.2.8
Rocksdb_memtable_hit
- Description: Number of memtable hits.
- Scope: Global, Session
- Data Type:
numeric
Rocksdb_memtable_miss
- Description: Number of memtable misses.
- Scope: Global, Session
- Data Type:
numeric
Rocksdb_memtable_total
- Description: Memory used, in bytes, of all memtables.
- Scope: Global, Session
- Data Type:
numeric
Rocksdb_memtable_unflushed
- Description: Memory used, in bytes, of all unflushed memtables.
- Scope: Global, Session
- Data Type:
numeric
Rocksdb_no_file_closes
- Description: Number of times files were closed.
- Scope: Global, Session
- Data Type:
numeric
Rocksdb_no_file_errors
- Description: Number of errors encountered while trying to read data from an SST file.
- Scope: Global, Session
- Data Type:
numeric
Rocksdb_no_file_opens
- Description: Number of times files were opened.
- Scope: Global, Session
- Data Type:
numeric
Rocksdb_num_iterators
- Description: Number of iterators currently open.
- Scope: Global, Session
- Data Type:
numeric
Rocksdb_number_block_not_compressed
- Description: Number of uncompressed blocks.
- Scope: Global, Session
- Data Type:
numeric
Rocksdb_number_db_next
- Description: Number of
next
calls. - Scope: Global, Session
- Data Type:
numeric
- Introduced: MariaDB 10.2.15, MariaDB 10.3.7
Rocksdb_number_db_next_found
- Description: Number of
next
calls that returned data. - Scope: Global, Session
- Data Type:
numeric
- Introduced: MariaDB 10.2.15, MariaDB 10.3.7
Rocksdb_number_db_prev
- Description: Number of
prev
calls. - Scope: Global, Session
- Data Type:
numeric
- Introduced: MariaDB 10.2.15, MariaDB 10.3.7
Rocksdb_number_db_prev_found
- Description: Number of
prev
calls that returned data. - Scope: Global, Session
- Data Type:
numeric
- Introduced: MariaDB 10.2.15, MariaDB 10.3.7
Rocksdb_number_db_seek
- Description: Number of
seek
calls. - Scope: Global, Session
- Data Type:
numeric
- Introduced: MariaDB 10.2.15, MariaDB 10.3.7
Rocksdb_number_db_seek_found
- Description: Number of
seek
calls that returned data. - Scope: Global, Session
- Data Type:
numeric
- Introduced: MariaDB 10.2.15, MariaDB 10.3.7
Rocksdb_number_deletes_filtered
- Description: Number of deleted records were not written to storage due to a nonexistent key.
- Scope: Global, Session
- Data Type:
numeric
Rocksdb_number_keys_read
- Description: Number of keys have been read.
- Scope: Global, Session
- Data Type:
numeric
Rocksdb_number_keys_updated
- Description: Number of keys have been updated.
- Scope: Global, Session
- Data Type:
numeric
Rocksdb_number_keys_written
- Description: Number of keys have been written.
- Scope: Global, Session
- Data Type:
numeric
Rocksdb_number_merge_failures
- Description: Number of failures encountered while performing merge operator actions.
- Scope: Global, Session
- Data Type:
numeric
Rocksdb_number_multiget_bytes_read
- Description: Number of bytes read during RocksDB
MultiGet()
calls. - Scope: Global, Session
- Data Type:
numeric
Rocksdb_number_multiget_get
- Description: Number of RocksDB
MultiGet()
requests made. - Scope: Global, Session
- Data Type:
numeric
Rocksdb_number_multiget_keys_read
- Description: Number of keys read through RocksDB
MultiGet()
calls. - Scope: Global, Session
- Data Type:
numeric
Rocksdb_number_reseeks_iteration
- Description: Number of reseeks that have occurred inside an iteration that skipped over a large number of keys with the same user key.
- Scope: Global, Session
- Data Type:
numeric
Rocksdb_number_sst_entry_delete
- Description: Number of delete markers written.
- Scope: Global, Session
- Data Type:
numeric
Rocksdb_number_sst_entry_merge
- Description: Number of merge keys written.
- Scope: Global, Session
- Data Type:
numeric
Rocksdb_number_sst_entry_other
- Description: Number of keys written that are not delete, merge or put keys.
- Scope: Global, Session
- Data Type:
numeric
Rocksdb_number_sst_entry_put
- Description: Number of put keys written.
- Scope: Global, Session
- Data Type:
numeric
Rocksdb_number_sst_entry_singledelete
- Description: Number of single-delete keys written.
- Scope: Global, Session
- Data Type:
numeric
Rocksdb_number_superversion_acquires
- Description: Number of times the superversion structure acquired. This is useful when tracking files for the database.
- Scope: Global, Session
- Data Type:
numeric
Rocksdb_number_superversion_cleanups
- Description: Number of times the superversion structure performed cleanups.
- Scope: Global, Session
- Data Type:
numeric
Rocksdb_number_superversion_releases
- Description: Number of times the superversion structure released.
- Scope: Global, Session
- Data Type:
numeric
Rocksdb_queries_point
- Description: Number of single-row queries.
- Scope: Global, Session
- Data Type:
numeric
Rocksdb_queries_range
- Description: Number of multi-row queries.
- Scope: Global, Session
- Data Type:
numeric
Rocksdb_row_lock_deadlocks
- Description: Number of deadlocks.
- Scope: Global, Session
- Data Type:
numeric
- Introduced: MariaDB 10.2.15, MariaDB 10.3.7
Rocksdb_row_lock_wait_timeouts
- Description: Number of row lock wait timeouts.
- Scope: Global, Session
- Data Type:
numeric
- Introduced: MariaDB 10.2.15, MariaDB 10.3.7
Rocksdb_rows_deleted
- Description: Number of rows deleted.
- Scope: Global, Session
- Data Type:
numeric
Rocksdb_rows_deleted_blind
- Description:
- Scope: Global, Session
- Data Type:
numeric
Rocksdb_rows_expired
- Description: Number of expired rows.
- Scope: Global, Session
- Data Type:
numeric
Rocksdb_rows_filtered
- Description: Number of TTL filtered rows.
- Scope: Global, Session
- Data Type:
numeric
- Introduced: MariaDB 10.2.15, MariaDB 10.3.7
Rocksdb_rows_inserted
- Description: Number of rows inserted.
- Scope: Global, Session
- Data Type:
numeric
Rocksdb_rows_read
- Description: Number of rows read.
- Scope: Global, Session
- Data Type:
numeric
Rocksdb_rows_updated
- Description: Number of rows updated.
- Scope: Global, Session
- Data Type:
numeric
Rocksdb_snapshot_conflict_errors
- Description: Number of snapshot conflict errors that have occurred during transactions that forced a rollback.
- Scope: Global, Session
- Data Type:
numeric
Rocksdb_stall_l0_file_count_limit_slowdowns
- Description: Write slowdowns due to L0 being near to full.
- Scope: Global, Session
- Data Type:
numeric
Rocksdb_stall_l0_file_count_limit_stops
- Description: Write stops due to L0 being to full.
- Scope: Global, Session
- Data Type:
numeric
Rocksdb_stall_locked_l0_file_count_limit_slowdowns
- Description: Write slowdowns due to L0 being near to full and L0 compaction in progress.
- Scope: Global, Session
- Data Type:
numeric
Rocksdb_stall_locked_l0_file_count_limit_stops
- Description: Write stops due to L0 being full and L0 compaction in progress.
- Scope: Global, Session
- Data Type:
numeric
Rocksdb_stall_memtable_limit_slowdowns
- Description: Write slowdowns due to approaching maximum permitted number of memtables.
- Scope: Global, Session
- Data Type:
numeric
- Introduced: MariaDB 10.2.10, MariaDB 10.3.3
Rocksdb_stall_memtable_limit_stops
- Description: * Description: Write stops due to reaching maximum permitted number of memtables.
- Scope: Global, Session
- Data Type:
numeric
- Introduced: MariaDB 10.2.10, MariaDB 10.3.3
Rocksdb_stall_micros
- Description: Time in microseconds that the writer had to wait for the compaction or flush to complete.
- Scope: Global, Session
- Data Type:
numeric
Rocksdb_stall_pending_compaction_limit_slowdowns
- Description: Write slowdowns due to nearing the limit for the maximum number of pending compaction bytes.
- Scope: Global, Session
- Data Type:
numeric
Rocksdb_stall_pending_compaction_limit_stops
- Description: Write stops due to reaching the limit for the maximum number of pending compaction bytes.
- Scope: Global, Session
- Data Type:
numeric
Rocksdb_stall_total_slowdowns
- Description: Total number of write slowdowns.
- Scope: Global, Session
- Data Type:
numeric
Rocksdb_stall_total_stops
- Description: Total number of write stops.
- Scope: Global, Session
- Data Type:
numeric
Rocksdb_system_rows_deleted
- Description: Number of rows deleted from system tables.
- Scope: Global, Session
- Data Type:
numeric
Rocksdb_system_rows_inserted
- Description: Number of rows inserted into system tables.
- Scope: Global, Session
- Data Type:
numeric
Rocksdb_system_rows_read
- Description: Number of rows read from system tables.
- Scope: Global, Session
- Data Type:
numeric
Rocksdb_system_rows_updated
- Description: Number of rows updated for system tables.
- Scope: Global, Session
- Data Type:
numeric
Rocksdb_wal_bytes
- Description: Number of bytes written to WAL.
- Scope: Global, Session
- Data Type:
numeric
Rocksdb_wal_group_syncs
- Description: Number of group commit WAL file syncs have occurred. This is provided by MyRocks and is not a view of a RocksDB counter. Increased in
rocksdb_flush_wal()
when doing therdb->FlushWAL()
call. - Scope: Global, Session
- Data Type:
numeric
Rocksdb_wal_synced
- Description: Number of syncs made on RocksDB WAL file.
- Scope: Global, Session
- Data Type:
numeric
Rocksdb_write_other
- Description: Number of writes processed by a thread other than the requesting thread.
- Scope: Global, Session
- Data Type:
numeric
Rocksdb_write_self
- Description: Number of writes processed by requesting thread.
- Scope: Global, Session
- Data Type:
numeric
Rocksdb_write_timedout
- Description: Number of writes that timed out.
- Scope: Global, Session
- Data Type:
numeric
Rocksdb_write_wal
- Description: Number of write calls that requested WAL.
- Scope: Global, Session
- Data Type:
numeric
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