path: root/src/third_party/wiredtiger/dist/stat_data.py

# Auto-generate statistics #defines, with initialization, clear and aggregate
# functions.
#
# NOTE: Statistics reports show individual objects as operations per second.
# All objects where that does not make sense should have the word 'currently'
# or the phrase 'in the cache' in their text description, for example, 'files
# currently open'.
# NOTE: All statistics descriptions must have a prefix string followed by ':'.
#
# Data-source statistics are normally aggregated across the set of underlying
# objects. Additional optional configuration flags are available:
#       max_aggregate   Take the maximum value when aggregating statistics
#       no_clear        Value not cleared when statistics cleared
#       no_scale        Don't scale value per second in the logging tool script
#       size            Used by timeseries tool, indicates value is a byte count
#
# The no_clear and no_scale flags are normally always set together (values that
# are maintained over time are normally not scaled per second).

from operator import attrgetter
import sys

class Stat:
    def __init__(self, name, tag, desc, flags=''):
        self.name = name
        self.desc = tag + ': ' + desc
        self.flags = flags

    def __cmp__(self, other):
        return cmp(self.desc.lower(), other.desc.lower())

class AsyncStat(Stat):
    prefix = 'async'
    def __init__(self, name, desc, flags=''):
        Stat.__init__(self, name, AsyncStat.prefix, desc, flags)
class BlockStat(Stat):
    prefix = 'block-manager'
    def __init__(self, name, desc, flags=''):
        Stat.__init__(self, name, BlockStat.prefix, desc, flags)
class BtreeStat(Stat):
    prefix = 'btree'
    def __init__(self, name, desc, flags=''):
        Stat.__init__(self, name, BtreeStat.prefix, desc, flags)
class CacheStat(Stat):
    prefix = 'cache'
    def __init__(self, name, desc, flags=''):
        Stat.__init__(self, name, CacheStat.prefix, desc, flags)
class CompressStat(Stat):
    prefix = 'compression'
    def __init__(self, name, desc, flags=''):
        Stat.__init__(self, name, CompressStat.prefix, desc, flags)
class ConnStat(Stat):
    prefix = 'connection'
    def __init__(self, name, desc, flags=''):
        Stat.__init__(self, name, ConnStat.prefix, desc, flags)
class CursorStat(Stat):
    prefix = 'cursor'
    def __init__(self, name, desc, flags=''):
        Stat.__init__(self, name, CursorStat.prefix, desc, flags)
class DhandleStat(Stat):
    prefix = 'data-handle'
    def __init__(self, name, desc, flags=''):
        Stat.__init__(self, name, DhandleStat.prefix, desc, flags)
class JoinStat(Stat):
    prefix = ''  # prefix is inserted dynamically
    def __init__(self, name, desc, flags=''):
        Stat.__init__(self, name, JoinStat.prefix, desc, flags)
class LogStat(Stat):
    prefix = 'log'
    def __init__(self, name, desc, flags=''):
        Stat.__init__(self, name, LogStat.prefix, desc, flags)
class LSMStat(Stat):
    prefix = 'LSM'
    def __init__(self, name, desc, flags=''):
        Stat.__init__(self, name, LSMStat.prefix, desc, flags)
class RecStat(Stat):
    prefix = 'reconciliation'
    def __init__(self, name, desc, flags=''):
        Stat.__init__(self, name, RecStat.prefix, desc, flags)
class SessionStat(Stat):
    prefix = 'session'
    def __init__(self, name, desc, flags=''):
        Stat.__init__(self, name, SessionStat.prefix, desc, flags)
class ThreadState(Stat):
    prefix = 'thread-state'
    def __init__(self, name, desc, flags=''):
        Stat.__init__(self, name, ThreadState.prefix, desc, flags)
class TxnStat(Stat):
    prefix = 'transaction'
    def __init__(self, name, desc, flags=''):
        Stat.__init__(self, name, TxnStat.prefix, desc, flags)
class YieldStat(Stat):
    prefix = 'thread-yield'
    def __init__(self, name, desc, flags=''):
        Stat.__init__(self, name, YieldStat.prefix, desc, flags)

##########################################
# Groupings of useful statistics:
# A pre-defined dictionary containing the group name as the key and the
# list of prefix tags that comprise that group.
##########################################
groups = {}
groups['cursor'] = [CursorStat.prefix, SessionStat.prefix]
groups['evict'] = [
    BlockStat.prefix,
    CacheStat.prefix,
    ConnStat.prefix,
    ThreadState.prefix
]
groups['lsm'] = [LSMStat.prefix, TxnStat.prefix]
groups['memory'] = [CacheStat.prefix, ConnStat.prefix, RecStat.prefix]
groups['system'] = [
    ConnStat.prefix,
    DhandleStat.prefix,
    SessionStat.prefix,
    ThreadState.prefix
]

##########################################
# CONNECTION statistics
##########################################
connection_stats = [
    ##########################################
    # System statistics
    ##########################################
    ConnStat('cond_auto_wait', 'auto adjusting condition wait calls'),
    ConnStat('cond_auto_wait_reset', 'auto adjusting condition resets'),
    ConnStat('cond_wait', 'pthread mutex condition wait calls'),
    ConnStat('file_open', 'files currently open', 'no_clear,no_scale'),
    ConnStat('fsync_io', 'total fsync I/Os'),
    ConnStat('memory_allocation', 'memory allocations'),
    ConnStat('memory_free', 'memory frees'),
    ConnStat('memory_grow', 'memory re-allocations'),
    ConnStat('read_io', 'total read I/Os'),
    ConnStat('rwlock_read', 'pthread mutex shared lock read-lock calls'),
    ConnStat('rwlock_write', 'pthread mutex shared lock write-lock calls'),
    ConnStat('write_io', 'total write I/Os'),

    ##########################################
    # Async API statistics
    ##########################################
    AsyncStat('async_alloc_race', 'number of allocation state races'),
    AsyncStat('async_alloc_view', 'number of operation slots viewed for allocation'),
    AsyncStat('async_cur_queue', 'current work queue length', 'no_scale'),
    AsyncStat('async_flush', 'number of flush calls'),
    AsyncStat('async_full', 'number of times operation allocation failed'),
    AsyncStat('async_max_queue', 'maximum work queue length', 'no_clear,no_scale'),
    AsyncStat('async_nowork', 'number of times worker found no work'),
    AsyncStat('async_op_alloc', 'total allocations'),
    AsyncStat('async_op_compact', 'total compact calls'),
    AsyncStat('async_op_insert', 'total insert calls'),
    AsyncStat('async_op_remove', 'total remove calls'),
    AsyncStat('async_op_search', 'total search calls'),
    AsyncStat('async_op_update', 'total update calls'),

    ##########################################
    # Block manager statistics
    ##########################################
    BlockStat('block_byte_map_read', 'mapped bytes read', 'size'),
    BlockStat('block_byte_read', 'bytes read', 'size'),
    BlockStat('block_byte_write', 'bytes written', 'size'),
    BlockStat('block_map_read', 'mapped blocks read'),
    BlockStat('block_preload', 'blocks pre-loaded'),
    BlockStat('block_read', 'blocks read'),
    BlockStat('block_write', 'blocks written'),

    ##########################################
    # Cache and eviction statistics
    ##########################################
    CacheStat('cache_bytes_dirty', 'tracked dirty bytes in the cache', 'no_clear,no_scale,size'),
    CacheStat('cache_bytes_internal', 'tracked bytes belonging to internal pages in the cache', 'no_clear,no_scale,size'),
    CacheStat('cache_bytes_inuse', 'bytes currently in the cache', 'no_clear,no_scale,size'),
    CacheStat('cache_bytes_leaf', 'tracked bytes belonging to leaf pages in the cache', 'no_clear,no_scale,size'),
    CacheStat('cache_bytes_max', 'maximum bytes configured', 'no_clear,no_scale,size'),
    CacheStat('cache_bytes_overflow', 'tracked bytes belonging to overflow pages in the cache', 'no_clear,no_scale,size'),
    CacheStat('cache_bytes_read', 'bytes read into cache', 'size'),
    CacheStat('cache_bytes_write', 'bytes written from cache', 'size'),
    CacheStat('cache_eviction_aggressive_set', 'eviction currently operating in aggressive mode', 'no_clear,no_scale'),
    CacheStat('cache_eviction_app', 'pages evicted by application threads'),
    CacheStat('cache_eviction_app_dirty', 'modified pages evicted by application threads'),
    CacheStat('cache_eviction_checkpoint', 'checkpoint blocked page eviction'),
    CacheStat('cache_eviction_clean', 'unmodified pages evicted'),
    CacheStat('cache_eviction_deepen', 'page split during eviction deepened the tree'),
    CacheStat('cache_eviction_dirty', 'modified pages evicted'),
    CacheStat('cache_eviction_fail', 'pages selected for eviction unable to be evicted'),
    CacheStat('cache_eviction_force', 'pages evicted because they exceeded the in-memory maximum'),
    CacheStat('cache_eviction_force_delete', 'pages evicted because they had chains of deleted items'),
    CacheStat('cache_eviction_force_fail', 'failed eviction of pages that exceeded the in-memory maximum'),
    CacheStat('cache_eviction_get_ref', 'eviction calls to get a page'),
    CacheStat('cache_eviction_get_ref_empty', 'eviction calls to get a page found queue empty'),
    CacheStat('cache_eviction_get_ref_empty2', 'eviction calls to get a page found queue empty after locking'),
    CacheStat('cache_eviction_hazard', 'hazard pointer blocked page eviction'),
    CacheStat('cache_eviction_internal', 'internal pages evicted'),
    CacheStat('cache_eviction_maximum_page_size', 'maximum page size at eviction', 'no_clear,no_scale,size'),
    CacheStat('cache_eviction_pages_queued', 'pages queued for eviction'),
    CacheStat('cache_eviction_pages_queued_oldest', 'pages queued for urgent eviction'),
    CacheStat('cache_eviction_pages_seen', 'pages seen by eviction walk'),
    CacheStat('cache_eviction_queue_empty', 'eviction server candidate queue empty when topping up'),
    CacheStat('cache_eviction_queue_not_empty', 'eviction server candidate queue not empty when topping up'),
    CacheStat('cache_eviction_server_evicting', 'eviction server evicting pages'),
    CacheStat('cache_eviction_server_not_evicting', 'eviction server populating queue, but not evicting pages'),
    CacheStat('cache_eviction_server_slept', 'eviction server slept, because we did not make progress with eviction'),
    CacheStat('cache_eviction_server_toobig', 'eviction server skipped very large page'),
    CacheStat('cache_eviction_slow', 'eviction server unable to reach eviction goal'),
    CacheStat('cache_eviction_split_internal', 'internal pages split during eviction'),
    CacheStat('cache_eviction_split_leaf', 'leaf pages split during eviction'),
    CacheStat('cache_eviction_walk', 'pages walked for eviction'),
    CacheStat('cache_eviction_walks_active', 'files with active eviction walks', 'no_clear,no_scale,size'),
    CacheStat('cache_eviction_walks_started', 'files with new eviction walks started'),
    CacheStat('cache_eviction_worker_evicting', 'eviction worker thread evicting pages'),
    CacheStat('cache_hazard_checks', 'hazard pointer check calls'),
    CacheStat('cache_hazard_max', 'hazard pointer maximum array length', 'max_aggregate,no_scale'),
    CacheStat('cache_hazard_walks', 'hazard pointer check entries walked'),
    CacheStat('cache_inmem_split', 'in-memory page splits'),
    CacheStat('cache_inmem_splittable', 'in-memory page passed criteria to be split'),
    CacheStat('cache_lookaside_insert', 'lookaside table insert calls'),
    CacheStat('cache_lookaside_remove', 'lookaside table remove calls'),
    CacheStat('cache_overhead', 'percentage overhead', 'no_clear,no_scale'),
    CacheStat('cache_pages_dirty', 'tracked dirty pages in the cache', 'no_clear,no_scale'),
    CacheStat('cache_pages_inuse', 'pages currently held in the cache', 'no_clear,no_scale'),
    CacheStat('cache_pages_requested', 'pages requested from the cache'),
    CacheStat('cache_read', 'pages read into cache'),
    CacheStat('cache_read_lookaside', 'pages read into cache requiring lookaside entries'),
    CacheStat('cache_write', 'pages written from cache'),
    CacheStat('cache_write_lookaside', 'page written requiring lookaside records'),
    CacheStat('cache_write_restore', 'pages written requiring in-memory restoration'),

    ##########################################
    # Dhandle statistics
    ##########################################
    DhandleStat('dh_conn_handle_count', 'connection data handles currently active', 'no_clear,no_scale'),
    DhandleStat('dh_session_handles', 'session dhandles swept'),
    DhandleStat('dh_session_sweeps', 'session sweep attempts'),
    DhandleStat('dh_sweep_close', 'connection sweep dhandles closed'),
    DhandleStat('dh_sweep_ref', 'connection sweep candidate became referenced'),
    DhandleStat('dh_sweep_remove', 'connection sweep dhandles removed from hash list'),
    DhandleStat('dh_sweep_tod', 'connection sweep time-of-death sets'),
    DhandleStat('dh_sweeps', 'connection sweeps'),

    ##########################################
    # Logging statistics
    ##########################################
    LogStat('log_buffer_size', 'total log buffer size', 'no_clear,no_scale,size'),
    LogStat('log_bytes_payload', 'log bytes of payload data', 'size'),
    LogStat('log_bytes_written', 'log bytes written', 'size'),
    LogStat('log_close_yields', 'yields waiting for previous log file close'),
    LogStat('log_compress_len', 'total size of compressed records', 'size'),
    LogStat('log_compress_mem', 'total in-memory size of compressed records', 'size'),
    LogStat('log_compress_small', 'log records too small to compress'),
    LogStat('log_compress_write_fails', 'log records not compressed'),
    LogStat('log_compress_writes', 'log records compressed'),
    LogStat('log_flush', 'log flush operations'),
    LogStat('log_force_write', 'log force write operations'),
    LogStat('log_force_write_skip', 'log force write operations skipped'),
    LogStat('log_max_filesize', 'maximum log file size', 'no_clear,no_scale,size'),
    LogStat('log_prealloc_files', 'pre-allocated log files prepared'),
    LogStat('log_prealloc_max', 'number of pre-allocated log files to create', 'no_clear,no_scale'),
    LogStat('log_prealloc_missed', 'pre-allocated log files not ready and missed'),
    LogStat('log_prealloc_used', 'pre-allocated log files used'),
    LogStat('log_release_write_lsn', 'log release advances write LSN'),
    LogStat('log_scan_records', 'records processed by log scan'),
    LogStat('log_scan_rereads', 'log scan records requiring two reads'),
    LogStat('log_scans', 'log scan operations'),
    LogStat('log_slot_closes', 'consolidated slot closures'),
    LogStat('log_slot_coalesced', 'written slots coalesced'),
    LogStat('log_slot_consolidated', 'logging bytes consolidated', 'size'),
    LogStat('log_slot_joins', 'consolidated slot joins'),
    LogStat('log_slot_races', 'consolidated slot join races'),
    LogStat('log_slot_switch_busy', 'busy returns attempting to switch slots'),
    LogStat('log_slot_transitions', 'consolidated slot join transitions'),
    LogStat('log_slot_unbuffered', 'consolidated slot unbuffered writes'),
    LogStat('log_sync', 'log sync operations'),
    LogStat('log_sync_dir', 'log sync_dir operations'),
    LogStat('log_sync_dir_duration', 'log sync_dir time duration (usecs)'),
    LogStat('log_sync_duration', 'log sync time duration (usecs)'),
    LogStat('log_write_lsn', 'log server thread advances write LSN'),
    LogStat('log_write_lsn_skip', 'log server thread write LSN walk skipped'),
    LogStat('log_writes', 'log write operations'),
    LogStat('log_zero_fills', 'log files manually zero-filled'),

    ##########################################
    # Reconciliation statistics
    ##########################################
    RecStat('rec_page_delete', 'pages deleted'),
    RecStat('rec_page_delete_fast', 'fast-path pages deleted'),
    RecStat('rec_pages', 'page reconciliation calls'),
    RecStat('rec_pages_eviction', 'page reconciliation calls for eviction'),
    RecStat('rec_split_stashed_bytes', 'split bytes currently awaiting free', 'no_clear,no_scale,size'),
    RecStat('rec_split_stashed_objects', 'split objects currently awaiting free', 'no_clear,no_scale'),

    ##########################################
    # Transaction statistics
    ##########################################
    TxnStat('txn_begin', 'transaction begins'),
    TxnStat('txn_checkpoint', 'transaction checkpoints'),
    TxnStat('txn_checkpoint_fsync_post', 'transaction fsync calls for checkpoint after allocating the transaction ID'),
    TxnStat('txn_checkpoint_fsync_post_duration', 'transaction fsync duration for checkpoint after allocating the transaction ID (usecs)'),
    TxnStat('txn_checkpoint_fsync_pre', 'transaction fsync calls for checkpoint before allocating the transaction ID'),
    TxnStat('txn_checkpoint_fsync_pre_duration', 'transaction fsync duration for checkpoint before allocating the transaction ID (usecs)'),
    TxnStat('txn_checkpoint_generation', 'transaction checkpoint generation', 'no_clear,no_scale'),
    TxnStat('txn_checkpoint_running', 'transaction checkpoint currently running', 'no_clear,no_scale'),
    TxnStat('txn_checkpoint_time_max', 'transaction checkpoint max time (msecs)', 'no_clear,no_scale'),
    TxnStat('txn_checkpoint_time_min', 'transaction checkpoint min time (msecs)', 'no_clear,no_scale'),
    TxnStat('txn_checkpoint_time_recent', 'transaction checkpoint most recent time (msecs)', 'no_clear,no_scale'),
    TxnStat('txn_checkpoint_time_total', 'transaction checkpoint total time (msecs)', 'no_clear,no_scale'),
    TxnStat('txn_commit', 'transactions committed'),
    TxnStat('txn_fail_cache', 'transaction failures due to cache overflow'),
    TxnStat('txn_pinned_checkpoint_range', 'transaction range of IDs currently pinned by a checkpoint', 'no_clear,no_scale'),
    TxnStat('txn_pinned_range', 'transaction range of IDs currently pinned', 'no_clear,no_scale'),
    TxnStat('txn_pinned_snapshot_range', 'transaction range of IDs currently pinned by named snapshots', 'no_clear,no_scale'),
    TxnStat('txn_rollback', 'transactions rolled back'),
    TxnStat('txn_snapshots_created', 'number of named snapshots created'),
    TxnStat('txn_snapshots_dropped', 'number of named snapshots dropped'),
    TxnStat('txn_sync', 'transaction sync calls'),

    ##########################################
    # LSM statistics
    ##########################################
    LSMStat('lsm_checkpoint_throttle', 'sleep for LSM checkpoint throttle'),
    LSMStat('lsm_merge_throttle', 'sleep for LSM merge throttle'),
    LSMStat('lsm_rows_merged', 'rows merged in an LSM tree'),
    LSMStat('lsm_work_queue_app', 'application work units currently queued', 'no_clear,no_scale'),
    LSMStat('lsm_work_queue_manager', 'merge work units currently queued', 'no_clear,no_scale'),
    LSMStat('lsm_work_queue_max', 'tree queue hit maximum'),
    LSMStat('lsm_work_queue_switch', 'switch work units currently queued', 'no_clear,no_scale'),
    LSMStat('lsm_work_units_created', 'tree maintenance operations scheduled'),
    LSMStat('lsm_work_units_discarded', 'tree maintenance operations discarded'),
    LSMStat('lsm_work_units_done', 'tree maintenance operations executed'),

    ##########################################
    # Session operations
    ##########################################
    SessionStat('session_cursor_open', 'open cursor count', 'no_clear,no_scale'),
    SessionStat('session_open', 'open session count', 'no_clear,no_scale'),

    ##########################################
    # Total cursor operations
    ##########################################
    CursorStat('cursor_create', 'cursor create calls'),
    CursorStat('cursor_insert', 'cursor insert calls'),
    CursorStat('cursor_next', 'cursor next calls'),
    CursorStat('cursor_prev', 'cursor prev calls'),
    CursorStat('cursor_remove', 'cursor remove calls'),
    CursorStat('cursor_reset', 'cursor reset calls'),
    CursorStat('cursor_restart', 'cursor restarted searches'),
    CursorStat('cursor_search', 'cursor search calls'),
    CursorStat('cursor_search_near', 'cursor search near calls'),
    CursorStat('cursor_truncate', 'truncate calls'),
    CursorStat('cursor_update', 'cursor update calls'),

    ##########################################
    # Thread State statistics
    ##########################################
    ThreadState('fsync_active', 'active filesystem fsync calls','no_clear,no_scale'),
    ThreadState('read_active', 'active filesystem read calls','no_clear,no_scale'),
    ThreadState('write_active', 'active filesystem write calls','no_clear,no_scale'),

    ##########################################
    # Yield statistics
    ##########################################
    YieldStat('page_busy_blocked', 'page acquire busy blocked'),
    YieldStat('page_forcible_evict_blocked', 'page acquire eviction blocked'),
    YieldStat('page_locked_blocked', 'page acquire locked blocked'),
    YieldStat('page_read_blocked', 'page acquire read blocked'),
    YieldStat('page_sleep', 'page acquire time sleeping (usecs)'),
]

connection_stats = sorted(connection_stats, key=attrgetter('desc'))

##########################################
# Data source statistics
##########################################
dsrc_stats = [
    ##########################################
    # Session operations
    ##########################################
    SessionStat('session_compact', 'object compaction'),
    SessionStat('session_cursor_open', 'open cursor count', 'no_clear,no_scale'),

    ##########################################
    # Cursor operations
    ##########################################
    CursorStat('cursor_create', 'create calls'),
    CursorStat('cursor_insert', 'insert calls'),
    CursorStat('cursor_insert_bulk', 'bulk-loaded cursor-insert calls'),
    CursorStat('cursor_insert_bytes', 'cursor-insert key and value bytes inserted', 'size'),
    CursorStat('cursor_next', 'next calls'),
    CursorStat('cursor_prev', 'prev calls'),
    CursorStat('cursor_remove', 'remove calls'),
    CursorStat('cursor_remove_bytes', 'cursor-remove key bytes removed', 'size'),
    CursorStat('cursor_reset', 'reset calls'),
    CursorStat('cursor_restart', 'restarted searches'),
    CursorStat('cursor_search', 'search calls'),
    CursorStat('cursor_search_near', 'search near calls'),
    CursorStat('cursor_truncate', 'truncate calls'),
    CursorStat('cursor_update', 'update calls'),
    CursorStat('cursor_update_bytes', 'cursor-update value bytes updated', 'size'),

    ##########################################
    # Btree statistics
    ##########################################
    BtreeStat('btree_checkpoint_generation', 'btree checkpoint generation', 'no_clear,no_scale'),
    BtreeStat('btree_column_deleted', 'column-store variable-size deleted values', 'no_scale'),
    BtreeStat('btree_column_fix', 'column-store fixed-size leaf pages', 'no_scale'),
    BtreeStat('btree_column_internal', 'column-store internal pages', 'no_scale'),
    BtreeStat('btree_column_rle', 'column-store variable-size RLE encoded values', 'no_scale'),
    BtreeStat('btree_column_variable', 'column-store variable-size leaf pages', 'no_scale'),
    BtreeStat('btree_compact_rewrite', 'pages rewritten by compaction'),
    BtreeStat('btree_entries', 'number of key/value pairs', 'no_scale'),
    BtreeStat('btree_fixed_len', 'fixed-record size', 'max_aggregate,no_scale,size'),
    BtreeStat('btree_maximum_depth', 'maximum tree depth', 'max_aggregate,no_scale'),
    BtreeStat('btree_maxintlkey', 'maximum internal page key size', 'max_aggregate,no_scale,size'),
    BtreeStat('btree_maxintlpage', 'maximum internal page size', 'max_aggregate,no_scale,size'),
    BtreeStat('btree_maxleafkey', 'maximum leaf page key size', 'max_aggregate,no_scale,size'),
    BtreeStat('btree_maxleafpage', 'maximum leaf page size', 'max_aggregate,no_scale,size'),
    BtreeStat('btree_maxleafvalue', 'maximum leaf page value size', 'max_aggregate,no_scale,size'),
    BtreeStat('btree_overflow', 'overflow pages', 'no_scale'),
    BtreeStat('btree_row_internal', 'row-store internal pages', 'no_scale'),
    BtreeStat('btree_row_leaf', 'row-store leaf pages', 'no_scale'),

    ##########################################
    # LSM statistics
    ##########################################
    LSMStat('bloom_count', 'bloom filters in the LSM tree', 'no_scale'),
    LSMStat('bloom_false_positive', 'bloom filter false positives'),
    LSMStat('bloom_hit', 'bloom filter hits'),
    LSMStat('bloom_miss', 'bloom filter misses'),
    LSMStat('bloom_page_evict', 'bloom filter pages evicted from cache'),
    LSMStat('bloom_page_read', 'bloom filter pages read into cache'),
    LSMStat('bloom_size', 'total size of bloom filters', 'no_scale,size'),
    LSMStat('lsm_checkpoint_throttle', 'sleep for LSM checkpoint throttle'),
    LSMStat('lsm_chunk_count', 'chunks in the LSM tree', 'no_scale'),
    LSMStat('lsm_generation_max', 'highest merge generation in the LSM tree', 'max_aggregate,no_scale'),
    LSMStat('lsm_lookup_no_bloom', 'queries that could have benefited from a Bloom filter that did not exist'),
    LSMStat('lsm_merge_throttle', 'sleep for LSM merge throttle'),

    ##########################################
    # Block manager statistics
    ##########################################
    BlockStat('allocation_size', 'file allocation unit size', 'max_aggregate,no_scale,size'),
    BlockStat('block_alloc', 'blocks allocated'),
    BlockStat('block_checkpoint_size', 'checkpoint size', 'no_scale,size'),
    BlockStat('block_extension', 'allocations requiring file extension'),
    BlockStat('block_free', 'blocks freed'),
    BlockStat('block_magic', 'file magic number', 'max_aggregate,no_scale'),
    BlockStat('block_major', 'file major version number', 'max_aggregate,no_scale'),
    BlockStat('block_minor', 'minor version number', 'max_aggregate,no_scale'),
    BlockStat('block_reuse_bytes', 'file bytes available for reuse', 'no_scale,size'),
    BlockStat('block_size', 'file size in bytes', 'no_scale,size'),

    ##########################################
    # Cache and eviction statistics
    ##########################################
    CacheStat('cache_bytes_read', 'bytes read into cache', 'size'),
    CacheStat('cache_bytes_write', 'bytes written from cache', 'size'),
    CacheStat('cache_eviction_checkpoint', 'checkpoint blocked page eviction'),
    CacheStat('cache_eviction_clean', 'unmodified pages evicted'),
    CacheStat('cache_eviction_deepen', 'page split during eviction deepened the tree'),
    CacheStat('cache_eviction_dirty', 'modified pages evicted'),
    CacheStat('cache_eviction_fail', 'data source pages selected for eviction unable to be evicted'),
    CacheStat('cache_eviction_hazard', 'hazard pointer blocked page eviction'),
    CacheStat('cache_eviction_internal', 'internal pages evicted'),
    CacheStat('cache_eviction_split_internal', 'internal pages split during eviction'),
    CacheStat('cache_eviction_split_leaf', 'leaf pages split during eviction'),
    CacheStat('cache_inmem_split', 'in-memory page splits'),
    CacheStat('cache_inmem_splittable', 'in-memory page passed criteria to be split'),
    CacheStat('cache_overflow_value', 'overflow values cached in memory', 'no_scale'),
    CacheStat('cache_pages_requested', 'pages requested from the cache'),
    CacheStat('cache_read', 'pages read into cache'),
    CacheStat('cache_read_lookaside', 'pages read into cache requiring lookaside entries'),
    CacheStat('cache_read_overflow', 'overflow pages read into cache'),
    CacheStat('cache_write', 'pages written from cache'),
    CacheStat('cache_write_lookaside', 'page written requiring lookaside records'),
    CacheStat('cache_write_restore', 'pages written requiring in-memory restoration'),

    ##########################################
    # Compression statistics
    ##########################################
    CompressStat('compress_raw_fail', 'raw compression call failed, no additional data available'),
    CompressStat('compress_raw_fail_temporary', 'raw compression call failed, additional data available'),
    CompressStat('compress_raw_ok', 'raw compression call succeeded'),
    CompressStat('compress_read', 'compressed pages read'),
    CompressStat('compress_write', 'compressed pages written'),
    CompressStat('compress_write_fail', 'page written failed to compress'),
    CompressStat('compress_write_too_small', 'page written was too small to compress'),

    ##########################################
    # Reconciliation statistics
    ##########################################
    RecStat('rec_dictionary', 'dictionary matches'),
    RecStat('rec_multiblock_internal', 'internal page multi-block writes'),
    RecStat('rec_multiblock_leaf', 'leaf page multi-block writes'),
    RecStat('rec_multiblock_max', 'maximum blocks required for a page', 'max_aggregate,no_scale'),
    RecStat('rec_overflow_key_internal', 'internal-page overflow keys'),
    RecStat('rec_overflow_key_leaf', 'leaf-page overflow keys'),
    RecStat('rec_overflow_value', 'overflow values written'),
    RecStat('rec_page_delete', 'pages deleted'),
    RecStat('rec_page_delete_fast', 'fast-path pages deleted'),
    RecStat('rec_page_match', 'page checksum matches'),
    RecStat('rec_pages', 'page reconciliation calls'),
    RecStat('rec_pages_eviction', 'page reconciliation calls for eviction'),
    RecStat('rec_prefix_compression', 'leaf page key bytes discarded using prefix compression', 'size'),
    RecStat('rec_suffix_compression', 'internal page key bytes discarded using suffix compression', 'size'),

    ##########################################
    # Transaction statistics
    ##########################################
    TxnStat('txn_update_conflict', 'update conflicts'),
]

dsrc_stats = sorted(dsrc_stats, key=attrgetter('desc'))

##########################################
# Cursor Join statistics
##########################################
join_stats = [
    JoinStat('bloom_false_positive', 'bloom filter false positives'),
    JoinStat('bloom_insert', 'items inserted into a bloom filter'),
    JoinStat('iterated', 'items iterated'),
    JoinStat('main_access', 'accesses to the main table'),
    JoinStat('membership_check', 'checks that conditions of membership are satisfied'),
]

join_stats = sorted(join_stats, key=attrgetter('desc'))