// Copyright (c) 2011-present, Facebook, Inc. All rights reserved. // This source code is licensed under both the GPLv2 (found in the // COPYING file in the root directory) and Apache 2.0 License // (found in the LICENSE.Apache file in the root directory). // #include "monitoring/statistics.h" #include #include #include #include "rocksdb/statistics.h" namespace ROCKSDB_NAMESPACE { // The order of items listed in Tickers should be the same as // the order listed in TickersNameMap const std::vector> TickersNameMap = { {BLOCK_CACHE_MISS, "rocksdb.block.cache.miss"}, {BLOCK_CACHE_HIT, "rocksdb.block.cache.hit"}, {BLOCK_CACHE_ADD, "rocksdb.block.cache.add"}, {BLOCK_CACHE_ADD_FAILURES, "rocksdb.block.cache.add.failures"}, {BLOCK_CACHE_INDEX_MISS, "rocksdb.block.cache.index.miss"}, {BLOCK_CACHE_INDEX_HIT, "rocksdb.block.cache.index.hit"}, {BLOCK_CACHE_INDEX_ADD, "rocksdb.block.cache.index.add"}, {BLOCK_CACHE_INDEX_BYTES_INSERT, "rocksdb.block.cache.index.bytes.insert"}, {BLOCK_CACHE_INDEX_BYTES_EVICT, "rocksdb.block.cache.index.bytes.evict"}, {BLOCK_CACHE_FILTER_MISS, "rocksdb.block.cache.filter.miss"}, {BLOCK_CACHE_FILTER_HIT, "rocksdb.block.cache.filter.hit"}, {BLOCK_CACHE_FILTER_ADD, "rocksdb.block.cache.filter.add"}, {BLOCK_CACHE_FILTER_BYTES_INSERT, "rocksdb.block.cache.filter.bytes.insert"}, {BLOCK_CACHE_FILTER_BYTES_EVICT, "rocksdb.block.cache.filter.bytes.evict"}, {BLOCK_CACHE_DATA_MISS, "rocksdb.block.cache.data.miss"}, {BLOCK_CACHE_DATA_HIT, "rocksdb.block.cache.data.hit"}, {BLOCK_CACHE_DATA_ADD, "rocksdb.block.cache.data.add"}, {BLOCK_CACHE_DATA_BYTES_INSERT, "rocksdb.block.cache.data.bytes.insert"}, {BLOCK_CACHE_BYTES_READ, "rocksdb.block.cache.bytes.read"}, {BLOCK_CACHE_BYTES_WRITE, "rocksdb.block.cache.bytes.write"}, {BLOOM_FILTER_USEFUL, "rocksdb.bloom.filter.useful"}, {BLOOM_FILTER_FULL_POSITIVE, "rocksdb.bloom.filter.full.positive"}, {BLOOM_FILTER_FULL_TRUE_POSITIVE, "rocksdb.bloom.filter.full.true.positive"}, {BLOOM_FILTER_MICROS, "rocksdb.bloom.filter.micros"}, {PERSISTENT_CACHE_HIT, "rocksdb.persistent.cache.hit"}, {PERSISTENT_CACHE_MISS, "rocksdb.persistent.cache.miss"}, {SIM_BLOCK_CACHE_HIT, "rocksdb.sim.block.cache.hit"}, {SIM_BLOCK_CACHE_MISS, "rocksdb.sim.block.cache.miss"}, {MEMTABLE_HIT, "rocksdb.memtable.hit"}, {MEMTABLE_MISS, "rocksdb.memtable.miss"}, {GET_HIT_L0, "rocksdb.l0.hit"}, {GET_HIT_L1, "rocksdb.l1.hit"}, {GET_HIT_L2_AND_UP, "rocksdb.l2andup.hit"}, {COMPACTION_KEY_DROP_NEWER_ENTRY, "rocksdb.compaction.key.drop.new"}, {COMPACTION_KEY_DROP_OBSOLETE, "rocksdb.compaction.key.drop.obsolete"}, {COMPACTION_KEY_DROP_RANGE_DEL, "rocksdb.compaction.key.drop.range_del"}, {COMPACTION_KEY_DROP_USER, "rocksdb.compaction.key.drop.user"}, {COMPACTION_RANGE_DEL_DROP_OBSOLETE, "rocksdb.compaction.range_del.drop.obsolete"}, {COMPACTION_OPTIMIZED_DEL_DROP_OBSOLETE, "rocksdb.compaction.optimized.del.drop.obsolete"}, {COMPACTION_CANCELLED, "rocksdb.compaction.cancelled"}, {NUMBER_KEYS_WRITTEN, "rocksdb.number.keys.written"}, {NUMBER_KEYS_READ, "rocksdb.number.keys.read"}, {NUMBER_KEYS_UPDATED, "rocksdb.number.keys.updated"}, {BYTES_WRITTEN, "rocksdb.bytes.written"}, {BYTES_READ, "rocksdb.bytes.read"}, {NUMBER_DB_SEEK, "rocksdb.number.db.seek"}, {NUMBER_DB_NEXT, "rocksdb.number.db.next"}, {NUMBER_DB_PREV, "rocksdb.number.db.prev"}, {NUMBER_DB_SEEK_FOUND, "rocksdb.number.db.seek.found"}, {NUMBER_DB_NEXT_FOUND, "rocksdb.number.db.next.found"}, {NUMBER_DB_PREV_FOUND, "rocksdb.number.db.prev.found"}, {ITER_BYTES_READ, "rocksdb.db.iter.bytes.read"}, {NO_FILE_CLOSES, "rocksdb.no.file.closes"}, {NO_FILE_OPENS, "rocksdb.no.file.opens"}, {NO_FILE_ERRORS, "rocksdb.no.file.errors"}, {STALL_L0_SLOWDOWN_MICROS, "rocksdb.l0.slowdown.micros"}, {STALL_MEMTABLE_COMPACTION_MICROS, "rocksdb.memtable.compaction.micros"}, {STALL_L0_NUM_FILES_MICROS, "rocksdb.l0.num.files.stall.micros"}, {STALL_MICROS, "rocksdb.stall.micros"}, {DB_MUTEX_WAIT_MICROS, "rocksdb.db.mutex.wait.micros"}, {RATE_LIMIT_DELAY_MILLIS, "rocksdb.rate.limit.delay.millis"}, {NO_ITERATORS, "rocksdb.num.iterators"}, {NUMBER_MULTIGET_CALLS, "rocksdb.number.multiget.get"}, {NUMBER_MULTIGET_KEYS_READ, "rocksdb.number.multiget.keys.read"}, {NUMBER_MULTIGET_BYTES_READ, "rocksdb.number.multiget.bytes.read"}, {NUMBER_FILTERED_DELETES, "rocksdb.number.deletes.filtered"}, {NUMBER_MERGE_FAILURES, "rocksdb.number.merge.failures"}, {BLOOM_FILTER_PREFIX_CHECKED, "rocksdb.bloom.filter.prefix.checked"}, {BLOOM_FILTER_PREFIX_USEFUL, "rocksdb.bloom.filter.prefix.useful"}, {NUMBER_OF_RESEEKS_IN_ITERATION, "rocksdb.number.reseeks.iteration"}, {GET_UPDATES_SINCE_CALLS, "rocksdb.getupdatessince.calls"}, {BLOCK_CACHE_COMPRESSED_MISS, "rocksdb.block.cachecompressed.miss"}, {BLOCK_CACHE_COMPRESSED_HIT, "rocksdb.block.cachecompressed.hit"}, {BLOCK_CACHE_COMPRESSED_ADD, "rocksdb.block.cachecompressed.add"}, {BLOCK_CACHE_COMPRESSED_ADD_FAILURES, "rocksdb.block.cachecompressed.add.failures"}, {WAL_FILE_SYNCED, "rocksdb.wal.synced"}, {WAL_FILE_BYTES, "rocksdb.wal.bytes"}, {WRITE_DONE_BY_SELF, "rocksdb.write.self"}, {WRITE_DONE_BY_OTHER, "rocksdb.write.other"}, {WRITE_TIMEDOUT, "rocksdb.write.timeout"}, {WRITE_WITH_WAL, "rocksdb.write.wal"}, {COMPACT_READ_BYTES, "rocksdb.compact.read.bytes"}, {COMPACT_WRITE_BYTES, "rocksdb.compact.write.bytes"}, {FLUSH_WRITE_BYTES, "rocksdb.flush.write.bytes"}, {COMPACT_READ_BYTES_MARKED, "rocksdb.compact.read.marked.bytes"}, {COMPACT_READ_BYTES_PERIODIC, "rocksdb.compact.read.periodic.bytes"}, {COMPACT_READ_BYTES_TTL, "rocksdb.compact.read.ttl.bytes"}, {COMPACT_WRITE_BYTES_MARKED, "rocksdb.compact.write.marked.bytes"}, {COMPACT_WRITE_BYTES_PERIODIC, "rocksdb.compact.write.periodic.bytes"}, {COMPACT_WRITE_BYTES_TTL, "rocksdb.compact.write.ttl.bytes"}, {NUMBER_DIRECT_LOAD_TABLE_PROPERTIES, "rocksdb.number.direct.load.table.properties"}, {NUMBER_SUPERVERSION_ACQUIRES, "rocksdb.number.superversion_acquires"}, {NUMBER_SUPERVERSION_RELEASES, "rocksdb.number.superversion_releases"}, {NUMBER_SUPERVERSION_CLEANUPS, "rocksdb.number.superversion_cleanups"}, {NUMBER_BLOCK_COMPRESSED, "rocksdb.number.block.compressed"}, {NUMBER_BLOCK_DECOMPRESSED, "rocksdb.number.block.decompressed"}, {NUMBER_BLOCK_NOT_COMPRESSED, "rocksdb.number.block.not_compressed"}, {MERGE_OPERATION_TOTAL_TIME, "rocksdb.merge.operation.time.nanos"}, {FILTER_OPERATION_TOTAL_TIME, "rocksdb.filter.operation.time.nanos"}, {ROW_CACHE_HIT, "rocksdb.row.cache.hit"}, {ROW_CACHE_MISS, "rocksdb.row.cache.miss"}, {READ_AMP_ESTIMATE_USEFUL_BYTES, "rocksdb.read.amp.estimate.useful.bytes"}, {READ_AMP_TOTAL_READ_BYTES, "rocksdb.read.amp.total.read.bytes"}, {NUMBER_RATE_LIMITER_DRAINS, "rocksdb.number.rate_limiter.drains"}, {NUMBER_ITER_SKIP, "rocksdb.number.iter.skip"}, {BLOB_DB_NUM_PUT, "rocksdb.blobdb.num.put"}, {BLOB_DB_NUM_WRITE, "rocksdb.blobdb.num.write"}, {BLOB_DB_NUM_GET, "rocksdb.blobdb.num.get"}, {BLOB_DB_NUM_MULTIGET, "rocksdb.blobdb.num.multiget"}, {BLOB_DB_NUM_SEEK, "rocksdb.blobdb.num.seek"}, {BLOB_DB_NUM_NEXT, "rocksdb.blobdb.num.next"}, {BLOB_DB_NUM_PREV, "rocksdb.blobdb.num.prev"}, {BLOB_DB_NUM_KEYS_WRITTEN, "rocksdb.blobdb.num.keys.written"}, {BLOB_DB_NUM_KEYS_READ, "rocksdb.blobdb.num.keys.read"}, {BLOB_DB_BYTES_WRITTEN, "rocksdb.blobdb.bytes.written"}, {BLOB_DB_BYTES_READ, "rocksdb.blobdb.bytes.read"}, {BLOB_DB_WRITE_INLINED, "rocksdb.blobdb.write.inlined"}, {BLOB_DB_WRITE_INLINED_TTL, "rocksdb.blobdb.write.inlined.ttl"}, {BLOB_DB_WRITE_BLOB, "rocksdb.blobdb.write.blob"}, {BLOB_DB_WRITE_BLOB_TTL, "rocksdb.blobdb.write.blob.ttl"}, {BLOB_DB_BLOB_FILE_BYTES_WRITTEN, "rocksdb.blobdb.blob.file.bytes.written"}, {BLOB_DB_BLOB_FILE_BYTES_READ, "rocksdb.blobdb.blob.file.bytes.read"}, {BLOB_DB_BLOB_FILE_SYNCED, "rocksdb.blobdb.blob.file.synced"}, {BLOB_DB_BLOB_INDEX_EXPIRED_COUNT, "rocksdb.blobdb.blob.index.expired.count"}, {BLOB_DB_BLOB_INDEX_EXPIRED_SIZE, "rocksdb.blobdb.blob.index.expired.size"}, {BLOB_DB_BLOB_INDEX_EVICTED_COUNT, "rocksdb.blobdb.blob.index.evicted.count"}, {BLOB_DB_BLOB_INDEX_EVICTED_SIZE, "rocksdb.blobdb.blob.index.evicted.size"}, {BLOB_DB_GC_NUM_FILES, "rocksdb.blobdb.gc.num.files"}, {BLOB_DB_GC_NUM_NEW_FILES, "rocksdb.blobdb.gc.num.new.files"}, {BLOB_DB_GC_FAILURES, "rocksdb.blobdb.gc.failures"}, {BLOB_DB_GC_NUM_KEYS_OVERWRITTEN, "rocksdb.blobdb.gc.num.keys.overwritten"}, {BLOB_DB_GC_NUM_KEYS_EXPIRED, "rocksdb.blobdb.gc.num.keys.expired"}, {BLOB_DB_GC_NUM_KEYS_RELOCATED, "rocksdb.blobdb.gc.num.keys.relocated"}, {BLOB_DB_GC_BYTES_OVERWRITTEN, "rocksdb.blobdb.gc.bytes.overwritten"}, {BLOB_DB_GC_BYTES_EXPIRED, "rocksdb.blobdb.gc.bytes.expired"}, {BLOB_DB_GC_BYTES_RELOCATED, "rocksdb.blobdb.gc.bytes.relocated"}, {BLOB_DB_FIFO_NUM_FILES_EVICTED, "rocksdb.blobdb.fifo.num.files.evicted"}, {BLOB_DB_FIFO_NUM_KEYS_EVICTED, "rocksdb.blobdb.fifo.num.keys.evicted"}, {BLOB_DB_FIFO_BYTES_EVICTED, "rocksdb.blobdb.fifo.bytes.evicted"}, {TXN_PREPARE_MUTEX_OVERHEAD, "rocksdb.txn.overhead.mutex.prepare"}, {TXN_OLD_COMMIT_MAP_MUTEX_OVERHEAD, "rocksdb.txn.overhead.mutex.old.commit.map"}, {TXN_DUPLICATE_KEY_OVERHEAD, "rocksdb.txn.overhead.duplicate.key"}, {TXN_SNAPSHOT_MUTEX_OVERHEAD, "rocksdb.txn.overhead.mutex.snapshot"}, {TXN_GET_TRY_AGAIN, "rocksdb.txn.get.tryagain"}, {NUMBER_MULTIGET_KEYS_FOUND, "rocksdb.number.multiget.keys.found"}, {NO_ITERATOR_CREATED, "rocksdb.num.iterator.created"}, {NO_ITERATOR_DELETED, "rocksdb.num.iterator.deleted"}, {BLOCK_CACHE_COMPRESSION_DICT_MISS, "rocksdb.block.cache.compression.dict.miss"}, {BLOCK_CACHE_COMPRESSION_DICT_HIT, "rocksdb.block.cache.compression.dict.hit"}, {BLOCK_CACHE_COMPRESSION_DICT_ADD, "rocksdb.block.cache.compression.dict.add"}, {BLOCK_CACHE_COMPRESSION_DICT_BYTES_INSERT, "rocksdb.block.cache.compression.dict.bytes.insert"}, {BLOCK_CACHE_COMPRESSION_DICT_BYTES_EVICT, "rocksdb.block.cache.compression.dict.bytes.evict"}, {BLOCK_CACHE_ADD_REDUNDANT, "rocksdb.block.cache.add.redundant"}, {BLOCK_CACHE_INDEX_ADD_REDUNDANT, "rocksdb.block.cache.index.add.redundant"}, {BLOCK_CACHE_FILTER_ADD_REDUNDANT, "rocksdb.block.cache.filter.add.redundant"}, {BLOCK_CACHE_DATA_ADD_REDUNDANT, "rocksdb.block.cache.data.add.redundant"}, {BLOCK_CACHE_COMPRESSION_DICT_ADD_REDUNDANT, "rocksdb.block.cache.compression.dict.add.redundant"}, {FILES_MARKED_TRASH, "rocksdb.files.marked.trash"}, {FILES_DELETED_IMMEDIATELY, "rocksdb.files.deleted.immediately"}, {ERROR_HANDLER_BG_ERROR_COUNT, "rocksdb.error.handler.bg.errro.count"}, {ERROR_HANDLER_BG_IO_ERROR_COUNT, "rocksdb.error.handler.bg.io.errro.count"}, {ERROR_HANDLER_BG_RETRYABLE_IO_ERROR_COUNT, "rocksdb.error.handler.bg.retryable.io.errro.count"}, {ERROR_HANDLER_AUTORESUME_COUNT, "rocksdb.error.handler.autoresume.count"}, {ERROR_HANDLER_AUTORESUME_RETRY_TOTAL_COUNT, "rocksdb.error.handler.autoresume.retry.total.count"}, {ERROR_HANDLER_AUTORESUME_SUCCESS_COUNT, "rocksdb.error.handler.autoresume.success.count"}, {MEMTABLE_PAYLOAD_BYTES_AT_FLUSH, "rocksdb.memtable.payload.bytes.at.flush"}, {MEMTABLE_GARBAGE_BYTES_AT_FLUSH, "rocksdb.memtable.garbage.bytes.at.flush"}, }; const std::vector> HistogramsNameMap = { {DB_GET, "rocksdb.db.get.micros"}, {DB_WRITE, "rocksdb.db.write.micros"}, {COMPACTION_TIME, "rocksdb.compaction.times.micros"}, {COMPACTION_CPU_TIME, "rocksdb.compaction.times.cpu_micros"}, {SUBCOMPACTION_SETUP_TIME, "rocksdb.subcompaction.setup.times.micros"}, {TABLE_SYNC_MICROS, "rocksdb.table.sync.micros"}, {COMPACTION_OUTFILE_SYNC_MICROS, "rocksdb.compaction.outfile.sync.micros"}, {WAL_FILE_SYNC_MICROS, "rocksdb.wal.file.sync.micros"}, {MANIFEST_FILE_SYNC_MICROS, "rocksdb.manifest.file.sync.micros"}, {TABLE_OPEN_IO_MICROS, "rocksdb.table.open.io.micros"}, {DB_MULTIGET, "rocksdb.db.multiget.micros"}, {READ_BLOCK_COMPACTION_MICROS, "rocksdb.read.block.compaction.micros"}, {READ_BLOCK_GET_MICROS, "rocksdb.read.block.get.micros"}, {WRITE_RAW_BLOCK_MICROS, "rocksdb.write.raw.block.micros"}, {STALL_L0_SLOWDOWN_COUNT, "rocksdb.l0.slowdown.count"}, {STALL_MEMTABLE_COMPACTION_COUNT, "rocksdb.memtable.compaction.count"}, {STALL_L0_NUM_FILES_COUNT, "rocksdb.num.files.stall.count"}, {HARD_RATE_LIMIT_DELAY_COUNT, "rocksdb.hard.rate.limit.delay.count"}, {SOFT_RATE_LIMIT_DELAY_COUNT, "rocksdb.soft.rate.limit.delay.count"}, {NUM_FILES_IN_SINGLE_COMPACTION, "rocksdb.numfiles.in.singlecompaction"}, {DB_SEEK, "rocksdb.db.seek.micros"}, {WRITE_STALL, "rocksdb.db.write.stall"}, {SST_READ_MICROS, "rocksdb.sst.read.micros"}, {NUM_SUBCOMPACTIONS_SCHEDULED, "rocksdb.num.subcompactions.scheduled"}, {BYTES_PER_READ, "rocksdb.bytes.per.read"}, {BYTES_PER_WRITE, "rocksdb.bytes.per.write"}, {BYTES_PER_MULTIGET, "rocksdb.bytes.per.multiget"}, {BYTES_COMPRESSED, "rocksdb.bytes.compressed"}, {BYTES_DECOMPRESSED, "rocksdb.bytes.decompressed"}, {COMPRESSION_TIMES_NANOS, "rocksdb.compression.times.nanos"}, {DECOMPRESSION_TIMES_NANOS, "rocksdb.decompression.times.nanos"}, {READ_NUM_MERGE_OPERANDS, "rocksdb.read.num.merge_operands"}, {BLOB_DB_KEY_SIZE, "rocksdb.blobdb.key.size"}, {BLOB_DB_VALUE_SIZE, "rocksdb.blobdb.value.size"}, {BLOB_DB_WRITE_MICROS, "rocksdb.blobdb.write.micros"}, {BLOB_DB_GET_MICROS, "rocksdb.blobdb.get.micros"}, {BLOB_DB_MULTIGET_MICROS, "rocksdb.blobdb.multiget.micros"}, {BLOB_DB_SEEK_MICROS, "rocksdb.blobdb.seek.micros"}, {BLOB_DB_NEXT_MICROS, "rocksdb.blobdb.next.micros"}, {BLOB_DB_PREV_MICROS, "rocksdb.blobdb.prev.micros"}, {BLOB_DB_BLOB_FILE_WRITE_MICROS, "rocksdb.blobdb.blob.file.write.micros"}, {BLOB_DB_BLOB_FILE_READ_MICROS, "rocksdb.blobdb.blob.file.read.micros"}, {BLOB_DB_BLOB_FILE_SYNC_MICROS, "rocksdb.blobdb.blob.file.sync.micros"}, {BLOB_DB_GC_MICROS, "rocksdb.blobdb.gc.micros"}, {BLOB_DB_COMPRESSION_MICROS, "rocksdb.blobdb.compression.micros"}, {BLOB_DB_DECOMPRESSION_MICROS, "rocksdb.blobdb.decompression.micros"}, {FLUSH_TIME, "rocksdb.db.flush.micros"}, {SST_BATCH_SIZE, "rocksdb.sst.batch.size"}, {NUM_INDEX_AND_FILTER_BLOCKS_READ_PER_LEVEL, "rocksdb.num.index.and.filter.blocks.read.per.level"}, {NUM_DATA_BLOCKS_READ_PER_LEVEL, "rocksdb.num.data.blocks.read.per.level"}, {NUM_SST_READ_PER_LEVEL, "rocksdb.num.sst.read.per.level"}, {ERROR_HANDLER_AUTORESUME_RETRY_COUNT, "rocksdb.error.handler.autoresume.retry.count"}, }; std::shared_ptr CreateDBStatistics() { return std::make_shared(nullptr); } StatisticsImpl::StatisticsImpl(std::shared_ptr stats) : stats_(std::move(stats)) {} StatisticsImpl::~StatisticsImpl() {} uint64_t StatisticsImpl::getTickerCount(uint32_t tickerType) const { MutexLock lock(&aggregate_lock_); return getTickerCountLocked(tickerType); } uint64_t StatisticsImpl::getTickerCountLocked(uint32_t tickerType) const { assert(tickerType < TICKER_ENUM_MAX); uint64_t res = 0; for (size_t core_idx = 0; core_idx < per_core_stats_.Size(); ++core_idx) { res += per_core_stats_.AccessAtCore(core_idx)->tickers_[tickerType]; } return res; } void StatisticsImpl::histogramData(uint32_t histogramType, HistogramData* const data) const { MutexLock lock(&aggregate_lock_); getHistogramImplLocked(histogramType)->Data(data); } std::unique_ptr StatisticsImpl::getHistogramImplLocked( uint32_t histogramType) const { assert(histogramType < HISTOGRAM_ENUM_MAX); std::unique_ptr res_hist(new HistogramImpl()); for (size_t core_idx = 0; core_idx < per_core_stats_.Size(); ++core_idx) { res_hist->Merge( per_core_stats_.AccessAtCore(core_idx)->histograms_[histogramType]); } return res_hist; } std::string StatisticsImpl::getHistogramString(uint32_t histogramType) const { MutexLock lock(&aggregate_lock_); return getHistogramImplLocked(histogramType)->ToString(); } void StatisticsImpl::setTickerCount(uint32_t tickerType, uint64_t count) { { MutexLock lock(&aggregate_lock_); setTickerCountLocked(tickerType, count); } if (stats_ && tickerType < TICKER_ENUM_MAX) { stats_->setTickerCount(tickerType, count); } } void StatisticsImpl::setTickerCountLocked(uint32_t tickerType, uint64_t count) { assert(tickerType < TICKER_ENUM_MAX); for (size_t core_idx = 0; core_idx < per_core_stats_.Size(); ++core_idx) { if (core_idx == 0) { per_core_stats_.AccessAtCore(core_idx)->tickers_[tickerType] = count; } else { per_core_stats_.AccessAtCore(core_idx)->tickers_[tickerType] = 0; } } } uint64_t StatisticsImpl::getAndResetTickerCount(uint32_t tickerType) { uint64_t sum = 0; { MutexLock lock(&aggregate_lock_); assert(tickerType < TICKER_ENUM_MAX); for (size_t core_idx = 0; core_idx < per_core_stats_.Size(); ++core_idx) { sum += per_core_stats_.AccessAtCore(core_idx)->tickers_[tickerType].exchange( 0, std::memory_order_relaxed); } } if (stats_ && tickerType < TICKER_ENUM_MAX) { stats_->setTickerCount(tickerType, 0); } return sum; } void StatisticsImpl::recordTick(uint32_t tickerType, uint64_t count) { if (get_stats_level() <= StatsLevel::kExceptTickers) { return; } if (tickerType < TICKER_ENUM_MAX) { per_core_stats_.Access()->tickers_[tickerType].fetch_add( count, std::memory_order_relaxed); if (stats_) { stats_->recordTick(tickerType, count); } } else { assert(false); } } void StatisticsImpl::recordInHistogram(uint32_t histogramType, uint64_t value) { assert(histogramType < HISTOGRAM_ENUM_MAX); if (get_stats_level() <= StatsLevel::kExceptHistogramOrTimers) { return; } per_core_stats_.Access()->histograms_[histogramType].Add(value); if (stats_ && histogramType < HISTOGRAM_ENUM_MAX) { stats_->recordInHistogram(histogramType, value); } } Status StatisticsImpl::Reset() { MutexLock lock(&aggregate_lock_); for (uint32_t i = 0; i < TICKER_ENUM_MAX; ++i) { setTickerCountLocked(i, 0); } for (uint32_t i = 0; i < HISTOGRAM_ENUM_MAX; ++i) { for (size_t core_idx = 0; core_idx < per_core_stats_.Size(); ++core_idx) { per_core_stats_.AccessAtCore(core_idx)->histograms_[i].Clear(); } } return Status::OK(); } namespace { // a buffer size used for temp string buffers const int kTmpStrBufferSize = 200; } // namespace std::string StatisticsImpl::ToString() const { MutexLock lock(&aggregate_lock_); std::string res; res.reserve(20000); for (const auto& t : TickersNameMap) { assert(t.first < TICKER_ENUM_MAX); char buffer[kTmpStrBufferSize]; snprintf(buffer, kTmpStrBufferSize, "%s COUNT : %" PRIu64 "\n", t.second.c_str(), getTickerCountLocked(t.first)); res.append(buffer); } for (const auto& h : HistogramsNameMap) { assert(h.first < HISTOGRAM_ENUM_MAX); char buffer[kTmpStrBufferSize]; HistogramData hData; getHistogramImplLocked(h.first)->Data(&hData); // don't handle failures - buffer should always be big enough and arguments // should be provided correctly int ret = snprintf(buffer, kTmpStrBufferSize, "%s P50 : %f P95 : %f P99 : %f P100 : %f COUNT : %" PRIu64 " SUM : %" PRIu64 "\n", h.second.c_str(), hData.median, hData.percentile95, hData.percentile99, hData.max, hData.count, hData.sum); if (ret < 0 || ret >= kTmpStrBufferSize) { assert(false); continue; } res.append(buffer); } res.shrink_to_fit(); return res; } bool StatisticsImpl::getTickerMap( std::map* stats_map) const { assert(stats_map); if (!stats_map) return false; stats_map->clear(); MutexLock lock(&aggregate_lock_); for (const auto& t : TickersNameMap) { assert(t.first < TICKER_ENUM_MAX); (*stats_map)[t.second.c_str()] = getTickerCountLocked(t.first); } return true; } bool StatisticsImpl::HistEnabledForType(uint32_t type) const { return type < HISTOGRAM_ENUM_MAX; } } // namespace ROCKSDB_NAMESPACE