363 lines
11 KiB
C++
363 lines
11 KiB
C++
/*
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* Knobs.h
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*
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* This source file is part of the FoundationDB open source project
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*
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* Copyright 2013-2018 Apple Inc. and the FoundationDB project authors
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef FDBSERVER_KNOBS_H
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#define FDBSERVER_KNOBS_H
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#pragma once
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#include "flow/Knobs.h"
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#include "fdbrpc/fdbrpc.h"
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#include "fdbclient/Knobs.h"
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// Disk queue
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static const int _PAGE_SIZE = 4096;
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class ServerKnobs : public Knobs {
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public:
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// Versions
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int64_t VERSIONS_PER_SECOND;
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int64_t MAX_VERSIONS_IN_FLIGHT;
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int64_t MAX_VERSIONS_IN_FLIGHT_FORCED;
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int64_t MAX_READ_TRANSACTION_LIFE_VERSIONS;
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int64_t MAX_WRITE_TRANSACTION_LIFE_VERSIONS;
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double MAX_COMMIT_BATCH_INTERVAL; // Each master proxy generates a CommitTransactionBatchRequest at least this often, so that versions always advance smoothly
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// TLogs
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double TLOG_TIMEOUT; // tlog OR master proxy failure - master's reaction time
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double RECOVERY_TLOG_SMART_QUORUM_DELAY; // smaller might be better for bug amplification
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double TLOG_STORAGE_MIN_UPDATE_INTERVAL;
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double BUGGIFY_TLOG_STORAGE_MIN_UPDATE_INTERVAL;
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double UNFLUSHED_DATA_RATIO;
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int DESIRED_TOTAL_BYTES;
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int DESIRED_UPDATE_BYTES;
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double UPDATE_DELAY;
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int MAXIMUM_PEEK_BYTES;
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int APPLY_MUTATION_BYTES;
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int RECOVERY_DATA_BYTE_LIMIT;
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int BUGGIFY_RECOVERY_DATA_LIMIT;
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double LONG_TLOG_COMMIT_TIME;
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int64_t LARGE_TLOG_COMMIT_BYTES;
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double BUGGIFY_RECOVER_MEMORY_LIMIT;
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double BUGGIFY_WORKER_REMOVED_MAX_LAG;
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int64_t UPDATE_STORAGE_BYTE_LIMIT;
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double TLOG_PEEK_DELAY;
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int LEGACY_TLOG_UPGRADE_ENTRIES_PER_VERSION;
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int VERSION_MESSAGES_OVERHEAD_FACTOR_1024THS; // Multiplicative factor to bound total space used to store a version message (measured in 1/1024ths, e.g. a value of 2048 yields a factor of 2).
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int64_t VERSION_MESSAGES_ENTRY_BYTES_WITH_OVERHEAD;
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double TLOG_MESSAGE_BLOCK_OVERHEAD_FACTOR;
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int64_t TLOG_MESSAGE_BLOCK_BYTES;
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int64_t MAX_MESSAGE_SIZE;
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int LOG_SYSTEM_PUSHED_DATA_BLOCK_SIZE;
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double PEEK_TRACKER_EXPIRATION_TIME;
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int PARALLEL_GET_MORE_REQUESTS;
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int MULTI_CURSOR_PRE_FETCH_LIMIT;
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int64_t MAX_QUEUE_COMMIT_BYTES;
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int64_t VERSIONS_PER_BATCH;
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int CONCURRENT_LOG_ROUTER_READS;
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double DISK_QUEUE_ADAPTER_MIN_SWITCH_TIME;
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double DISK_QUEUE_ADAPTER_MAX_SWITCH_TIME;
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// Data distribution queue
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double HEALTH_POLL_TIME;
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double BEST_TEAM_STUCK_DELAY;
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double BG_DD_POLLING_INTERVAL;
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double DD_QUEUE_LOGGING_INTERVAL;
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double RELOCATION_PARALLELISM_PER_SOURCE_SERVER;
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int DD_QUEUE_MAX_KEY_SERVERS;
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int DD_REBALANCE_PARALLELISM;
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int DD_REBALANCE_RESET_AMOUNT;
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double BG_DD_MAX_WAIT;
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double BG_DD_MIN_WAIT;
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double BG_DD_INCREASE_RATE;
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double BG_DD_DECREASE_RATE;
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double BG_DD_SATURATION_DELAY;
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double INFLIGHT_PENALTY_HEALTHY;
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double INFLIGHT_PENALTY_UNHEALTHY;
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double INFLIGHT_PENALTY_ONE_LEFT;
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// Data distribution
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double RETRY_RELOCATESHARD_DELAY;
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double DATA_DISTRIBUTION_FAILURE_REACTION_TIME;
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int MIN_SHARD_BYTES, SHARD_BYTES_RATIO, SHARD_BYTES_PER_SQRT_BYTES, MAX_SHARD_BYTES, KEY_SERVER_SHARD_BYTES;
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int64_t SHARD_MAX_BYTES_PER_KSEC, // Shards with more than this bandwidth will be split immediately
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SHARD_MIN_BYTES_PER_KSEC, // Shards with more than this bandwidth will not be merged
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SHARD_SPLIT_BYTES_PER_KSEC; // When splitting a shard, it is split into pieces with less than this bandwidth
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double STORAGE_METRIC_TIMEOUT;
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double METRIC_DELAY;
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double ALL_DATA_REMOVED_DELAY;
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double INITIAL_FAILURE_REACTION_DELAY;
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double CHECK_TEAM_DELAY;
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double LOG_ON_COMPLETION_DELAY;
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int BEST_TEAM_MAX_TEAM_TRIES;
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int BEST_TEAM_OPTION_COUNT;
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int BEST_OF_AMT;
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double SERVER_LIST_DELAY;
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double RECRUITMENT_IDLE_DELAY;
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double STORAGE_RECRUITMENT_DELAY;
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double DATA_DISTRIBUTION_LOGGING_INTERVAL;
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double DD_ENABLED_CHECK_DELAY;
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double DD_MERGE_COALESCE_DELAY;
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double STORAGE_METRICS_POLLING_DELAY;
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double STORAGE_METRICS_RANDOM_DELAY;
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double FREE_SPACE_RATIO_CUTOFF;
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double FREE_SPACE_RATIO_DD_CUTOFF;
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int DESIRED_TEAMS_PER_SERVER;
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int MAX_TEAMS_PER_SERVER;
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int64_t DD_SHARD_SIZE_GRANULARITY;
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int64_t DD_SHARD_SIZE_GRANULARITY_SIM;
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int DD_MOVE_KEYS_PARALLELISM;
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int DD_MERGE_LIMIT;
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double DD_SHARD_METRICS_TIMEOUT;
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int64_t DD_LOCATION_CACHE_SIZE;
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double MOVEKEYS_LOCK_POLLING_DELAY;
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double DEBOUNCE_RECRUITING_DELAY;
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// Redwood Storage Engine
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int PREFIX_TREE_IMMEDIATE_KEY_SIZE_LIMIT;
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int PREFIX_TREE_IMMEDIATE_KEY_SIZE_MIN;
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// KeyValueStore SQLITE
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int CLEAR_BUFFER_SIZE;
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double READ_VALUE_TIME_ESTIMATE;
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double READ_RANGE_TIME_ESTIMATE;
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double SET_TIME_ESTIMATE;
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double CLEAR_TIME_ESTIMATE;
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double COMMIT_TIME_ESTIMATE;
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int CHECK_FREE_PAGE_AMOUNT;
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double DISK_METRIC_LOGGING_INTERVAL;
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int64_t SOFT_HEAP_LIMIT;
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int SQLITE_PAGE_SCAN_ERROR_LIMIT;
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int SQLITE_BTREE_PAGE_USABLE;
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int SQLITE_BTREE_CELL_MAX_LOCAL;
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int SQLITE_BTREE_CELL_MIN_LOCAL;
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int SQLITE_FRAGMENT_PRIMARY_PAGE_USABLE;
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int SQLITE_FRAGMENT_OVERFLOW_PAGE_USABLE;
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double SQLITE_FRAGMENT_MIN_SAVINGS;
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// KeyValueStoreSqlite spring cleaning
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double CLEANING_INTERVAL;
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double SPRING_CLEANING_TIME_ESTIMATE;
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double SPRING_CLEANING_VACUUMS_PER_LAZY_DELETE_PAGE;
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int SPRING_CLEANING_MIN_LAZY_DELETE_PAGES;
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int SPRING_CLEANING_MAX_LAZY_DELETE_PAGES;
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int SPRING_CLEANING_LAZY_DELETE_BATCH_SIZE;
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int SPRING_CLEANING_MIN_VACUUM_PAGES;
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int SPRING_CLEANING_MAX_VACUUM_PAGES;
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// KeyValueStoreMemory
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int64_t REPLACE_CONTENTS_BYTES;
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// Leader election
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int MAX_NOTIFICATIONS;
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int MIN_NOTIFICATIONS;
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double NOTIFICATION_FULL_CLEAR_TIME;
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double CANDIDATE_MIN_DELAY;
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double CANDIDATE_MAX_DELAY;
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double CANDIDATE_GROWTH_RATE;
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double POLLING_FREQUENCY;
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double HEARTBEAT_FREQUENCY;
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// Master Proxy
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double START_TRANSACTION_BATCH_INTERVAL_MIN;
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double START_TRANSACTION_BATCH_INTERVAL_MAX;
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double START_TRANSACTION_BATCH_INTERVAL_LATENCY_FRACTION;
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double START_TRANSACTION_BATCH_INTERVAL_SMOOTHER_ALPHA;
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double START_TRANSACTION_BATCH_QUEUE_CHECK_INTERVAL;
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double START_TRANSACTION_MAX_TRANSACTIONS_TO_START;
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double START_TRANSACTION_MAX_BUDGET_SIZE;
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double COMMIT_TRANSACTION_BATCH_INTERVAL_FROM_IDLE;
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double COMMIT_TRANSACTION_BATCH_INTERVAL_MIN;
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double COMMIT_TRANSACTION_BATCH_INTERVAL_MAX;
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double COMMIT_TRANSACTION_BATCH_INTERVAL_LATENCY_FRACTION;
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double COMMIT_TRANSACTION_BATCH_INTERVAL_SMOOTHER_ALPHA;
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int COMMIT_TRANSACTION_BATCH_COUNT_MAX;
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int COMMIT_TRANSACTION_BATCH_BYTES_MIN;
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int COMMIT_TRANSACTION_BATCH_BYTES_MAX;
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double COMMIT_TRANSACTION_BATCH_BYTES_SCALE_BASE;
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double COMMIT_TRANSACTION_BATCH_BYTES_SCALE_POWER;
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int64_t COMMIT_BATCHES_MEM_BYTES_HARD_LIMIT;
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double COMMIT_BATCHES_MEM_FRACTION_OF_TOTAL;
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double COMMIT_BATCHES_MEM_TO_TOTAL_MEM_SCALE_FACTOR;
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double TRANSACTION_BUDGET_TIME;
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double RESOLVER_COALESCE_TIME;
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int BUGGIFIED_ROW_LIMIT;
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double PROXY_SPIN_DELAY;
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double UPDATE_REMOTE_LOG_VERSION_INTERVAL;
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int MAX_TXS_POP_VERSION_HISTORY;
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// Master Server
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double COMMIT_SLEEP_TIME;
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double MIN_BALANCE_TIME;
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int64_t MIN_BALANCE_DIFFERENCE;
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double SECONDS_BEFORE_NO_FAILURE_DELAY;
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int64_t MAX_TXS_SEND_MEMORY;
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int64_t MAX_RECOVERY_VERSIONS;
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double MAX_RECOVERY_TIME;
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// Resolver
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int64_t KEY_BYTES_PER_SAMPLE;
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int64_t SAMPLE_OFFSET_PER_KEY;
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double SAMPLE_EXPIRATION_TIME;
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double SAMPLE_POLL_TIME;
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int64_t RESOLVER_STATE_MEMORY_LIMIT;
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//Cluster Controller
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double CLUSTER_CONTROLLER_LOGGING_DELAY;
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double MASTER_FAILURE_REACTION_TIME;
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double MASTER_FAILURE_SLOPE_DURING_RECOVERY;
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int WORKER_COORDINATION_PING_DELAY;
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double SIM_SHUTDOWN_TIMEOUT;
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double SHUTDOWN_TIMEOUT;
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double MASTER_SPIN_DELAY;
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double CC_CHANGE_DELAY;
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double CC_CLASS_DELAY;
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double WAIT_FOR_GOOD_RECRUITMENT_DELAY;
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double WAIT_FOR_GOOD_REMOTE_RECRUITMENT_DELAY;
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double ATTEMPT_RECRUITMENT_DELAY;
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double WORKER_FAILURE_TIME;
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double CHECK_OUTSTANDING_INTERVAL;
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double INCOMPATIBLE_PEERS_LOGGING_INTERVAL;
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double VERSION_LAG_METRIC_INTERVAL;
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int64_t MAX_VERSION_DIFFERENCE;
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// Knobs used to select the best policy (via monte carlo)
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int POLICY_RATING_TESTS; // number of tests per policy (in order to compare)
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int POLICY_GENERATIONS; // number of policies to generate
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int EXPECTED_MASTER_FITNESS;
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int EXPECTED_TLOG_FITNESS;
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int EXPECTED_LOG_ROUTER_FITNESS;
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int EXPECTED_PROXY_FITNESS;
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int EXPECTED_RESOLVER_FITNESS;
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double RECRUITMENT_TIMEOUT;
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//Move Keys
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double SHARD_READY_DELAY;
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double SERVER_READY_QUORUM_INTERVAL;
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double SERVER_READY_QUORUM_TIMEOUT;
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double REMOVE_RETRY_DELAY;
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int MOVE_KEYS_KRM_LIMIT;
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int MOVE_KEYS_KRM_LIMIT_BYTES; //This must be sufficiently larger than CLIENT_KNOBS->KEY_SIZE_LIMIT (fdbclient/Knobs.h) to ensure that at least two entries will be returned from an attempt to read a key range map
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int MAX_SKIP_TAGS;
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double MAX_ADDED_SOURCES_MULTIPLIER;
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//FdbServer
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double MIN_REBOOT_TIME;
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double MAX_REBOOT_TIME;
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std::string LOG_DIRECTORY;
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int64_t SERVER_MEM_LIMIT;
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//Ratekeeper
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double SMOOTHING_AMOUNT;
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double SLOW_SMOOTHING_AMOUNT;
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double METRIC_UPDATE_RATE;
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double LAST_LIMITED_RATIO;
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int64_t TARGET_BYTES_PER_STORAGE_SERVER;
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double SPRING_BYTES_STORAGE_SERVER;
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int64_t TARGET_BYTES_PER_TLOG;
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double SPRING_BYTES_TLOG;
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int64_t TLOG_SPILL_THRESHOLD;
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int64_t TLOG_HARD_LIMIT_BYTES;
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int64_t TLOG_RECOVER_MEMORY_LIMIT;
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double MAX_TRANSACTIONS_PER_BYTE;
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int64_t MIN_FREE_SPACE;
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double MIN_FREE_SPACE_RATIO;
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double MAX_TL_SS_VERSION_DIFFERENCE; // spring starts at half this value
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int MAX_MACHINES_FALLING_BEHIND;
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//Storage Metrics
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double STORAGE_METRICS_AVERAGE_INTERVAL;
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double STORAGE_METRICS_AVERAGE_INTERVAL_PER_KSECONDS;
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double SPLIT_JITTER_AMOUNT;
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int64_t IOPS_UNITS_PER_SAMPLE;
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int64_t BANDWIDTH_UNITS_PER_SAMPLE;
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//Storage Server
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double STORAGE_LOGGING_DELAY;
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double STORAGE_SERVER_POLL_METRICS_DELAY;
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double FUTURE_VERSION_DELAY;
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int STORAGE_LIMIT_BYTES;
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int BUGGIFY_LIMIT_BYTES;
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int FETCH_BLOCK_BYTES;
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int FETCH_KEYS_PARALLELISM_BYTES;
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int BUGGIFY_BLOCK_BYTES;
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int64_t STORAGE_HARD_LIMIT_BYTES;
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int STORAGE_COMMIT_BYTES;
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double STORAGE_COMMIT_INTERVAL;
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double UPDATE_SHARD_VERSION_INTERVAL;
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int BYTE_SAMPLING_FACTOR;
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int BYTE_SAMPLING_OVERHEAD;
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int MAX_STORAGE_SERVER_WATCH_BYTES;
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int MAX_BYTE_SAMPLE_CLEAR_MAP_SIZE;
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double LONG_BYTE_SAMPLE_RECOVERY_DELAY;
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int BYTE_SAMPLE_LOAD_PARALLELISM;
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double BYTE_SAMPLE_LOAD_DELAY;
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//Wait Failure
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int BUGGIFY_OUTSTANDING_WAIT_FAILURE_REQUESTS;
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int MAX_OUTSTANDING_WAIT_FAILURE_REQUESTS;
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double WAIT_FAILURE_DELAY_LIMIT;
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//Worker
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double WORKER_LOGGING_INTERVAL;
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double INCOMPATIBLE_PEER_DELAY_BEFORE_LOGGING;
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// Test harness
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double WORKER_POLL_DELAY;
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// Coordination
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double COORDINATED_STATE_ONCONFLICT_POLL_INTERVAL;
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// Buggification
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double BUGGIFIED_EVENTUAL_CONSISTENCY;
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bool BUGGIFY_ALL_COORDINATION;
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// Status
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double STATUS_MIN_TIME_BETWEEN_REQUESTS;
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double MAX_STATUS_REQUESTS_PER_SECOND;
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int CONFIGURATION_ROWS_TO_FETCH;
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// IPager
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int PAGER_RESERVED_PAGES;
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// IndirectShadowPager
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int FREE_PAGE_VACUUM_THRESHOLD;
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int VACUUM_QUEUE_SIZE;
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int VACUUM_BYTES_PER_SECOND;
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// Timekeeper
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int64_t TIME_KEEPER_DELAY;
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int64_t TIME_KEEPER_MAX_ENTRIES;
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ServerKnobs(bool randomize = false, ClientKnobs* clientKnobs = NULL);
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};
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extern ServerKnobs const* SERVER_KNOBS;
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#endif
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