222 lines
6.4 KiB
C++
222 lines
6.4 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 FLOW_KNOBS_H
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#define FLOW_KNOBS_H
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#pragma once
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#include "flow/Platform.h"
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#include <map>
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#include <string>
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#include <stdint.h>
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class Knobs {
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public:
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bool setKnob( std::string const& name, std::string const& value ); // Returns true if the knob name is known, false if it is unknown
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void trace();
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protected:
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void initKnob( double& knob, double value, std::string const& name );
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void initKnob( int64_t& knob, int64_t value, std::string const& name );
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void initKnob( int& knob, int value, std::string const& name );
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void initKnob( std::string& knob, const std::string& value, const std::string& name );
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void initKnob( bool& knob, bool value, std::string const& name );
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std::map<std::string, double*> double_knobs;
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std::map<std::string, int64_t*> int64_knobs;
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std::map<std::string, int*> int_knobs;
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std::map<std::string, std::string*> string_knobs;
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std::map<std::string, bool*> bool_knobs;
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};
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class FlowKnobs : public Knobs {
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public:
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int AUTOMATIC_TRACE_DUMP;
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double PREVENT_FAST_SPIN_DELAY;
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double CACHE_REFRESH_INTERVAL_WHEN_ALL_ALTERNATIVES_FAILED;
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double DELAY_JITTER_OFFSET;
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double DELAY_JITTER_RANGE;
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double BUSY_WAIT_THRESHOLD;
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double CLIENT_REQUEST_INTERVAL;
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double SERVER_REQUEST_INTERVAL;
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int DISABLE_ASSERTS;
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double QUEUE_MODEL_SMOOTHING_AMOUNT;
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int RANDOMSEED_RETRY_LIMIT;
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double FAST_ALLOC_LOGGING_BYTES;
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double HUGE_ARENA_LOGGING_BYTES;
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double HUGE_ARENA_LOGGING_INTERVAL;
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//slow task profiling
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double SLOWTASK_PROFILING_INTERVAL;
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double SLOWTASK_PROFILING_MAX_LOG_INTERVAL;
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double SLOWTASK_PROFILING_LOG_BACKOFF;
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//connectionMonitor
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double CONNECTION_MONITOR_LOOP_TIME;
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double CONNECTION_MONITOR_TIMEOUT;
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double CONNECTION_MONITOR_IDLE_TIMEOUT;
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double CONNECTION_MONITOR_INCOMING_IDLE_MULTIPLIER;
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double CONNECTION_MONITOR_UNREFERENCED_CLOSE_DELAY;
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//FlowTransport
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double CONNECTION_REJECTED_MESSAGE_DELAY;
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double CONNECTION_ID_TIMEOUT;
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double CONNECTION_CLEANUP_DELAY;
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double INITIAL_RECONNECTION_TIME;
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double MAX_RECONNECTION_TIME;
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double RECONNECTION_TIME_GROWTH_RATE;
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double RECONNECTION_RESET_TIME;
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double ALWAYS_ACCEPT_DELAY;
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int ACCEPT_BATCH_SIZE;
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int USE_OBJECT_SERIALIZER;
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double PING_LOGGING_INTERVAL;
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int TLS_CERT_REFRESH_DELAY_SECONDS;
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double TLS_SERVER_CONNECTION_THROTTLE_TIMEOUT;
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double TLS_CLIENT_CONNECTION_THROTTLE_TIMEOUT;
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int TLS_SERVER_CONNECTION_THROTTLE_ATTEMPTS;
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int TLS_CLIENT_CONNECTION_THROTTLE_ATTEMPTS;
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//AsyncFileCached
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int64_t PAGE_CACHE_4K;
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int64_t PAGE_CACHE_64K;
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int64_t SIM_PAGE_CACHE_4K;
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int64_t SIM_PAGE_CACHE_64K;
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int64_t BUGGIFY_SIM_PAGE_CACHE_4K;
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int64_t BUGGIFY_SIM_PAGE_CACHE_64K;
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std::string CACHE_EVICTION_POLICY; // for now, "random", "lru", are supported
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int MAX_EVICT_ATTEMPTS;
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double PAGE_CACHE_TRUNCATE_LOOKUP_FRACTION;
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double TOO_MANY_CONNECTIONS_CLOSED_RESET_DELAY;
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int TOO_MANY_CONNECTIONS_CLOSED_TIMEOUT;
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//AsyncFileEIO
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int EIO_MAX_PARALLELISM;
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int EIO_USE_ODIRECT;
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//AsyncFileKAIO
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int MAX_OUTSTANDING;
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int MIN_SUBMIT;
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int PAGE_WRITE_CHECKSUM_HISTORY;
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int DISABLE_POSIX_KERNEL_AIO;
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//AsyncFileNonDurable
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double MAX_PRIOR_MODIFICATION_DELAY;
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//GenericActors
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double BUGGIFY_FLOW_LOCK_RELEASE_DELAY;
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int LOW_PRIORITY_DELAY_COUNT;
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//IAsyncFile
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int64_t INCREMENTAL_DELETE_TRUNCATE_AMOUNT;
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double INCREMENTAL_DELETE_INTERVAL;
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//Net2
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double MIN_COALESCE_DELAY;
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double MAX_COALESCE_DELAY;
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double SLOW_LOOP_CUTOFF;
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double SLOW_LOOP_SAMPLING_RATE;
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int64_t TSC_YIELD_TIME;
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int64_t REACTOR_FLAGS;
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int CERT_FILE_MAX_SIZE;
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//Network
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int64_t PACKET_LIMIT;
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int64_t PACKET_WARNING; // 2MB packet warning quietly allows for 1MB system messages
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double TIME_OFFSET_LOGGING_INTERVAL;
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int MAX_PACKET_SEND_BYTES;
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int MIN_PACKET_BUFFER_BYTES;
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int MIN_PACKET_BUFFER_FREE_BYTES;
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int UNRESTRICTED_HANDSHAKE_LIMIT;
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int BOUNDED_HANDSHAKE_LIMIT;
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//Sim2
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//FIMXE: more parameters could be factored out
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double MIN_OPEN_TIME;
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double MAX_OPEN_TIME;
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int64_t SIM_DISK_IOPS;
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int64_t SIM_DISK_BANDWIDTH;
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double MIN_NETWORK_LATENCY;
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double FAST_NETWORK_LATENCY;
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double SLOW_NETWORK_LATENCY;
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double MAX_CLOGGING_LATENCY;
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double MAX_BUGGIFIED_DELAY;
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int SIM_CONNECT_ERROR_MODE;
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//Tracefiles
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int ZERO_LENGTH_FILE_PAD;
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double TRACE_FLUSH_INTERVAL;
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double TRACE_RETRY_OPEN_INTERVAL;
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int MIN_TRACE_SEVERITY;
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int MAX_TRACE_SUPPRESSIONS;
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int TRACE_SYNC_ENABLED;
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int TRACE_EVENT_METRIC_UNITS_PER_SAMPLE;
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int TRACE_EVENT_THROTTLER_SAMPLE_EXPIRY;
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int TRACE_EVENT_THROTTLER_MSG_LIMIT;
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int MAX_TRACE_FIELD_LENGTH;
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int MAX_TRACE_EVENT_LENGTH;
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bool ALLOCATION_TRACING_ENABLED;
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//TDMetrics
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int64_t MAX_METRIC_SIZE;
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int64_t MAX_METRIC_LEVEL;
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double METRIC_LEVEL_DIVISOR;
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int METRIC_LIMIT_START_QUEUE_SIZE;
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int METRIC_LIMIT_RESPONSE_FACTOR;
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int MAX_METRICS;
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//Load Balancing
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int LOAD_BALANCE_ZONE_ID_LOCALITY_ENABLED;
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int LOAD_BALANCE_DC_ID_LOCALITY_ENABLED;
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double LOAD_BALANCE_MAX_BACKOFF;
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double LOAD_BALANCE_START_BACKOFF;
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double LOAD_BALANCE_BACKOFF_RATE;
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int64_t MAX_LAGGING_REQUESTS_OUTSTANDING;
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double INSTANT_SECOND_REQUEST_MULTIPLIER;
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double BASE_SECOND_REQUEST_TIME;
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double SECOND_REQUEST_MULTIPLIER_GROWTH;
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double SECOND_REQUEST_MULTIPLIER_DECAY;
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double SECOND_REQUEST_BUDGET_GROWTH;
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double SECOND_REQUEST_MAX_BUDGET;
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double ALTERNATIVES_FAILURE_RESET_TIME;
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double ALTERNATIVES_FAILURE_MIN_DELAY;
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double ALTERNATIVES_FAILURE_DELAY_RATIO;
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double ALTERNATIVES_FAILURE_MAX_DELAY;
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double ALTERNATIVES_FAILURE_SLOW_DELAY_RATIO;
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double ALTERNATIVES_FAILURE_SLOW_MAX_DELAY;
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double ALTERNATIVES_FAILURE_SKIP_DELAY;
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double FUTURE_VERSION_INITIAL_BACKOFF;
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double FUTURE_VERSION_MAX_BACKOFF;
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double FUTURE_VERSION_BACKOFF_GROWTH;
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int LOAD_BALANCE_MAX_BAD_OPTIONS;
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bool LOAD_BALANCE_PENALTY_IS_BAD;
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FlowKnobs(bool randomize = false, bool isSimulated = false);
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};
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extern FlowKnobs const* FLOW_KNOBS;
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#endif
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