foundationdb/flow/Knobs.h

167 lines
4.4 KiB
C++

/*
* Knobs.h
*
* This source file is part of the FoundationDB open source project
*
* Copyright 2013-2018 Apple Inc. and the FoundationDB project authors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef FLOW_KNOBS_H
#define FLOW_KNOBS_H
#pragma once
#include "Platform.h"
#include <map>
#include <string>
#include <stdint.h>
class Knobs {
public:
bool setKnob( std::string const& name, std::string const& value ); // Returns true if the knob name is known, false if it is unknown
void trace();
protected:
void initKnob( double& knob, double value, std::string const& name );
void initKnob( int64_t& knob, int64_t value, std::string const& name );
void initKnob( int& knob, int value, std::string const& name );
std::map<std::string, double*> double_knobs;
std::map<std::string, int64_t*> int64_knobs;
std::map<std::string, int*> int_knobs;
};
class FlowKnobs : public Knobs {
public:
int AUTOMATIC_TRACE_DUMP;
double PREVENT_FAST_SPIN_DELAY;
double CACHE_REFRESH_INTERVAL_WHEN_ALL_ALTERNATIVES_FAILED;
double DELAY_JITTER_OFFSET;
double DELAY_JITTER_RANGE;
double BUSY_WAIT_THRESHOLD;
double CLIENT_REQUEST_INTERVAL;
int DISABLE_ASSERTS;
double QUEUE_MODEL_SMOOTHING_AMOUNT;
int RANDOMSEED_RETRY_LIMIT;
//slow task profiling
double SLOWTASK_PROFILING_INTERVAL;
double SLOWTASK_PROFILING_MAX_LOG_INTERVAL;
double SLOWTASK_PROFILING_LOG_BACKOFF;
//connectionMonitor
double CONNECTION_MONITOR_LOOP_TIME;
double CONNECTION_MONITOR_TIMEOUT;
//FlowTransport
double CONNECTION_REJECTED_MESSAGE_DELAY;
double CONNECTION_ID_TIMEOUT;
double CONNECTION_CLEANUP_DELAY;
double INITIAL_RECONNECTION_TIME;
double MAX_RECONNECTION_TIME;
double RECONNECTION_TIME_GROWTH_RATE;
double RECONNECTION_RESET_TIME;
//AsyncFileCached
int64_t PAGE_CACHE_4K;
int64_t PAGE_CACHE_64K;
int64_t SIM_PAGE_CACHE_4K;
int64_t SIM_PAGE_CACHE_64K;
int64_t BUGGIFY_SIM_PAGE_CACHE_4K;
int64_t BUGGIFY_SIM_PAGE_CACHE_64K;
int MAX_EVICT_ATTEMPTS;
//AsyncFileKAIO
int MAX_OUTSTANDING;
int MIN_SUBMIT;
//AsyncFileNonDurable
double MAX_PRIOR_MODIFICATION_DELAY;
//GenericActors
double MAX_DELIVER_DUPLICATE_DELAY;
double BUGGIFY_FLOW_LOCK_RELEASE_DELAY;
//IAsyncFile
int64_t INCREMENTAL_DELETE_TRUNCATE_AMOUNT;
double INCREMENTAL_DELETE_INTERVAL;
//Net2
double MIN_COALESCE_DELAY;
double MAX_COALESCE_DELAY;
double SLOW_LOOP_CUTOFF;
double SLOW_LOOP_SAMPLING_RATE;
int64_t TSC_YIELD_TIME;
int64_t REACTOR_FLAGS;
//Network
int64_t PACKET_LIMIT;
int64_t PACKET_WARNING; // 2MB packet warning quietly allows for 1MB system messages
double TIME_OFFSET_LOGGING_INTERVAL;
//Sim2
//FIMXE: more parameters could be factored out
double MIN_OPEN_TIME;
double MAX_OPEN_TIME;
int64_t SIM_DISK_IOPS;
int64_t SIM_DISK_BANDWIDTH;
double MIN_NETWORK_LATENCY;
double FAST_NETWORK_LATENCY;
double SLOW_NETWORK_LATENCY;
double MAX_CLOGGING_LATENCY;
double MAX_BUGGIFIED_DELAY;
//Tracefiles
int ZERO_LENGTH_FILE_PAD;
double TRACE_FLUSH_INTERVAL;
double TRACE_RETRY_OPEN_INTERVAL;
int MIN_TRACE_SEVERITY;
int MAX_TRACE_SUPPRESSIONS;
int TRACE_FSYNC_ENABLED;
//TDMetrics
int64_t MAX_METRIC_SIZE;
int64_t MAX_METRIC_LEVEL;
double METRIC_LEVEL_DIVISOR;
int METRIC_LIMIT_START_QUEUE_SIZE;
int METRIC_LIMIT_RESPONSE_FACTOR;
int MAX_METRICS;
//Load Balancing
double LOAD_BALANCE_MAX_BACKOFF;
double LOAD_BALANCE_START_BACKOFF;
double LOAD_BALANCE_BACKOFF_RATE;
int64_t MAX_LAGGING_REQUESTS_OUTSTANDING;
double INSTANT_SECOND_REQUEST_MULTIPLIER;
double BASE_SECOND_REQUEST_TIME;
double SECOND_REQUEST_MULTIPLIER_GROWTH;
double SECOND_REQUEST_MULTIPLIER_DECAY;
double SECOND_REQUEST_BUDGET_GROWTH;
double SECOND_REQUEST_MAX_BUDGET;
double ALTERNATIVES_FAILURE_RESET_TIME;
double ALTERNATIVES_FAILURE_MAX_DELAY;
double ALTERNATIVES_FAILURE_MIN_DELAY;
double ALTERNATIVES_FAILURE_DELAY_RATIO;
FlowKnobs(bool randomize = false, bool isSimulated = false);
};
extern FlowKnobs const* FLOW_KNOBS;
#endif