102 lines
3.1 KiB
C++
102 lines
3.1 KiB
C++
/*
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* LowLatency.actor.cpp
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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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#include "fdbrpc/ContinuousSample.h"
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#include "fdbclient/NativeAPI.actor.h"
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#include "fdbserver/TesterInterface.actor.h"
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#include "fdbclient/ReadYourWrites.h"
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#include "fdbserver/Knobs.h"
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#include "fdbserver/workloads/workloads.actor.h"
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#include "flow/actorcompiler.h" // This must be the last #include.
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struct LowLatencyWorkload : TestWorkload {
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double testDuration;
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double maxLatency;
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double checkDelay;
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PerfIntCounter operations, retries;
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bool ok;
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LowLatencyWorkload(WorkloadContext const& wcx)
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: TestWorkload(wcx), operations("Operations"), retries("Retries") , ok(true)
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{
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testDuration = getOption( options, LiteralStringRef("testDuration"), 600.0 );
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maxLatency = getOption( options, LiteralStringRef("maxLatency"), 20.0 );
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checkDelay = getOption( options, LiteralStringRef("checkDelay"), 1.0 );
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}
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virtual std::string description() { return "LowLatency"; }
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virtual Future<Void> setup( Database const& cx ) {
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return Void();
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}
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virtual Future<Void> start( Database const& cx ) {
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if( clientId == 0 )
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return _start( cx, this );
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return Void();
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}
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ACTOR static Future<Void> _start( Database cx, LowLatencyWorkload* self ) {
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state double testStart = now();
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try {
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loop {
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wait( delay( self->checkDelay ) );
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state Transaction tr( cx );
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state double operationStart = now();
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++self->operations;
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loop {
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try {
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tr.setOption(FDBTransactionOptions::PRIORITY_SYSTEM_IMMEDIATE);
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tr.setOption(FDBTransactionOptions::LOCK_AWARE);
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wait(success(tr.getReadVersion()));
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break;
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} catch( Error &e ) {
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wait( tr.onError(e) );
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++self->retries;
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}
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}
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if(now() - operationStart > self->maxLatency) {
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TraceEvent(SevError, "LatencyTooLarge").detail("MaxLatency", self->maxLatency).detail("ObservedLatency", now() - operationStart);
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self->ok = false;
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}
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if( now() - testStart > self->testDuration )
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break;
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}
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return Void();
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} catch( Error &e ) {
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TraceEvent(SevError, "LowLatencyError").error(e,true);
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throw;
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}
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}
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virtual Future<bool> check( Database const& cx ) {
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return ok;
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}
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virtual void getMetrics( vector<PerfMetric>& m ) {
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double duration = testDuration;
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m.push_back( PerfMetric( "Operations/sec", operations.getValue() / duration, false ) );
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m.push_back( operations.getMetric() );
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m.push_back( retries.getMetric() );
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}
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};
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WorkloadFactory<LowLatencyWorkload> LowLatencyWorkloadFactory("LowLatency");
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