238 lines
8.4 KiB
C++
238 lines
8.4 KiB
C++
/*
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* DDBalance.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 "fdbserver/workloads/workloads.actor.h"
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#include "flow/actorcompiler.h" // This must be the last #include.
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struct DDBalanceWorkload : TestWorkload {
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int actorsPerClient, nodesPerActor, moversPerClient, currentbin, binCount, writesPerTransaction, keySpaceDriftFactor;
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double testDuration, warmingDelay, transactionsPerSecond;
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bool discardEdgeMeasurements;
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vector<Future<Void>> clients;
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PerfIntCounter bin_shifts,operations, retries;
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ContinuousSample<double> latencies;
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DDBalanceWorkload(WorkloadContext const& wcx)
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: TestWorkload(wcx), latencies( 2000 ),
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bin_shifts("Bin_Shifts"),operations("Operations"), retries("Retries")
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{
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testDuration = getOption( options, LiteralStringRef("testDuration"), 10.0 );
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binCount = getOption( options, LiteralStringRef("binCount"), 1000 );
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writesPerTransaction = getOption( options, LiteralStringRef("writesPerTransaction"), 1 );
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keySpaceDriftFactor = getOption( options, LiteralStringRef("keySpaceDriftFactor"), 1 );
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moversPerClient = std::max(getOption( options, LiteralStringRef("moversPerClient"), 10 ), 1);
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actorsPerClient = std::max(getOption( options, LiteralStringRef("actorsPerClient"), 100 ), 1);
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int nodes = getOption( options, LiteralStringRef("nodes"), 10000 );
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discardEdgeMeasurements = getOption( options, LiteralStringRef("discardEdgeMeasurements"), true );
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warmingDelay = getOption( options, LiteralStringRef("warmingDelay"), 0.0 );
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transactionsPerSecond = getOption( options, LiteralStringRef("transactionsPerSecond"), 5000.0 ) / (clientCount * moversPerClient);
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nodesPerActor = nodes/(actorsPerClient*clientCount);
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currentbin = deterministicRandom()->randomInt(0,binCount);
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}
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virtual std::string description() { return "DDBalance"; }
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virtual Future<Void> setup( Database const& cx ) {
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return ddbalanceSetup( cx, this );
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}
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virtual Future<Void> start( Database const& cx ) {
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return _start( cx, this );
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}
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ACTOR Future<Void> _start( Database cx, DDBalanceWorkload *self ) {
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for(int c=0; c<self->moversPerClient; c++)
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self->clients.push_back(
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timeout(
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self->ddBalanceMover( cx, self, c ), self->testDuration, Void()) );
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wait( waitForAll( self->clients ) );
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return Void();
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}
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virtual Future<bool> check( Database const& cx ) {
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bool ok = true;
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for( int i = 0; i < clients.size(); i++ )
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if( clients[i].isError() )
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ok = false;
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clients.clear();
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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 * (discardEdgeMeasurements ? 0.75 : 1.0);
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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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m.push_back( bin_shifts.getMetric() );
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m.push_back( PerfMetric( "Mean Latency (ms)", 1000 * latencies.mean(), true ) );
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m.push_back( PerfMetric( "Median Latency (ms, averaged)", 1000 * latencies.median(), true ) );
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m.push_back( PerfMetric( "90% Latency (ms, averaged)", 1000 * latencies.percentile( 0.90 ), true ) );
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m.push_back( PerfMetric( "98% Latency (ms, averaged)", 1000 * latencies.percentile( 0.98 ), true ) );
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}
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Key key( int bin, int n, int actorid, int clientid ) { return StringRef(format("%08x%08x%08x%08x",bin,n,actorid,clientid));}
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Value value( int n ) { return doubleToTestKey( n ); }
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ACTOR Future<Void> setKeyIfNotPresent( Transaction *tr, Key key, Value val) {
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Optional<Value> f = wait( tr->get(key));
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if (!f.present())
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tr->set( key, val);
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return Void();
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}
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ACTOR Future<Void> ddbalanceSetupRange( Database cx, DDBalanceWorkload* self, int begin, int end ) {
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state Transaction tr(cx);
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loop {
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try {
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std::vector<Future<Void>> setActors;
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for(int n=begin; n<end; n++) {
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int objectnum = n / self->moversPerClient;
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int moverid = n % self->moversPerClient;
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setActors.push_back(self->setKeyIfNotPresent(&tr, self->key(self->currentbin,objectnum,moverid,self->clientId), self->value(objectnum)));
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}
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wait( waitForAll(setActors) );
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wait( tr.commit() );
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break;
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} catch (Error& e) {
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wait( tr.onError(e) );
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}
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}
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return Void();
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}
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ACTOR Future<Void> ddbalanceSetup( Database cx, DDBalanceWorkload* self ) {
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state int i;
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state vector<int> order;
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for(int o = 0; o <= self->nodesPerActor * self->actorsPerClient / 10; o++) order.push_back(o*10);
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deterministicRandom()->randomShuffle(order);
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for(i=0; i<order.size(); ) {
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vector<Future<Void>> fs;
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for(int j=0; j<100 && i<order.size(); j++) {
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fs.push_back( self->ddbalanceSetupRange(cx, self, order[i], order[i]+10));
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i++;
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}
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wait( waitForAll(fs) );
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}
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if( self->warmingDelay > 0 ) {
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wait( timeout( databaseWarmer( cx ), self->warmingDelay, Void() ) );
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}
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return Void();
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}
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bool shouldRecord( double clientBegin ) {
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double n = now();
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return !discardEdgeMeasurements ||
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(n > (clientBegin + testDuration * 0.125) && n < (clientBegin + testDuration * 0.875));
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}
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ACTOR Future<Void> ddBalanceWorker( Database cx, DDBalanceWorkload *self, int moverId, int sourceBin, int destinationBin, int begin, int end, double clientBegin, double *lastTime, double delay ) {
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state int i;
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state int j;
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state int moves;
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state int maxMovedAmount = 0;
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for(i = begin; i < end;) {
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wait( poisson( lastTime, delay ) );
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state double tstart = now();
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state Transaction tr(cx);
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loop {
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state int startvalue = i;
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moves = 0;
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try {
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for(j = 0; i < end && j < self->writesPerTransaction; j++) {
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state Key myKey = self->key(sourceBin,i,moverId,self->clientId);
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state Key nextKey = self->key(destinationBin,i,moverId,self->clientId);
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moves++;
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i++;
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Optional<Value> f = wait(tr.get(myKey));
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if (f.present()) {
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maxMovedAmount++;
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tr.set(nextKey, f.get());
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tr.clear(myKey);
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}
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else {
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TraceEvent("KeyNotPresent").detail("ClientId", self->clientId).detail("MoverId", moverId)
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.detail("CurrentBin", sourceBin).detail("NextBin", destinationBin);
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}
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}
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wait( tr.commit() );
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break;
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} catch (Error& e) {
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wait( tr.onError(e) );
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if( self->shouldRecord( clientBegin ) )
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++self->retries;
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i = startvalue;
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}
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}
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tr = Transaction();
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if( self->shouldRecord( clientBegin ) ) {
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self->operations += 3*moves;
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double latency = now() - tstart;
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self->latencies.addSample( latency );
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}
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}
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if(maxMovedAmount < end-begin) {
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TraceEvent(SevError, "LostKeys").detail("MaxMoved",maxMovedAmount).detail("ShouldHaveMoved",end-begin).detail("ClientId", self->clientId).detail("MoverId", moverId)
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.detail("CurrentBin", sourceBin).detail("NextBin", destinationBin);
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ASSERT( false );
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}
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return Void();
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}
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ACTOR Future<Void> ddBalanceMover( Database cx, DDBalanceWorkload *self, int moverId ) {
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state int currentBin = self->currentbin;
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state int nextBin = 0;
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state int key_space_drift = 0;
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state double clientBegin = now();
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state double lastTime = now();
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loop {
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nextBin = deterministicRandom()->randomInt(key_space_drift,self->binCount+key_space_drift);
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while(nextBin == currentBin) nextBin = deterministicRandom()->randomInt(key_space_drift,self->binCount+key_space_drift);
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vector<Future<Void>> fs;
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for (int i = 0; i < self->actorsPerClient / self->moversPerClient; i++)
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fs.push_back( self->ddBalanceWorker(cx, self, moverId, currentBin, nextBin, i*self->nodesPerActor, (i+1)*self->nodesPerActor, clientBegin, &lastTime, 1.0 / self->transactionsPerSecond));
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wait( waitForAll(fs) );
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currentBin = nextBin;
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key_space_drift += self->keySpaceDriftFactor;
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++self->bin_shifts;
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}
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}
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};
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WorkloadFactory<DDBalanceWorkload> DDBalanceWorkloadFactory("DDBalance");
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