117 lines
4.2 KiB
C++
117 lines
4.2 KiB
C++
/*
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* RandomClogging.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 "fdbclient/NativeAPI.h"
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#include "fdbserver/TesterInterface.h"
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#include "fdbserver/workloads/workloads.h"
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#include "fdbrpc/simulator.h"
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#include "flow/actorcompiler.h" // This must be the last #include.
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struct RandomCloggingWorkload : TestWorkload {
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bool enabled;
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double testDuration;
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double scale, clogginess;
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int swizzleClog;
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RandomCloggingWorkload(WorkloadContext const& wcx)
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: TestWorkload(wcx)
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{
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enabled = !clientId; // only do this on the "first" client
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testDuration = getOption( options, LiteralStringRef("testDuration"), 10.0 );
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scale = getOption( options, LiteralStringRef("scale"), 1.0 );
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clogginess = getOption( options, LiteralStringRef("clogginess"), 1.0 );
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swizzleClog = getOption( options, LiteralStringRef("swizzle"), 0 );
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}
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virtual std::string description() { if (&g_simulator == g_network) return "RandomClogging"; else return "NoRC"; }
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virtual Future<Void> setup( Database const& cx ) { return Void(); }
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virtual Future<Void> start( Database const& cx ) {
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if (&g_simulator == g_network && enabled)
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return timeout(
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reportErrors( swizzleClog ? swizzleClogClient(this) : clogClient(this), "RandomCloggingError" ),
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testDuration, Void() );
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else
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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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return true;
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}
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virtual void getMetrics( vector<PerfMetric>& m ) {
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}
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ACTOR void doClog( ISimulator::ProcessInfo* machine, double t, double delay = 0.0 ) {
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wait(::delay(delay));
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g_simulator.clogInterface( machine->address.ip, t );
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}
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void clogRandomPair( double t ) {
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auto m1 = g_random->randomChoice( g_simulator.getAllProcesses() );
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auto m2 = g_random->randomChoice( g_simulator.getAllProcesses() );
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if( m1->address.ip != m2->address.ip )
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g_simulator.clogPair( m1->address.ip, m2->address.ip, t );
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}
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ACTOR Future<Void> clogClient(RandomCloggingWorkload* self) {
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state double lastTime = now();
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state double workloadEnd = now() + self->testDuration;
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loop {
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wait( poisson( &lastTime, self->scale / self->clogginess ) );
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auto machine = g_random->randomChoice( g_simulator.getAllProcesses() );
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double t = self->scale * 10.0 * exp( -10.0 * g_random->random01() );
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t = std::max(0.0, std::min(t, workloadEnd - now()));
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self->doClog(machine,t);
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t = self->scale * 20.0 * exp( -10.0 * g_random->random01() );
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t = std::max(0.0, std::min(t, workloadEnd - now()));
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self->clogRandomPair(t);
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}
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}
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ACTOR Future<Void> swizzleClogClient(RandomCloggingWorkload* self) {
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state double lastTime = now();
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state double workloadEnd = now() + self->testDuration;
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loop {
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wait( poisson( &lastTime, self->scale / self->clogginess ) );
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double t = self->scale * 10.0 * exp( -10.0 * g_random->random01() );
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t = std::max(0.0, std::min(t, workloadEnd - now()));
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// randomly choose half of the machines in the cluster to all clog up,
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// then unclog in a different order over the course of t seconds
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vector<ISimulator::ProcessInfo*> swizzled;
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vector<double> starts, ends;
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for (int m=0;m<g_simulator.getAllProcesses().size(); m++)
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if (g_random->random01() < 0.5){
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swizzled.push_back(g_simulator.getAllProcesses()[m]);
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starts.push_back(g_random->random01() * t / 2);
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ends.push_back(g_random->random01() * t / 2 + t / 2);
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}
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for(int i=0; i<10; i++)
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self->clogRandomPair(t);
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vector<Future<Void>> cloggers;
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for (int i=0;i<swizzled.size();i++)
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self->doClog(swizzled[i], ends[i]-starts[i], starts[i]);
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}
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}
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};
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WorkloadFactory<RandomCloggingWorkload> RandomCloggingWorkloadFactory("RandomClogging");
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