foundationdb/fdbserver/workloads/RandomClogging.actor.cpp

117 lines
4.2 KiB
C++

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