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/**
* Copyright (C) 2021-present MongoDB, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the Server Side Public License, version 1,
* as published by MongoDB, Inc.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* Server Side Public License for more details.
*
* You should have received a copy of the Server Side Public License
* along with this program. If not, see
* <http://www.mongodb.com/licensing/server-side-public-license>.
*
* As a special exception, the copyright holders give permission to link the
* code of portions of this program with the OpenSSL library under certain
* conditions as described in each individual source file and distribute
* linked combinations including the program with the OpenSSL library. You
* must comply with the Server Side Public License in all respects for
* all of the code used other than as permitted herein. If you modify file(s)
* with this exception, you may extend this exception to your version of the
* file(s), but you are not obligated to do so. If you do not wish to do so,
* delete this exception statement from your version. If you delete this
* exception statement from all source files in the program, then also delete
* it in the license file.
*/
#include <benchmark/benchmark.h>
#include "mongo/db/catalog/collection_catalog.h"
#include "mongo/db/catalog/collection_mock.h"
#include "mongo/db/concurrency/d_concurrency.h"
#include "mongo/db/concurrency/lock_state.h"
#include "mongo/db/operation_context.h"
#include "mongo/db/service_context.h"
#include "mongo/util/uuid.h"
namespace mongo {
namespace {
class LockerImplClientObserver : public ServiceContext::ClientObserver {
public:
LockerImplClientObserver() = default;
~LockerImplClientObserver() = default;
void onCreateClient(Client* client) final {}
void onDestroyClient(Client* client) final {}
void onCreateOperationContext(OperationContext* opCtx) override {
opCtx->setLockState(std::make_unique<LockerImpl>(opCtx->getServiceContext()));
}
void onDestroyOperationContext(OperationContext* opCtx) final {}
};
const ServiceContext::ConstructorActionRegisterer clientObserverRegisterer{
"CollectionCatalogBenchmarkClientObserver",
[](ServiceContext* service) {
service->registerClientObserver(std::make_unique<LockerImplClientObserver>());
},
[](ServiceContext* serviceContext) {}};
ServiceContext* setupServiceContext() {
auto serviceContext = ServiceContext::make();
auto serviceContextPtr = serviceContext.get();
setGlobalServiceContext(std::move(serviceContext));
return serviceContextPtr;
}
void createCollections(OperationContext* opCtx, int numCollections) {
Lock::GlobalLock globalLk(opCtx, MODE_X);
BatchedCollectionCatalogWriter batched(opCtx);
for (auto i = 0; i < numCollections; i++) {
const NamespaceString nss("collection_catalog_bm", std::to_string(i));
CollectionCatalog::write(opCtx, [&](CollectionCatalog& catalog) {
catalog.registerCollection(opCtx,
UUID::gen(),
std::make_shared<CollectionMock>(nss),
/*ts=*/boost::none);
});
}
}
} // namespace
void BM_CollectionCatalogWrite(benchmark::State& state) {
auto serviceContext = setupServiceContext();
ThreadClient threadClient(serviceContext);
ServiceContext::UniqueOperationContext opCtx = threadClient->makeOperationContext();
createCollections(opCtx.get(), state.range(0));
for (auto _ : state) {
benchmark::ClobberMemory();
CollectionCatalog::write(opCtx.get(), [&](CollectionCatalog& catalog) {});
}
}
void BM_CollectionCatalogWriteBatchedWithGlobalExclusiveLock(benchmark::State& state) {
auto serviceContext = setupServiceContext();
ThreadClient threadClient(serviceContext);
ServiceContext::UniqueOperationContext opCtx = threadClient->makeOperationContext();
createCollections(opCtx.get(), state.range(0));
Lock::GlobalLock globalLk(opCtx.get(), MODE_X);
BatchedCollectionCatalogWriter batched(opCtx.get());
for (auto _ : state) {
benchmark::ClobberMemory();
CollectionCatalog::write(opCtx.get(), [&](CollectionCatalog& catalog) {});
}
}
BENCHMARK(BM_CollectionCatalogWrite)->Ranges({{{1}, {100'000}}});
BENCHMARK(BM_CollectionCatalogWriteBatchedWithGlobalExclusiveLock)->Ranges({{{1}, {100'000}}});
} // namespace mongo
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