From c7739cfe47ea9099188580022a334e335e4b42ef Mon Sep 17 00:00:00 2001
From: Gregory Wlodarek <gregory.wlodarek@mongodb.com>
Date: Wed, 6 Oct 2021 01:01:00 +0000
Subject: Revert "SERVER-58736 Add benchmark for CollectionCatalog::write()"

This reverts commit 9ced8a4e161b258ed9090645065f330af65ee20b.
---
 src/mongo/db/catalog/SConscript                | 11 ---
 src/mongo/db/catalog/collection_catalog_bm.cpp | 96 --------------------------
 2 files changed, 107 deletions(-)
 delete mode 100644 src/mongo/db/catalog/collection_catalog_bm.cpp

diff --git a/src/mongo/db/catalog/SConscript b/src/mongo/db/catalog/SConscript
index 4fc0369ef08..d43f19135ea 100644
--- a/src/mongo/db/catalog/SConscript
+++ b/src/mongo/db/catalog/SConscript
@@ -268,17 +268,6 @@ env.Library(
     ]
 )
 
-env.Benchmark(
-    target='collection_catalog_bm',
-    source=[
-        'collection_catalog_bm.cpp',
-    ],
-    LIBDEPS=[
-        '$BUILD_DIR/mongo/db/concurrency/lock_manager',
-        'collection_catalog',
-    ],
-)
-
 env.Library(
     target='collection_catalog_helper',
     source=[
diff --git a/src/mongo/db/catalog/collection_catalog_bm.cpp b/src/mongo/db/catalog/collection_catalog_bm.cpp
deleted file mode 100644
index 2452f4f3a39..00000000000
--- a/src/mongo/db/catalog/collection_catalog_bm.cpp
+++ /dev/null
@@ -1,96 +0,0 @@
-/**
- *    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 {
-
-ServiceContext* setupServiceContext() {
-    auto serviceContext = ServiceContext::make();
-    auto serviceContextPtr = serviceContext.get();
-    setGlobalServiceContext(std::move(serviceContext));
-    return serviceContextPtr;
-}
-
-void createCollectionsAndLocker(OperationContext* opCtx, int numCollections) {
-    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));
-        });
-    }
-
-    stdx::lock_guard<Client> lk(cc());
-    opCtx->swapLockState(std::make_unique<LockerImpl>(), lk);
-}
-
-}  // namespace
-
-void BM_CollectionCatalogWrite(benchmark::State& state) {
-    auto serviceContext = setupServiceContext();
-    ThreadClient threadClient(serviceContext);
-    ServiceContext::UniqueOperationContext opCtx = threadClient->makeOperationContext();
-
-    createCollectionsAndLocker(opCtx.get(), state.range(0));
-
-    for (auto _ : state) {
-        benchmark::ClobberMemory();
-        CollectionCatalog::write(opCtx.get(), [&](CollectionCatalog& catalog) {});
-    }
-}
-
-void BM_CollectionCatalogWriteWithGlobalExclusiveLock(benchmark::State& state) {
-    auto serviceContext = setupServiceContext();
-    ThreadClient threadClient(serviceContext);
-    ServiceContext::UniqueOperationContext opCtx = threadClient->makeOperationContext();
-
-    createCollectionsAndLocker(opCtx.get(), state.range(0));
-
-    Lock::GlobalLock globalLk(opCtx.get(), MODE_X);
-
-    for (auto _ : state) {
-        benchmark::ClobberMemory();
-        CollectionCatalog::write(opCtx.get(), [&](CollectionCatalog& catalog) {});
-    }
-}
-
-BENCHMARK(BM_CollectionCatalogWrite)->Ranges({{{1}, {100'000}}});
-BENCHMARK(BM_CollectionCatalogWriteWithGlobalExclusiveLock)->Ranges({{{1}, {100'000}}});
-
-}  // namespace mongo
-- 
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