1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
|
/**
* Copyright (C) 2018-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.
*/
#ifdef _WIN32
#define NVALGRIND
#endif
#include "mongo/platform/basic.h"
#include <algorithm>
#include <gperftools/malloc_extension.h>
#include <valgrind/valgrind.h>
#include "mongo/base/disallow_copying.h"
#include "mongo/base/init.h"
#include "mongo/base/parse_number.h"
#include "mongo/base/status.h"
#include "mongo/base/status_with.h"
#include "mongo/db/jsobj.h"
#include "mongo/util/mongoutils/str.h"
#include "mongo/util/processinfo.h"
#include "mongo/util/tcmalloc_parameters_gen.h"
namespace mongo {
namespace {
constexpr auto kMaxTotalThreadCacheBytesPropertyName = "tcmalloc.max_total_thread_cache_bytes"_sd;
constexpr auto kAggressiveMemoryDecommitPropertyName = "tcmalloc.aggressive_memory_decommit"_sd;
StatusWith<size_t> getProperty(StringData propname) {
size_t value;
if (!MallocExtension::instance()->GetNumericProperty(propname.toString().c_str(), &value)) {
return {ErrorCodes::InternalError,
str::stream() << "Failed to retreive tcmalloc prop: " << propname};
}
return value;
}
Status setProperty(StringData propname, size_t value) {
if (!RUNNING_ON_VALGRIND) {
if (!MallocExtension::instance()->SetNumericProperty(propname.toString().c_str(), value)) {
return {ErrorCodes::InternalError,
str::stream() << "Failed to set internal tcmalloc property " << propname};
}
}
return Status::OK();
}
StatusWith<size_t> validateTCMallocValue(StringData name, const BSONElement& newValueElement) {
if (!newValueElement.isNumber()) {
return {ErrorCodes::TypeMismatch,
str::stream() << "Expected server parameter " << name
<< " to have numeric type, but found "
<< newValueElement.toString(false)
<< " of type "
<< typeName(newValueElement.type())};
}
long long valueAsLongLong = newValueElement.safeNumberLong();
if (valueAsLongLong < 0 ||
static_cast<unsigned long long>(valueAsLongLong) > std::numeric_limits<size_t>::max()) {
return Status(
ErrorCodes::BadValue,
str::stream() << "Value " << newValueElement.toString(false) << " is out of range for "
<< name
<< "; expected a value between 0 and "
<< std::min<unsigned long long>(std::numeric_limits<size_t>::max(),
std::numeric_limits<long long>::max()));
}
return static_cast<size_t>(valueAsLongLong);
}
} // namespace
#define TCMALLOC_SP_METHODS(cls) \
void TCMalloc##cls##ServerParameter::append( \
OperationContext*, BSONObjBuilder& b, const std::string& name) { \
auto swValue = getProperty(k##cls##PropertyName); \
if (swValue.isOK()) { \
b.appendNumber(name, swValue.getValue()); \
} \
} \
Status TCMalloc##cls##ServerParameter::set(const BSONElement& newValueElement) { \
auto swValue = validateTCMallocValue(name(), newValueElement); \
if (!swValue.isOK()) { \
return swValue.getStatus(); \
} \
return setProperty(k##cls##PropertyName, swValue.getValue()); \
} \
Status TCMalloc##cls##ServerParameter::setFromString(const std::string& str) { \
size_t value; \
Status status = parseNumberFromString(str, &value); \
if (!status.isOK()) { \
return status; \
} \
return setProperty(k##cls##PropertyName, value); \
}
TCMALLOC_SP_METHODS(MaxTotalThreadCacheBytes)
TCMALLOC_SP_METHODS(AggressiveMemoryDecommit)
#undef TCMALLOC_SP_METHODS
namespace {
MONGO_INITIALIZER_GENERAL(TcmallocConfigurationDefaults,
MONGO_NO_PREREQUISITES,
("BeginStartupOptionHandling"))
(InitializerContext*) {
// Before processing the command line options, if the user has not specified a value in via
// the environment, set tcmalloc.max_total_thread_cache_bytes to its default value.
if (getenv("TCMALLOC_MAX_TOTAL_THREAD_CACHE_BYTES")) {
return Status::OK();
}
ProcessInfo pi;
size_t systemMemorySizeMB = pi.getMemSizeMB();
size_t defaultTcMallocCacheSize = 1024 * 1024 * 1024; // 1024MB in bytes
size_t derivedTcMallocCacheSize =
(systemMemorySizeMB / 8) * 1024 * 1024; // 1/8 of system memory in bytes
size_t cacheSize = std::min(defaultTcMallocCacheSize, derivedTcMallocCacheSize);
return setProperty(kMaxTotalThreadCacheBytesPropertyName, cacheSize);
}
} // namespace
} // namespace mongo
|
