Skip to content
体验新版
项目
组织
正在加载...
登录
切换导航
打开侧边栏
openanolis
dragonwell8_hotspot
提交
d1fbc0c2
D
dragonwell8_hotspot
项目概览
openanolis
/
dragonwell8_hotspot
通知
2
Star
2
Fork
0
代码
文件
提交
分支
Tags
贡献者
分支图
Diff
Issue
0
列表
看板
标记
里程碑
合并请求
0
Wiki
0
Wiki
分析
仓库
DevOps
项目成员
Pages
D
dragonwell8_hotspot
项目概览
项目概览
详情
发布
仓库
仓库
文件
提交
分支
标签
贡献者
分支图
比较
Issue
0
Issue
0
列表
看板
标记
里程碑
合并请求
0
合并请求
0
Pages
分析
分析
仓库分析
DevOps
Wiki
0
Wiki
成员
成员
收起侧边栏
关闭侧边栏
动态
分支图
创建新Issue
提交
Issue看板
提交
d1fbc0c2
编写于
5月 30, 2014
作者:
P
pliden
浏览文件
操作
浏览文件
下载
电子邮件补丁
差异文件
8042310: TestStringDeduplicationMemoryUsage test failing
Reviewed-by: ehelin, jwilhelm
上级
972b5590
变更
2
隐藏空白更改
内联
并排
Showing
2 changed file
with
0 addition
and
125 deletion
+0
-125
test/gc/g1/TestStringDeduplicationMemoryUsage.java
test/gc/g1/TestStringDeduplicationMemoryUsage.java
+0
-36
test/gc/g1/TestStringDeduplicationTools.java
test/gc/g1/TestStringDeduplicationTools.java
+0
-89
未找到文件。
test/gc/g1/TestStringDeduplicationMemoryUsage.java
已删除
100644 → 0
浏览文件 @
972b5590
/*
* Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code 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 GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/*
* @test TestStringDeduplicationMemoryUsage
* @summary Test string deduplication memory usage
* @bug 8029075
* @key gc
* @library /testlibrary
*/
public
class
TestStringDeduplicationMemoryUsage
{
public
static
void
main
(
String
[]
args
)
throws
Exception
{
TestStringDeduplicationTools
.
testMemoryUsage
();
}
}
test/gc/g1/TestStringDeduplicationTools.java
浏览文件 @
d1fbc0c2
...
...
@@ -294,55 +294,6 @@ class TestStringDeduplicationTools {
}
}
private
static
class
MemoryUsageTest
{
public
static
void
main
(
String
[]
args
)
{
System
.
out
.
println
(
"Begin: MemoryUsageTest"
);
final
boolean
useStringDeduplication
=
Boolean
.
parseBoolean
(
args
[
0
]);
final
int
numberOfStrings
=
LargeNumberOfStrings
;
final
int
numberOfUniqueStrings
=
1
;
ArrayList
<
String
>
list
=
createStrings
(
numberOfStrings
,
numberOfUniqueStrings
);
forceDeduplication
(
DefaultAgeThreshold
,
FullGC
);
if
(
useStringDeduplication
)
{
verifyStrings
(
list
,
numberOfUniqueStrings
);
}
System
.
gc
();
System
.
out
.
println
(
"Heap Memory Usage: "
+
ManagementFactory
.
getMemoryMXBean
().
getHeapMemoryUsage
().
getUsed
());
System
.
out
.
println
(
"Array Header Size: "
+
unsafe
.
ARRAY_CHAR_BASE_OFFSET
);
System
.
out
.
println
(
"End: MemoryUsageTest"
);
}
public
static
OutputAnalyzer
run
(
boolean
useStringDeduplication
)
throws
Exception
{
String
[]
extraArgs
=
new
String
[
0
];
if
(
useStringDeduplication
)
{
extraArgs
=
new
String
[]
{
"-XX:+UseStringDeduplication"
,
"-XX:+PrintStringDeduplicationStatistics"
,
"-XX:StringDeduplicationAgeThreshold="
+
DefaultAgeThreshold
};
}
String
[]
defaultArgs
=
new
String
[]
{
"-XX:+PrintGC"
,
"-XX:+PrintGCDetails"
,
MemoryUsageTest
.
class
.
getName
(),
""
+
useStringDeduplication
};
ArrayList
<
String
>
args
=
new
ArrayList
<
String
>();
args
.
addAll
(
Arrays
.
asList
(
extraArgs
));
args
.
addAll
(
Arrays
.
asList
(
defaultArgs
));
return
runTest
(
args
.
toArray
(
new
String
[
args
.
size
()]));
}
}
/*
* Tests
*/
...
...
@@ -480,44 +431,4 @@ class TestStringDeduplicationTools {
OutputAnalyzer
output
=
InternedTest
.
run
();
output
.
shouldHaveExitValue
(
0
);
}
public
static
void
testMemoryUsage
()
throws
Exception
{
// Test that memory usage is reduced after deduplication
OutputAnalyzer
output
;
final
String
heapMemoryUsagePattern
=
"Heap Memory Usage: (\\d+)"
;
final
String
arrayHeaderSizePattern
=
"Array Header Size: (\\d+)"
;
// Run without deduplication
output
=
MemoryUsageTest
.
run
(
false
);
output
.
shouldHaveExitValue
(
0
);
final
long
heapMemoryUsageWithoutDedup
=
Long
.
parseLong
(
output
.
firstMatch
(
heapMemoryUsagePattern
,
1
));
final
long
arrayHeaderSizeWithoutDedup
=
Long
.
parseLong
(
output
.
firstMatch
(
arrayHeaderSizePattern
,
1
));
// Run with deduplication
output
=
MemoryUsageTest
.
run
(
true
);
output
.
shouldHaveExitValue
(
0
);
final
long
heapMemoryUsageWithDedup
=
Long
.
parseLong
(
output
.
firstMatch
(
heapMemoryUsagePattern
,
1
));
final
long
arrayHeaderSizeWithDedup
=
Long
.
parseLong
(
output
.
firstMatch
(
arrayHeaderSizePattern
,
1
));
// Sanity check to make sure one instance isn't using compressed class pointers and the other not
if
(
arrayHeaderSizeWithoutDedup
!=
arrayHeaderSizeWithDedup
)
{
throw
new
Exception
(
"Unexpected difference between array header sizes"
);
}
// Calculate expected memory usage with deduplication enabled. This calculation does
// not take alignment and padding into account, so it's a conservative estimate.
final
long
sizeOfChar
=
unsafe
.
ARRAY_CHAR_INDEX_SCALE
;
final
long
sizeOfCharArray
=
StringLength
*
sizeOfChar
+
arrayHeaderSizeWithoutDedup
;
final
long
bytesSaved
=
(
LargeNumberOfStrings
-
1
)
*
sizeOfCharArray
;
final
long
heapMemoryUsageWithDedupExpected
=
heapMemoryUsageWithoutDedup
-
bytesSaved
;
System
.
out
.
println
(
"Memory usage summary:"
);
System
.
out
.
println
(
" heapMemoryUsageWithoutDedup: "
+
heapMemoryUsageWithoutDedup
);
System
.
out
.
println
(
" heapMemoryUsageWithDedup: "
+
heapMemoryUsageWithDedup
);
System
.
out
.
println
(
" heapMemoryUsageWithDedupExpected: "
+
heapMemoryUsageWithDedupExpected
);
if
(
heapMemoryUsageWithDedup
>
heapMemoryUsageWithDedupExpected
)
{
throw
new
Exception
(
"Unexpected memory usage, heapMemoryUsageWithDedup should be less or equal to heapMemoryUsageWithDedupExpected"
);
}
}
}
编辑
预览
Markdown
is supported
0%
请重试
或
添加新附件
.
添加附件
取消
You are about to add
0
people
to the discussion. Proceed with caution.
先完成此消息的编辑!
取消
想要评论请
注册
或
登录