<h2>Introduction</h2>
<p>Codemesh's Shared JVM technology is a newly introduced out-of-process alternative to its traditional <a href="in_process.html" class="product">in-process</a> integration. The term "Shared JVM" refers to the f...

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标签: JVM 

生产机器环境JROCKIT:1.5_12版本

jrockit.*.dump的主要内容：

[code]
C Heap : Good; no memory allocations have failed
StackOverFlow: 0 StackOverFlowErrors have occured
OutOfMemory : 0 OutOfMemoryErrors have occured


"resin-29" id=349 idx=0x4d8 tid=6222 lastJavaFrame=(nil)

Stack 0: sta...

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标签: JVM Jrockit 崩溃 StackOverFlowErrors 

切换到幻灯片模式

SCALABILITY AND JVM TUNING STUDY

Abstract
This paper outlines how organizations can gain significant computing optimizations using GigaSpaces
solutions running on Sun UltraSPARC T1-based CoolThread T1000/T2000 (Niagara) servers.
Conclusions and recommendations are based on the results o...

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标签: 优化 JVM 稳定性 

I just realized I am running 1.5.0-beta2 so my test results may change if I get a newer version. Anyway, here is the test code I use. I think it's a lot better than running each test in tandem. It tends to spread out anomalies between the different implementations. In any event, it produces extremel...

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标签: 性能 测试 JVM 虚拟机 速度 

切换到幻灯片模式

However, those new generations of servers also pose new challenges for the software. For instance, to take advantage of the multi-core CPUs, the software application must be able to execute tasks in parallel across the CPUs; to take advantage of the 64-bit memory bandwidth, the application must also be able to manage a large amount of memory efficiently. As a key software platform on enterprise servers, Java Enterprise Edition (Java EE) is on the forefront of this multi-core, 64-bit revolution. Java EE developers must adapt to those challenges to make the most out of hardware investment.

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标签: java JVM multi-core 64-bit X86 

JVM虚拟机性能优化

<div class="wiki-content">
<table cellpadding='5' width='85%' cellspacing='8px' class='infoMacro' border="0" align='center'><colgroup><col width='24'><col></colgroup><tr><td valign='top'><img src...

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标签: 性能 优化 Tuning JVM 

CODE:

---

    void _$3(int i)
    {
        this;
        this;
        JVM INSTR swap ;
        _$4;
        i;
        JVM INSTR iadd ;
        _$4;
    }

---

to

CODE:

---

        _$4 = _$4+i;

---

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标签: JVM INSTR iadd 

下面是混淆后反编出来的代码：

CODE:

---

    Token _$27()
    {
        JVM INSTR new #15  <Class Token>;
        JVM INSTR dup ;
        JVM INSTR swap ;
        _$2.substring(0, _$4());
        _$3;
        _$3 + _$4();
        Token();
        return;
    }

---

to

[code]
return new Tok...

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标签: JVM INSTR swap 混淆器 

#
# An unexpected error has been detected by HotSpot Virtual Machine:
#
# SIGSEGV (0xb) at pc=0x285abaa1, pid=4752, tid=0x84a9600
#
# Java VM: Java HotSpot(TM) Server VM (diablo-1.5.0_07-b01 mixed mode)
# Problematic frame:
# V [libjvm.so+0x420aa1]
#
# An error report file with more infor...

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标签: JDK FreeBSD Resin JVM CRASH 

Tuning for low pause times and high throughput

This tuning example similar to Example 2, but uses the concurrent garbage collector (instead of the parallel throughput collector).
[code]
java -Xmx3550m -Xms3550m -Xmn2g -Xss128k -XX:ParallelGCThreads=20 -XX:+UseConcMarkSweepGC -XX:+UseParNewGC -...

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标签: JVM