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fastest (low latency) method for Inter Process Communication between Java and C/C++
...e send/received,
2 Java processes just spawned, without assigning specific CPU cores with taskset:
TCP - 25 microseconds
Named pipes - 15 microseconds
Now explicitly specifying core masks, like taskset 1 java Srv or taskset 2 java Cli:
TCP, same cores: 30 microsecond...
Error java.lang.OutOfMemoryError: GC overhead limit exceeded
...y, use memory profiling tools like MAT ( Memory analyzer tool), Visual VM etc and fix memory leaks.
Upgrade JDK version to latest version ( 1.8.x) or at least 1.7.x and use G1GC algorithm. . The throughput goal for the G1 GC is 90 percent application time and 10 percent garbage collection time
Apar...
Why is Java's boolean primitive size not defined?
...are managed via your getters and setters. However, you'll pay a penalty in CPU time that is probably bigger than the penalty in memory.
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What is the “FS”/“GS” register intended for?
... used to manage thread-specific memory. The linux kernel uses GS to access cpu-specific memory.
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Is MD5 still good enough to uniquely identify files?
...ly identify it given all the breaking of MD5 algorithm and security issues etc? Security is not my primary concern here, but uniquely identifying each file is.
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那些年 O2O创业我踩了十个坑 - 资讯 - 清泛网 - 专注C/C++及内核技术
...此一来，公司团队看似整齐而豪华，但内部却出现了很多问题，由于大家背景各异，来自于国企、外企和民企，处事风格完全迥异，很多事情在讨论中反复，反复后再讨论，浪费了大量的时间在开会和制定战略中，而且大家的价...
了解 Boost Filesystem Library - C/C++ - 清泛网 - 专注C/C++及内核技术
...于处理文件系统操作的库，这一直是 C++ 语言存在的一个问题。过去，程序员必须使用本机 API 来解决此问题。通过本文您将了解一个提供安全、可移植且易用的 C++ 接口来促进文件系统操作的库：Boost Filesystem Library。
创建与...
How do I measure time elapsed in Java? [duplicate]
...in milliseconds. It has methods methods like split(), suspend(), resume(), etc that allow to take measure at different points of the execution and that you may find convenient. Have a look at it.
System.nanoTime()
You may prefer to use System.nanoTime() if you are looking for extremely precise mea...
C#位运算符（C#按位与、按位或 等） - 更多技术 - 清泛网 - 专注C/C++及内核技术
...为1的位，新数中相应位为0。
（2）取一个数中某些指定位。
如想要取一个整数a（占2个字节）的低（高）字节，只需将a与八进制的377（177400）按位与即可。
（3）保留某一个数的某一位。
与一个数进行&运算...
据说这是一个程序员的手机......... - 轻松一刻 - 清泛网 - 专注C/C++及内核技术
...坏在半路上了。于是两位工程师和一位经理就如何修车的问题展开了讨论。硬件工程师说：“我可以用随身携带的瑞士军刀把车坏的部分拆下来，找出原因，排除故障。”项目经理说：“根据经营管理学，应该召开会议，根据问...