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Http长连接200万尝试及调优 - 更多技术 - 清泛网 - 专注C/C++及内核技术

... eth0 (bnx2):Broadcom NetXtreme II BCM5709 Gigabit Ethernet,1000Mb/s OS: RHEL Server 5.4 (Tikanga), Linux 2.6.18-164.el5 x86_64, 64-bit 服务端程序很简单,基于nginx写的一个comet模块,该模块接受用户的请求,然后保持用户的连接,而不返回...
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Why is reading lines from stdin much slower in C++ than Python?

...tl;dr: Because of different default settings in C++ requiring more system calls. By default, cin is synchronized with stdio, which causes it to avoid any input buffering. If you add this to the top of your main, you should see much better performance: std::ios_base::sync_with_stdio(false); Normall...
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What is the difference between connection and read timeout for sockets?

...dshake. The read timeout is the timeout on waiting to read data1. Specifically, if the server fails to send a byte <timeout> seconds after the last byte, a read timeout error will be raised. 2) What does connection timeout set to "infinity" mean? In what situation can it remain in an infi...
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The command rbenv install is missing

In Ubuntu 10.04 I just installed rbenv . The install command is not present. 8 Answers ...
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Setting DEBUG = False causes 500 Error

...erver), and there is no error info in Apache error log and it will run normally when I change debug to True . 31 Answer...
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How do I make a Mac Terminal pop-up/alert? Applescript?

...ice, whatever that displays my custom text. How is this done? Also, is it possible to make one with several buttons that sets a variable? ...
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Group vs role (Any real difference?)

...effectively inherits those permissions when he acts under that role. Typically your group membership remains during the duration of your login. A role, on the other hand, can be activated according to specific conditions. If your current role is 'medical-staff' you might be able to see some of the ...
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How should one go about choosing a default TCP/IP port for a new service?

...d one go about selecting a default port? Assume that this app will be installed on many computers, and that avoiding port conflicts is desired. ...
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Viewing contents of a .jar file

... I usually open them with 7-Zip... It allows at least to see packages and classes and resources. Should I need to see methods or fields, I would use Jad but of course, it is better to rely on (good) JavaDoc... Now, somewhere on SO...
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“An attempt was made to load a program with an incorrect format” even when the platforms are the sam

I'm calling functions from a 32-bit unmanaged DLL on a 64-bit system. What I get is: 20 Answers ...