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MongoDB与内存 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术

...MongoDB是如何使用内存的,答案自然就清楚了。 据说带着问题学习更有效,那就先看一个MongoDB服务器的top命令结果: shell> top -p $(pidof mongod) Mem: 32872124k total, 30065320k used, 2806804k free, 245020k buffers Swap: 2097144k total, 100k used...
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How can I use threading in Python?

...ses threads instead (an important distinction - use multiple processes for CPU-intensive tasks; threads for (and during) I/O): multiprocessing.dummy replicates the API of multiprocessing, but is no more than a wrapper around the threading module. import urllib2 from multiprocessing.dummy import Po...
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C++特化模板函数的符号多重定义错误问题 - C/C++ - 清泛网 - 专注C/C++及内核技术

C++特化模板函数的符号多重定义错误问题error LNK2005: "void __stdcall SerializeElements<class CLogEvent> ...fatal error LNK1169: 找到一个或多个多重定义的符号.我...特化模板函数SerializeElements时,报重复定义的错误,如下: error LNK2005: "void __std...
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MongoDB与内存 - 大数据 & AI - 清泛网移动版 - 专注C/C++及内核技术

...MongoDB是如何使用内存的,答案自然就清楚了。 据说带着问题学习更有效,那就先看一个MongoDB服务器的top命令结果: shell> top -p $(pidof mongod) Mem: 32872124k total, 30065320k used, 2806804k free, 245020k buffers Swap: 2097144k total, 100k used...
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What is “overhead”?

...ffer a lot with context. In general, it's resources (most often memory and CPU time) that are used, which do not contribute directly to the intended result, but are required by the technology or method that is being used. Examples: Protocol overhead: Ethernet frames, IP packets and TCP segments al...
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Windows远程桌面授权错误(授权超时)等报错信息疑难解答 - 更多技术 - 清...

...错,远程计算机中断了会话。 由于授权协议中发生网络问题,远程会话被中断。 客户端试图连接时,出现了授权错误。(授权超时。) 由于这台计算机没有终端服务器客户端访问许可证,远程会话被中断。该主题列出了可能...
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pycharm running way slow

...ly proper way to fix your specific performance problem is by capturing the CPU profiler snapshot as described in this document and sending it to PyCharm support team, either by submitting a ticket or directly into the issue tracker. After the CPU snapshot is analyzed, PyCharm team will work on a fi...
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Android中Java和JavaScript交互 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...ChromeClient() {}); Uncaught ReferenceError: functionName is not defined 问题出现原因,网页的js代码没有加载完成,就调用了js方法。解决方法是在网页加载完成之后调用js方法: myWebView.setWebViewClient(new WebViewClient() { @Override public void o...
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C++字符串截断时中文的处理问题(中文被截断怎么处理?) - C/C++ - 清泛网...

C++字符串截断时中文的处理问题(中文被截断怎么处理?) 防止后台错误消息中汉字双字节被截断出现乱码if (pRspMsg->RspMsg.buf[pRspMsg->RspMsg.Length() - 2] & 0x80) pRspMsg->Rsp...// 防止后台错误消息中汉字双字节被截断出现乱码 if (pRs...
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关于 __VA_ARGS__ 宽字符版本的问题 - C/C++ - 清泛网 - 专注C/C++及内核技术

关于 __VA_ARGS__ 宽字符版本的问题在写一个可变参数的记录日志函数,考虑到宽字符(Unicode版本)时:#define WIDEN2(x) L ## x#define WIDEN(x) WIDEN2(x)#define __...在写一个可变参数的记录日志函数,考虑到宽字符(Unicode版本)时: #defin...