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select、poll、epoll之间的区别总结[整理] - C/C++ - 清泛网 - 专注C/C++及内核技术
...），还是没人唤醒，则调用select的进程会重新被唤醒获得CPU，进而重新遍历fd，判断有没有就绪的fd。
（8）把fd_set从内核空间拷贝到用户空间。
总结：
select的几大缺点：
（1）每次调用select，都需要把fd集合从用户态拷贝到...
How to execute raw SQL in Flask-SQLAlchemy app
...dited May 29 at 9:50
Ilja Everilä
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answered Sep 15 '13 at 4:35
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How to find if a native DLL file is compiled as x64 or x86?
...hat DUMPBIN says is 32-bit ("14C machine (x86)"), but corflags says is Any CPU ("PE: PE32, 32BIT: 0"). Dependency Walker also misdiagnoses it.
– Pierre
Aug 27 '13 at 14:54
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How do I remove newlines from a text file?
...described here stackoverflow.com/q/16414410/54964
– Léo Léopold Hertz 준영
Nov 5 '16 at 13:23
To route the output ...
CSS force image resize and keep aspect ratio
... answered Aug 19 '16 at 12:35
Théo T. CarranzaThéo T. Carranza
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How to capture UIView to UIImage without loss of quality on retina display
... May 30 '19 at 16:12
Linus Unnebäck
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answered Mar 19 '14 at 2:09
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Asynctask vs Thread in android
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For long-running or CPU-intensive tasks, there are basically two ways to do this: Java threads, and Android's native AsyncTask.
Neither one is necessarily better than the other, but knowing when to use each call is essential to leveraging the s...
What must I know to use GNU Screen properly? [closed]
... k should be added to the list to close a window.
– Léo Léopold Hertz 준영
Apr 30 '09 at 21:26
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Can I prevent the Firefox developer tools network panel from clearing on page reload?
...een (for those who haven't an english version of the settings, in fr : "Préférence générales/activer les journaux persistants")
– pdem
May 2 '17 at 12:51
1
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Storing time-series data, relational or non?
... creating a system which polls devices for data on varying metrics such as CPU utilisation, disk utilisation, temperature etc. at (probably) 5 minute intervals using SNMP. The ultimate goal is to provide visualisations to a user of the system in the form of time-series graphs.
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