大约有 36,000 项符合查询结果（耗时：0.0469秒） [XML]
setTimeout or setInterval?
...to execute than the interval that is set for it, the browser will eat 100% CPU trying to service it, and may become less responsive.
Which do you use and why?
Chained-Timeout gives a guaranteed slot of free time to the browser; Interval tries to ensure the function it is running executes as cl...
iTextSharp - Sending in-memory pdf in an email attachment
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It's not. It's a waste of memory and CPU time because the bytes have to be copied from one to the other.
– Serguei Fedorov
Jun 4 '15 at 21:09
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The name does not exist in the namespace error in XAML
... With VS2015U2, I still get this issue in x64. Works great in Any CPU. Switching back and forth doesn't work for me.
– DaleyKD
May 13 '16 at 13:53
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How does BitLocker affect performance? [closed]
...r and core synchronization with no overhead, and that nothing requires the CPU in the same time (that one hell of an assumption, actually). The X25-M G2 is announced at 250 MB/s read bandwidth (that's what the specs say), so, in "ideal" conditions, BitLocker necessarily involves a bit of a slowdown....
How do I install cygwin components from the command line?
... Nice! setup.exe is now called setup-x86.exe - or a variant depending on cpu bits. Also see here for the package list cygwin.com/packages
– ErichBSchulz
Jan 18 '14 at 6:43
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Can you call Directory.GetFiles() with multiple filters?
...ards to number of extensions) and probably somewhere in the range of a few cpu-cycles... If that's the case it's probably - performance wise - negligible
– BatteryBackupUnit
Jul 22 '14 at 12:39
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jQuery or javascript to find memory usage of page
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Doesn't innerHTML.length take memory or RAM or CPU ( or anything else, I've no idea ) to process also?
– mrReiha
Jun 3 '15 at 22:00
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Does pandas iterrows have performance issues?
... via SIMD instructions. Some parts of Numpy enable SIMD, depending on your CPU and installation process. The benefits to parallelism won't be as dramatic as the static typing and better caching, but they're still a solid win.
Moral of the story: use the vector operations in Numpy and pandas. They ...
Favourite performance tuning tricks [closed]
...he query plan - always.
Turn on STATS, so that you can examine both IO and CPU performance. Focus on driving those numbers down, not necessarily the query time (as that can be influenced by other activity, cache, etc.).
Look for large numbers of rows coming into an operator, but small numbers coming...
Examples of Algorithms which has O(1), O(n log n) and O(log n) complexities
... steps for some constant k. It is not really important whether "steps" are CPU cycles, assembly instructions, or (simple) C operations. That details is hidden by the constant k.
– Igor ostrovsky
Oct 20 '09 at 5:44
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