大约有 37,000 项符合查询结果（耗时：0.0330秒） [XML]
Condition within JOIN or WHERE
...n think of 4 queries in the last week with very different execution plans, CPU times, and logical reads when I moved where predicates to the join.
– marr75
Jun 19 '09 at 16:58
2
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How often should you use git-gc?
... the user does not know, naturally they complain about 'gc --auto' wasting CPU.
Daemonized gc now saves stderr to $GIT_DIR/gc.log.
Following gc --auto will not run and gc.log printed out until the user removes gc.log.
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How does `scp` differ from `rsync`?
... encryption also has a major impact on your transfer speed, as well as the CPU overhead. (My experience is that rsync can be significantly faster than scp.)
Check out this post for when rsync has encryption on.
share
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Why is there no xrange function in Python3?
... but every time i use range i hear that huge distressing fan sound meaning cpu is on it's worst, while xrange doesn't do it. Think you about it ;)
– catalesia
Feb 22 '13 at 0:16
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Scalar vs. primitive data type - are they the same thing?
...ar processor' in contrast to a 'vector processor'. A scalar processor is a CPU that can only handle one piece of data at a time. These processors were/are named after the arithmetic terms. Interestingly enough, when you look up 'scalar' on wikipedia, you get redirected to 'variable'.
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How do I execute a command and get the output of the command within C++ using POSIX?
...ed ;)
{
// Give some timeslice (50 ms), so we won't waste 100% CPU.
bProcessEnded = WaitForSingleObject( pi.hProcess, 50) == WAIT_OBJECT_0;
// Even if process exited - we continue reading, if
// there is some data available over pipe.
for (;;)
{
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Advantages to Using Private Static Methods
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Passing an extra parameter means the CPU has to do extra work to place that parameter in a register, and push it onto the stack if the instance method calls out to another method.
– Kent Boogaart
Sep 25 '08 at 18:33
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PHP foreach change original array values
...est your specific scenario and determine which option uses less memory and CPU time. For more information see the SO post linked below by NikiC.
Code readability.
Creating references in PHP is something that quickly gets out of hand. If you are a novice and don't have full control of what you are d...
What is the best algorithm for overriding GetHashCode?
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Incidentally, 31 is a shift and subtract on the CPU, which is exceedingly fast.
– Chui Tey
Aug 22 '13 at 23:14
4
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Why can't C compilers rearrange struct members to eliminate alignment padding? [duplicate]
...lation unit (for example: a foreign library, a file on disc, network data, CPU page tables, ...). In such a case the binary structure of data is also defined in a place inaccessible to the compiler, so reordering the struct fields would create a data type that is inconsistent with the other definiti...