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std::vector performance regression when enabling C++11
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247
I can reproduce your results on my machine with those options you write in your post.
Howeve...
How to debug Lock wait timeout exceeded on MySQL?
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265
What gives this away is the word transaction. It is evident by the statement that the query w...
How to know what the 'errno' means?
When calling execl(...) , I get an errno=2 . What does it mean? How can I know the meaning of this errno ?
15 Answers
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An efficient way to transpose a file in Bash
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29 Answers
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What is that “total” in the very first line after ls -l? [closed]
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answered Sep 13 '11 at 12:18
MatMat
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Unlink of file failed
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204
That usually means a process is still using that specific file (still has an handle on it)
(on...
In a Bash script, how can I exit the entire script if a certain condition occurs?
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Michael FoukarakisMichael Foukarakis
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How to stop mongo DB in one command
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231
Starting and Stopping MongoDB is covered in the MongoDB manual. It explains the various option...
Is gcc std::unordered_map implementation slow? If so - why?
... found the reason: it is a Problem of gcc-4.7!!
With gcc-4.7
inserts: 37728
get : 2985
With gcc-4.6
inserts: 2531
get : 1565
So std::unordered_map in gcc-4.7 is broken (or my installation, which is an installation of gcc-4.7.0 on Ubuntu - and another installation which is gcc 4.7.1 on d...