大约有 31 项符合查询结果(耗时:0.0160秒) [XML]

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Calculating distance between two points, using latitude longitude?

...ou need speed and all the calculations you're making are short (maybe < 100m or so). I found this little approximation to work great. it assumes the world is flat mind you, so don't use it for long distances, it works by approximating the distance of a single Latitude and Longitude at the given...
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Reduce git repository size

... In my case, I pushed several big (> 100Mb) files and then proceeded to remove them. But they were still in the history of my repo, so I had to remove them from it as well. What did the trick was: bfg -b 100M # To remove all blobs from history, whose size is su...
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The remote end hung up unexpectedly while git cloning

...ig --global http.postBuffer 500M git config --global http.maxRequestBuffer 100M git config --global core.compression 0 share | improve this answer | follow | ...
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How do SQL EXISTS statements work?

...uery do you think will run faster if suppliers has 10M rows and orders has 100M rows and why? – Teja Apr 11 '17 at 19:08 add a comment  |  ...
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NTFS performance and large volumes of files and directories

...a) Make plans to sub-divide them into sub-folders (e.g., lets say you have 100M files. It's better to store them in 1000 folders so that you only have 100,000 files per folder than to store them into 1 big folder. This will create 1000 folder indices instead of a single big one that's more likely to...
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How to echo with different colors in the Windows command line

...ite[0m echo. echo [101;93m STRONG BACKGROUND COLORS [0m echo ^<ESC^>[100m [100mBlack[0m echo ^<ESC^>[101m [101mRed[0m echo ^<ESC^>[102m [102mGreen[0m echo ^<ESC^>[103m [103mYellow[0m echo ^<ESC^>[104m [104mBlue[0m echo ^<ESC^>[105m [105mMagenta[0m echo ^<ESC^&g...
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Which parallel sorting algorithm has the best average case performance?

...nt of memory needed. You may want to consider this when sorting upwards of 100M elements as you stated. I see you are looking to sort on a system with 8-32 cores. The PSRS algorithm avoids contention at the shared resource, allowing speedup at higher numbers of processes. I have demonstrated the al...
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dd: How to calculate optimal blocksize? [closed]

...f=/dev/zero of=zero bs=8M; rm zero I experimented with values from 4K to 100M. After letting dd to run for a while I killed it (Ctlr+C) and read the output: 36+0 records in 36+0 records out 301989888 bytes (302 MB) copied, 15.8341 s, 19.1 MB/s As dd displays the input/output rate (19.1MB/s in ...
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Declaring variables inside or outside of a loop

...pository: https://github.com/gunduru/jvdt Test Results for double case and 100M loop (and yes all JVM details): https://microbenchmarks.appspot.com/runs/b1cef8d1-0e2c-4120-be61-a99faff625b4 DeclaredBefore 1,759.209 ns DeclaredInside 2,242.308 ns Partial Test Code for double Declaration This ...
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How can I repeat a character in Bash?

... '\0' '=' >/dev/null version. Of course you have to use a block size of 100M+ to measure the time difference reasonably. 100M bytes takes 1.7 s and 1 s with the two respective versions shown. I took off the tr and just dumped it to /dev/null and got 0.287 s for the head version and 0.675 s for th...