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Why can't C compilers rearrange struct members to eliminate alignment padding? [duplicate]
...ure;
uint16_t minVersion, flag, method, modTime, modDate;
uint32_t crc32, compressedSize, uncompressedSize;
uint16_t nameLength, extraLength;
};
The packed attribute prevents the compiler from aligning the fields according to their natural alignment, and it has no relation to the probl...
Phonegap Cordova installation Windows
...)
├── express@3.0.0 (methods@0.0.1, fresh@0.1.0, range-parser@0.0.4, crc@0.2.0, cookie@0.0.4, commander@0.6.1, debug@0.7.2, mkdirp@0.3.3, send@0.1.0, connect@2.6.0)
├── ripple-emulator@0.9.18 (connect-xcors@0.5.2, colors@0.6.0-1, accounting@0.3.2, request@2.12.0, moment@1.7.2, express@3....
Multiprocessing vs Threading Python [duplicate]
...tel Core i7-7820HQ CPU (4 cores / 8 threads), RAM: 2x Samsung M471A2K43BB1-CRC (2x 16GiB), SSD: Samsung MZVLB512HAJQ-000L7 (3,000 MB/s).
Visualize which threads are running at a given time
This post https://rohanvarma.me/GIL/ taught me that you can run a callback whenever a thread is scheduled wit...
How can I decompress a gzip stream with zlib?
..._DATA_ERROR). If a gzip stream is being decoded, strm->adler is
a crc32 instead of an adler32.
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What do the terms “CPU bound” and “I/O bound” mean?
...tel Core i7-7820HQ CPU (4 cores / 8 threads), RAM: 2x Samsung M471A2K43BB1-CRC (2x 16GiB) I get results like this:
Plot data.
Note that there is a lot of variance between run however. But I can't increase the array size much further since I'm already at 8GiB, and I'm not in the mood for statistics ...
廉价共享存储解决方案1-drbd+ha+nfs - 更多技术 - 清泛网 - 专注C/C++及内核技术
...载模块
modprobe drbd
lsmod | grep drbd
drbd 376868 0
libcrc32c 1246 1 drbd
3.3.5编译安装drbd-utils
----------------------------
cd /usr/local/src/drbd-utils-8.9.3
这里用了--without-83support，因为安装的是8.4以上版本
/configure --prefix=/us...
What does “S3 methods” mean in R?
...n of the numerous R object systems according to "Advanced R, 2nd edition" (CRC Press, 2019) by Hadley Wickham (Chief Scientist at RStudio), which has a web representation here, based on the chapter about Object-Oriented Programming.
The first edition from 2015 has a web representation here, with...
Should I use SVN or Git? [closed]
...w it does it) are implementation details. It's like the difference between CRC and SHA1, fundamentally very different but they do the same thing.
– Erik Funkenbusch
Jul 4 '13 at 1:58
...
Quickly find whether a value is present in a C array?
...nt to a bitwise mask of low bits (AND operation). Example hash functions:
CRC of input bytes, modulo n.
((x << i) ^ (x >> j) ^ (x << k) ^ ...) % n (picking as many i, j, k, ... as needed, with left or right shifts)
Then you make a fixed table of n entries, where the hash maps the...
Heap vs Binary Search Tree (BST)
...ores / 8 threads, 2.90 GHz base, 8 MB cache), RAM: 2x Samsung M471A2K43BB1-CRC (2x 16GiB, 2400 Mbps), SSD: Samsung MZVLB512HAJQ-000L7 (512GB, 3,000 MB/s)
So clearly:
heap insert time is basically constant.
We can clearly see dynamic array resize points. Since we are averaging every 10k inserts ...