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TCP 的那些事儿（下） - 更多技术 - 清泛网 - 专注C/C++及内核技术
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sshthresh = cwnd /2
cwnd 重置为 1
进入慢启动过程
2）Fast Retransmit算法，也就是在收到3个duplicate ACK时就开启重传，而不用等到RTO超时。
TCP Tahoe的实现和RTO超时一样。
TCP Reno的实现是：
cwnd = cwnd /2
sshthresh = cw...
Image comparison - fast algorithm
...he second method uses only elementary image processing, and is potentially faster than the first approach, and is straightforward to implement. However, what it gains in understandability, it lacks in robustness -- matching fails on scaled, rotated, or discolored images.
The third method is both fa...
Comparison of Android networking libraries: OkHTTP, Retrofit, and Volley [closed]
...e box (using Spring Android or Google Http Client or Retrofit).if you want fast networking and imageloading with robust network client you can go for volley! but you can replace normal android async task you use Robospice for better performance and avoiding memory leaks!
– LO...
Add Variables to Tuple
... 0 LOAD_CONST 1 (('foo', 'bar'))
2 STORE_FAST 0 (tuple1)
3 4 LOAD_FAST 0 (tuple1)
6 LOAD_CONST 3 (('baz',))
8 BUILD_TUPLE_UNPACK 2
10 STORE_FAST 1 (t...
Fastest way to serialize and deserialize .NET objects
I'm looking for the fastest way to serialize and deserialize .NET objects. Here is what I have so far:
9 Answers
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What is the difference between `git merge` and `git merge --no-ff`?
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The --no-ff flag prevents git merge from executing a "fast-forward" if it detects that your current HEAD is an ancestor of the commit you're trying to merge. A fast-forward is when, instead of constructing a merge commit, git just moves your branch pointer to point at the incomi...
Recursive sub folder search and return files in a list python
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@user136036, "better" does not always mean fastest. Sometimes readability and maintainability are also important.
– John La Rooy
Jan 21 at 0:55
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Is GridFS fast and reliable enough for production?
...per day). The server hasn't much ram, 2gigs, and even the cpu isn't really fast (Core 2 duo 1.8Ghz) but the server has plenty storage space : 10Tb (sata) in raid 0 configuration. The job the server is doing is very simple:
Each product on our price-comparer has an image (there are around 10 million...
Why does Python code run faster in a function?
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You might ask why it is faster to store local variables than globals. This is a CPython implementation detail.
Remember that CPython is compiled to bytecode, which the interpreter runs. When a function is compiled, the local variables are stored in...
Numpy: find first index of value fast
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Fast forward to 2018, the issue does not seem to have moved an inch.
– P-Gn
May 18 '18 at 11:40
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