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Http长连接200万尝试及调优 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...Network: eth0 (bnx2):Broadcom NetXtreme II BCM5709 Gigabit Ethernet,1000Mb/s
OS: RHEL Server 5.4 (Tikanga), Linux 2.6.18-164.el5 x86_64, 64-bit
服务端程序很简单，基于nginx写的一个comet模块，该模块接受用户的请求，然后保持用户的连接，...
How do you add a Dictionary of items into another Dictionary
...
100
In Swift 4, one should use merging(_:uniquingKeysWith:):
Example:
let dictA = ["x" : 1, "y...
Convert SVG to image (JPEG, PNG, etc.) in the browser
..." height="200"
xmlns="http://www.w3.org/2000/svg">
<rect width="100%" height="100%" fill="red" />
<circle cx="150" cy="100" r="80" fill="green" />
<text x="150" y="125" font-size="60" text-anchor="middle" fill="white">SVG</text></svg>`
svgToPng(svg,(img...
Pure JavaScript Send POST Data Without a Form
...L_SOCKET, socket.SO_REUSEADDR, 1)
sock.bind(addr)
sock.listen(5)
# Launch 100 listener threads.
class Thread(threading.Thread):
def __init__(self, i):
threading.Thread.__init__(self)
self.i = i
self.daemon = True
self.start()
def run(self):
httpd = Ba...
Check if a Windows service exists and delete in PowerShell
...ause it doesn't throw an error. I was very wrong. Running each in a loop 100 times, Get-Service took 0.16 seconds while Get-WmiObject took 9.66 seconds. So Get-Service is 60x faster than Get-WmiObject.
– Simon Tewsi
Mar 27 '17 at 2:01
...
Git: Cannot see new remote branch
...eads/release/1.0
d80c1a52012985cec2f191a660341d8b7dd91deb refs/tags/v1.0
The new branch 'release/1.0.5' appears in the output.
2. Force fetching a remote branch:
git fetch origin <name_branch>:<name_branch>
$ git fetch origin release/1.0.5:release/1.0.5
remote: Enumerating o...
print call stack in C or C++
...il call optimization?
Benchmark run on -O3:
time ./boost_stacktrace.out 1000 >/dev/null
Output:
real 0m43.573s
user 0m30.799s
sys 0m13.665s
So as expected, we see that this method is extremely slow likely to to external calls to addr2line, and is only going to be feasible if a l...
HashSet versus Dictionary w.r.t searching time to find if an item exists
...
HashSet vs List vs Dictionary performance test, taken from here.
Add 1000000 objects (without checking duplicates)
Contains check for half the objects of a collection of 10000
Remove half the objects of a collection of 10000
...
How do you round a float to two decimal places in jruby
...t;/th>
If you want to truncate to 2 decimals, you should use Integr(a*100)*0.01
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How do I POST urlencoded form data with $http without jQuery?
...
}).then(function () {});
UPDATE
To use new services added with AngularJS V1.4, see
URL-encoding variables using only AngularJS services
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