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deciding among subprocess, multiprocessing, and thread in Python?
...o threading while allowing CPython to scale your processing among multiple CPUs/cores despite the GIL (Global Interpreter Lock). It leverages all the fine-grained SMP locking and coherency effort that was done by developers of your OS kernel.
The threading option:
threading is for a fairly narrow r...
What is the performance of Objects/Arrays in JavaScript? (specifically for Google V8)
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While running under node.js 0.10 (built on v8) I was seeing CPU usage that seemed excessive for the workload. I traced one performance problem to a function that was checking for the existence of a string in an array. So I ran some tests.
loaded 90,822 hosts
loading config took 0.08...
Best practices for circular shift (rotate) operations in C++
...shld edi,edi,7 which is slower and takes more bytes than rol edi,7 on some CPUs (especially AMD, but also some Intel), when BMI2 isn't available for rorx eax,edi,25 to save a MOV.
MSVC: x86-64 CL19: Only recognized for constant-count rotates. (The wikipedia idiom is recognized, but the branch and A...
Quickly find whether a value is present in a C array?
... this doesn't take into account memory delays.
Theory of operation: ARM's CPU design executes most instructions in one clock cycle, but the instructions are executed in a pipeline. C compilers will try to eliminate the pipeline delays by interleaving other instructions in between. When presented wi...
What is the meaning and difference between subject, user and principal?
...r's intent to a reader. When programming we have the luxury/curse that the CPU will interpret our instructions in only one way and we are forced to use it's level of precision. But in human language we need nuance and precision to convey meaning efficiently.
– T.Rob
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Java GUI frameworks. What to choose? Swing, SWT, AWT, SwingX, JGoodies, JavaFX, Apache Pivot? [close
...Pivot demo "Kitchen sink", after opening some groups it keeps eating whole CPU. If it's because of Pivot design, then I definitely don't want it in my projects.
– Display Name
Jun 20 '13 at 21:11
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What's the use of Jade or Handlebars when writing AngularJs apps
...l. Mentally parsing a JADE template vs. raw HTML requires equal 'wetware' cpu time for me. I won't go so far as to say you're unprofessional if you disagree, but to me it's the same thing. @ Philipp, your analogy of parsing C/C++ to assembly being equal to parsing JADE to HTML is poor, there are ...
Comparison of Android networking libraries: OkHTTP, Retrofit, and Volley [closed]
...ess your data using ByteString and Buffer to do some clever things to save CPU and memory. (FYI: This reminds me of the Koush's OIN library with NIO support!)
We can use Retrofit together with RxJava to combine and chain REST calls using rxObservables to avoid ugly callback chains (to avoid callback...
How to measure time in milliseconds using ANSI C?
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Doesn't this measure cpu time and not wall time?
– krs013
Feb 1 '15 at 4:53
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Node.js vs .Net performance
...be the callback from a http rest request you made. Node tries to maximize CPU efficiency by eliminating thread context switches. Because node made this opinionated choice that ALL I/O is asynchronous, that also means that all it's frameworks/add-ons support this choice. It's easier to write apps t...