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Category: Performance

Whether you are a system designer, developer or tester, to build a high-performance system, you need to understand the following concepts: 1. Response time is the time for the system to respond to user requests, and response time is the user’s most intuitive experience of system performance. Therefore, the performance of the system is directly expressed. 2. Concurrent users, within a certain time frame, the largest number of simultaneous online users, that is, the number of peak online users 3. System throughput refers to the number of requests processed by the system within a unit time 4. Think Time, From a business perspective, this time refers to the time interval between each request when the user performs an operation. In order to simulate this time interval during performance testing, the concept of thinking time is introduced to more realistically simulate the user’s operate. In the formula of throughput, F=VU * R / T shows that throughput F is a function of the number of VUs, the number of requests issued by each user R, and time T, and R can be calculated by time T and user thinking time TS Calculation: R = T / TS

XPAGES – Is SSJS performance loss when using @functions?

If I want to parse text fields in SSJS, there are two main tools. Built-in JavaScript code and newly converted @Functions. Is @Functions slower than using pure javascript? Or is there no real diffe

October 2, 2021By Simo Performance SSJS, whetherLeave a Comment

Angle performance: Components use 500 (sub) members public objects

I am using Angular 4 with Typescript.

I have a static class with many public static/constant string members whose value will never be Change. Many of my components expose this class to access

October 2, 2021By Simo Performance Angle, Child, Component, Member, object, open, performance, public, usageLeave a Comment

Performance MongoDB Java driver

I use the mongodb java driver in my project to perform queries (find, aggregate, mapreduce,…) in a large collection (5 million documents) The driver version is:

org.mongodb< /groupId>
mon

October 2, 2021By Simo Performance Drive, Java, MongoDB, performanceLeave a Comment

Performance – Import Large Matrix: Which import is imported or pressed? – Matlab

General programming issues, but Matlab may have specific considerations.

I will import very large data files. Import the entire file into memory and then Is it better practice/faster/more eff

October 2, 2021By Simo Performance all, Column, import, large, Matlab, Matrix, or Press, performanceLeave a Comment

Performance – Why `pickle.dump” chickle.Load`ipc is so slow, is there a quick substitute?

I am using python subprocess for IPC. Now, let us assume that I have to use subprocess.Popen to spawn other processes, so I cannot use multiprocessing.Pipe for communication. First, I thought Is to

October 2, 2021By Simo Performance alternative, Chickle, Chickle.Load, dump, FAST, IPC, load, performance, Pickle, Pickle.dump, presence, slow, whether, whyLeave a Comment

Performance – slow tail recursive in F #

I have an F# function that returns a list of numbers starting from 0 in the mode of skipping n, select n, skip n, select n…the limit is reached. For example, enter 2 This function will return [2,

October 2, 2021By Simo Performance Medium, performance, recursion, slow, tailLeave a Comment

Performance – When I use a thread, why will my Perl script slowly decompress the file?

So I run perl 5.10 on core 2 duo macbook pro compiled with thread support: usethreads = define, useithreads = define. I have a simple script to read 4 gzip files , Each file contains 750,000 lines.

October 2, 2021By Simo Performance decompression, file, my, Perform, perl, Script, slow, thread, time, use, why, willLeave a Comment

Performance – How to stop the bad robots from my website without interfering with real users?

I want to keep some bad scrapers (that is, bad robots that ignore robots.txt through definition) to steal content and consume the bandwidth of my website. At the same time, I don’t want to interfer

October 2, 2021By Simo Performance BAD, block, how to interfere, in situ, performance, real, robot, Self, user, WebsiteLeave a Comment

Performance “Home Brew” STL?

http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2271.html

According to that Article, STL is not suitable for game development.
What is your opinion on this?

My current approach

October 2, 2021By Simo Performance brewing, HOME, performance, STLLeave a Comment

Unity performance optimization – occlusion

1. The meaning of Occlusion Culling-Occlusion Culling: Game objects that are not in Camear’s field of view are not rendered Render (by default, Unity will render all GameObjects, regardless of whet

October 2, 2021By Simo Performance elimination, occlusion, Optimization, performance, unityLeave a Comment

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