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Questions tagged [chaos]

Anything related to chaotic systems or chaos theory. Chaotic systems are systems that are extremely sensitive to initial conditions (e.g. round-off error in data stored digitally) thus leading to the impossibility of predicting their long-term evolution. The tag is mostly relevant to cases where algorithms show chaotic behavior.

Anything related to chaotic systems or chaos theory. Chaotic systems are systems that are extremely sensitive to initial conditions (e.g. round-off error in data stored digitally) thus leading to the impossibility of predicting their long-term evolution. The tag is mostly relevant to cases where algorithms show chaotic behavior.

See Wikipedia page on chaos theory.

102 questions
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Chaos monkey testing for Microsoft Orleans cluster

I’m looking for some guidance that will help to design a “chaos monkey” testing approach for Orleans cluster. I’m new on that, so what I can think is a script that can randomly restart silo’s, stop/move grains, and do other destructive actions.…
Denys Kholod
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chaos game for DNA sequences

I have tried the mathematica code for making the chaos game for DNA sequences posted in this address: http://facstaff.unca.edu/mcmcclur/blog/GeneCGR.html which is like this: genome = Import["c:\data\sequence.fasta", "Sequence"]; genome =…
Layla
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Simple way to delete existing pods from Python

I have end-to-end tests written in pytest, running on a Kubernetes cluster in Namespace foo. Now I want to add simple chaos engineering to the tests to check the resilience of my services. For this, I only need to delete specific pods within foo --…
DaveFar
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Error "cannot allocate memory block of size 67108864 Tb" in the R function false.nearest

The R function tseriesChaos::false.nearest(series, m, d, t, rt=10, eps=sd(series)/10) realizes the false nearest neighbours algorithm to help deciding the optimal embedding dimension. I would like to apply it to the following…
Mark
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RSolve not solving discrete Rossler system

I'm working with chaotic attractors, and testing some continuous-> discrete equivalences. I've made a continuous simulation of the Rossler system this way a = 0.432; b = 2; c = 4; Rossler = { x'[t] == -y[t] - z[t], y'[t] == x[t] + a*y[t], …
Javier Abrego
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Chaotic Pendulum Exhibiting Chaotic Behavior with the Same Initial Conditions

My first post on Stack Overflow, so bear with me. I have built a model of a chaotic double pendulum in python using the pymunk physics library, which in turn uses the chipmunk C library. The pendulum, being chaotic, displays extreme sensitivity to…
TheRuler
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Chaos engineering best practice

I studied the principles of chaos, and looks for some opensource project, such as chaosblade which is open sourced by Alibaba, and mangle, by vmware. These tools are both fault injection tools, and do nothing to analysis on the tested…
NingLee
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Orbit Diagrams with DynamicalSystems Initial Condition not Working

I am trying to using the DynamicalSystems julia package to plot an orbit diagram of a discrete dynamical system governed by the following equation: y_{n+1} = 1- by_n^2 I'm able to get it to plot however I can't seem to get the initial condition to…
Cavenfish
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Reaction-diffusion parallel growing method

I've created many types of reaction-diffusion patterns using different parameters for death and feed rates etc. Working with them on Ready by GollyGang (a simple C++ software that can grow the patterns based on parameters and code) However, they all…
ofer dofer
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Why are these Random Numbers slowly gravitating towards a negative value?

The program is supposed to do the following: Initializes a grid of values, "ActualGridValues", (X rows by Y columns) equal to 0. Creates another grid of values, "RandomGridValues", (X rows by Y columns), defines each cell in the grid as equal to…
user2161457
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Sources of Entropy on the Web

In order to guarantee honesty of a random number generator, the idea is that users can, if they wish, verify that the number is, in fact, generated from public sources of entropy. This enables the system to ensure it's users that the random number…
Jordan Arsenault
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Restart VMs in scale set in AKS Node Pool

I have a kubernetes cluster with node pools and as a part of Chaos Engineering Initiative,I need to restart the VM. Is there any code for the same using azure resource graph?
Batman22
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Chaos Monkey operability with Kubernetes?

Does anyone have experience using Chaos Monkey with Kubernetes? Curious as to how Chaos Monkey is setup, the outputs, reports, etc. Thanks in advance!
Scott Walker
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Chaos Monkey delay test causes tomcat-jdbc connection pool to have huge delay in getting connection

We are running delay test using Chaos Monkey on our service. We introduce 2 second delay using it. During this time the response time of our service goes down to 35-40 seconds also. When we profiled our application, we found that the maximum amount…
Kumar
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Drawing Poincare Section using Python

I was about to plot a Poincare section of the following DE, which is quite meaningful to have a periodic potential function V(x) = - cos(x) in this equation. After calculating the solution using RK4 with time interval dt = 0.001, the one that…
ToBY
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