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Questions tagged [preemptive]

Preemptive Scheduling of processes may occur due to a variety of reasons :

  1. The process requires more time than the time quantum assigned to it
  2. A process of a higher priority has entered the queue
  3. A process has less next-CPU-burst time then the one being executed.

In either of the cases, a context switch will occur. The context of the switched process will be saved and that of the new process will be loaded.

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Using Constraint Programming to model preemptive task with energy allocation over periods

I have a linear model that works fine but has a huge amount of time of resolution that I want to reduce. One approach is that I convert it to constraint programming. Supposing that I have a specific task that requires 5 hours of working. For…
Ali Fradi
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Postlogs Solr with Basic Authentification

I use the Solr version 9.1.0. And I try to use the Postlogs tool. My command that I run in the Solr folder is bin/postlogs https://admin:my-password@myurl/solr/collection /path-to-logs/ The Postlogs tool works fine without authentification. But if…
Elena
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Apache httpclient 4.5.13 preemptive authentication or not

I came across this code, which I am trying to refactor the deprecated usage of DefaultHttpClient to use HttpClientBuilder and trying to replicate the authentication part. In HttpClientBuilder world I could use preemptive…
radio
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gcp vm workers default gateway

I am using GCP preemptible VMs for my workers. However, GCP limits the in-use addresses to 8. I requested for increase, but they rejected it. I tried to use their NAT, but it seems to be a 1:1 NAT. I was under the impression that NATs allow many…
Gary Leong
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Would preemptive scheduling affects speed of moving file?

Suppose I move file from Drive C to D. If I set the environment such OS will schedule processes as preemptive scheduling, would it be affect the speed of moving file? I have heard that moving file is held in kernel, and while kernel(=OS) is still a…
jadon
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What kind of procedure is used to calculate the thread

there is a thread in the following task. How can I see whether Round Robin, FIFO or Preemptive Scheduling was used there? void High_Thread(void const *argument) { while(1) { GPIOE->DOUT_BYTE1=0xFF; } } void…
oeztuerk_42
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Shortest remaining time Job first scheduling algorithm clarification

I was going through the various scheduling algorithm and came across the shortest remaining time Job fist algorithm. What I understand: Shortest remaining time job first algorithm is the preemptive version of the shortest time job algorithm. Here…
Savannah Madison
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How to apply the algorithm of preemptive shortest job first in C

I am trying to implement different OS scheduling algorithms in C. I have already implemented FCFS and non-preemptive shortest job first scheduling, however, I am having a hard time with regards to the loop that will occur for the preemptive SJF.…
Jean Philip Juachon
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Which state change occurs as a result of non preemptive action

The question I am looking to solve is : Which state change occurs as a result of non preemptive action From WAIT to READY From READY to RUNNING From RUNNING to READY From RUNNING to WAIT As per my understanding as its a non preemptive action. So…
nisha aunty
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Simulate preemptive scheduling mechanisms in C#

I have reserched and I realised that actually there is no way to make preemptive scheduling mechanisms in C#, am I right? So, I have to simulate it by using cooperative scheduling mechanisms. Actually I have to make API, so my idea is to use some…
ProgNow
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Can Google Cloud Platform preemptive instances be re-started automaticaly?

I beleived that Google Cloud Platform preemptive instances were restarted automaticaly when the engine releases the ressource but I was wrong. Once preempted the instance seems to need a manual restart. Is there a way to restart the instance…
Sébastien P
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Is there any scheduling technique in Android?

I am a high school student who is curious about how stuffs in the technology world works. I've read a book about Android operating system, borrowed from my aunt months ago. And I've been wondering, is there any scheduling technique in Android? I am…
Pineapple On Pizza
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Linux Preemptive kernel implications?

What are the implications of a linux kernel being preemptive, particularly for creating device drivers. I'm guessing you need to be more diligent about resource locking, but is there anything more to this?
user623879
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fully preemptive kernel and process stuck in D state

This is more of a theoretical question as I'm trying to understand how the kernel scheduler works (but also I've been having hung_task issues while mid-priority RT tasks are running - and also there are swapper processes in the CPU dumps). I am…
samuzu.pazael
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force linux kernel to run code without preempting

I'm writing a Linux kernel(android Linux kernel) module. I have a general question . is it possible to force kernel run a part of code in non-preemptive mode?
fjahan
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