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Questions about software, hardware or network performance. Please use as a supplement for other, more specific tags.

0
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0answers
17 views

How to measure a latency time? [closed]

I would like to measure the performances of my Rpi 3 while a program I made (in Python)is running on it. The program is getting data from the UART and is then supposed to launch a song or an image. ...
0
votes
0answers
12 views

Download throughput of Wifi AP connected to Samsung Phone

I have setup a Raspberry Pi 3 as a Wi-Fi access point following Lewis Cowle's scripts and routed the AP traffic to USB using Stretch Lite. The phone is then connected to the a USB port. The phone is ...
0
votes
0answers
14 views

How to perform a benchmark to know the maximum latency while a script is executed ?

I would like to know the maximum latency when a script runs on the Rpi. The script get the data from a sensor at the frequency of around 10 Hz. This data is supposed to execute a process.I need to ...
2
votes
0answers
28 views

Raspberry PI 3 - Browser, bad performance (Website with HTML5 canvas)

I have encountered a problem while developing a dashboard which is supposed to run on a Raspberry Pi 3. It is a combination of a HTML5 canvas as background to create visuals and some simple elements ...
0
votes
2answers
50 views

.NET CORE 2.1 app added to Linux(ARM) deamon cause CPU high

I'm using RaspberryPi (3B+) Linux ARM IOT board which OS is Debian Stretch 9, and my console application is developed on .NET CORE 2.1. My application is quite simple by just open several TCP ...
2
votes
2answers
113 views

Pi3B+ automatically shutdown while the temperature is less than 65C

I'm using Raspbian Stretch with desktop which published at 2018 JUNE. I'm doing some performance testing with Pi3B+ by running my application, the application is just keep send/write data via TCP/IP ...
0
votes
0answers
129 views

How to improve face detection's performance and image quality using the NoIR camera?

I'm building something similar to a timelapse project where I'd like to be able to continuously detect faces and then align, scale and crop them before saving. I'm interested in having high quality ...
0
votes
2answers
105 views

Increase CPU for raspberry pi 3b+

I am running a Bitcoin Full Node on Raspberry pi 3b+. Blockchain sync is dead slow because of less CPU. Is there a way to add additional CPU to a pi board. or connecting additional pi to the same Hard ...
0
votes
1answer
25 views

Raspberry Pi dnsmasq performance

I want to block ads in my whole network with dnsmasq running on a Raspberry Pi, connected via Ethernet to the router. Is there any reason to take a RPi3? Or is a RPi2 also sufficient for that task?
0
votes
0answers
60 views

What could I do to optimize rendering time of image with tkinter?

I've been working on a project using Python 2.7 and TKinter which needs to render 25 images per second based on GPIO inputs. I have working code on my Ubuntu laptop, which is able to render an image ...
1
vote
1answer
96 views

Embed UI App in Windows IoT

I developed a foreground app (UI app) for RPI3 on windows IoT core (version 1709: Fall creators update). also I made my app as start-up app. I want to access the app immediately after turning the ...
0
votes
1answer
353 views

Data transfer of UART over USB too slow

TL;DR : The PI was not the issue. The sender was. Take a look into my answer. long story I am facing a performance issue right now on a test setup i use to investigate limitations for my upcoming ...
3
votes
2answers
102 views

CPU speed changes by a multiply of 2 for short durations

I'm using a raspberry pi and I need really fast performance from my CPU for a certain process. To achieve that, I added isolcpus=3 to my kernel boot parameters, to isolate the core for this process ...
0
votes
1answer
202 views

RPi Cluster for Materials Research

I'm Materials Science student interested in using an RPi cluster for calculations of materials properties. I'm very new to HPC but what I know about the RPI is that its processor is based on the ARM ...
0
votes
1answer
227 views

Interfacing pygame with dispmanx - performance

I'm working on a graphical application, made for console mode, and facing some performance issues when working with large resolution (1920px wide here). One part of the display, a video background, ...
1
vote
1answer
321 views

Raspberry-Pi vs Router as a home data server

I'm planning to build a home server, just to setup a file sharing (hooked up to an external HDD) and a torrent daemon. Between a Raspberry Pi and an older Tp-Link WR1043ND Router, which would have ...
3
votes
0answers
26 views

Can I use Rasp Pi 3 to detect objects from live streaming videos?

I am doing a project on UAV(Unmanned Autonomous Vehicle) for which I need to detect objects from live streaming videos. Can Raspberry Pi 3 satisfy my needs? Also how is Nvidia Jetson compared to Pi 3? ...
0
votes
0answers
214 views

How much of a load can an RPi apache server handle?

I'm setting up a website/web app using PHP and MySQL and have been looking at using RPi's as home servers for the project. A few things got me interested - the simplicity of installing Apache, the ...
3
votes
0answers
86 views

Can a Raspberry Pi 3 play videos from Ustream?

I am thinking about purchasing a Raspberry Pi 3 to stream video from Ustream in a web browser. Is a Pi 3 running Raspbian capable of doing this without choppy video? Does it have the necessary codecs? ...
1
vote
0answers
47 views

Diagnosing Pi slowness?

How do you diagnose slow computing time issues on the Pi? I have Ubuntu 16.04 installed on a Raspberry Pi 3. All Ubuntu package updates are installed, and I've installed the most recent Pi firmware. ...
1
vote
1answer
111 views

Very Low Wi-Fi Performance

I've got a problem, i realized that my Wi-Fi connection on RaspberryPI 3 its very slow (that's not normal) I installed speedtest-cli to test speed of internet. And this is the result: Download: ...
2
votes
1answer
2k views

Raspberry pi 3 over all slow performance [closed]

I am a Raspberry pi enthusiast and novice in this space. I recently bought my first Raspberry pi 3 with 32 GB SD Card and 1 GB RAM. I find over all it is very slow. My atom (android) is much faster ...
0
votes
1answer
464 views

Raspberry Pi Reverse Proxy Performance

I currently have a Nextcloud server on a Raspberry Pi 3, which works perfectly fine. In addition I want to setup my Raspberry 2 as a Gitlab Server. I also have an unused Raspberry Pi 1 Model B+, ...
1
vote
2answers
58 views

What motor controller to use for this setup?

I'd like to run two unipolar stepper motors at 6V 1.2A each and two geared dc motors at 9W 1.2A each simultaneously on the same motor controller. What options are there for this particular setup, and ...
0
votes
0answers
54 views

Hardware platform for building a simple always-on pc

I am considering building a simple Kiosk PC (no keyboard or mouse, only touchscreen). I have a spare 22" touchscreen with HDMI, DVI and VGA outputs and a USB output for touchscreen. I want to use ...
0
votes
1answer
138 views

Perfornance communicating through local loopback

I have a Client/Server application where the Server runs on one rpi and communicates with a client running on another rpi. They communicate using Tcp Sockets. I'm going to do a spin-off application ...
0
votes
1answer
382 views

Is there a way to log CPU load?

I need to examine how my CPU is performing. I could simply open the task manager, but I will have to sit in front of the monitor long time. My problem is that CPU seems to be spiking or overloading ...
0
votes
1answer
462 views

Latency for Raspberry Pi installed on USB drive

I recently bought a Raspberry Pi 3 model B (the last release of the Raspberry foundation), and after reading a lot of articles on the Web for SD card vs USB performances, I decided to move all the ...
0
votes
1answer
506 views

Object detection by color [closed]

I just started planning a project including the raspberry pi . I have experience in programming but never used a pi before. In my project I want to do object detection by color. I need to classify the ...
4
votes
2answers
224 views

Switching from 128 to 512GB USB storage drive makes computer unusably slow

I run Bitcoin on my raspberry pi 3. I have been storing the blockchain on a 128 GB USB SSD drive: https://www.amazon.com/MyDigitalSSD-SuperSpeed-Portable-External-Storage/dp/B00N0V4JG2 The ...
1
vote
1answer
275 views

Is it a good choice to implement IoT Server using Raspberry Pi 3 [closed]

For Arduino (MQTT Client): Light Sensor, Light, etc. For Raspberry Pi 3: Node.js server (with AngularJS front end), MQTT Broker, MongoDB Will the Raspberry Pi 3 Overload? or use Raspberry Pi 3 as ...
0
votes
0answers
592 views

How to Tell if Too Many Threads Are Crashing My Multithreaded Python Program?

How can I tell if my multithreaded Python program is crashing on my Pi 3 because there are too many threads? (Or poorly written ones?) My multithreaded program involves three looping threads: a main ...
1
vote
0answers
148 views

Abmysal NFS read performance RPi2

Im having a hard time pinpointing why my RPi2 have such a terrible NFS read performance. Background: Using openelec or Libreelec i cannot read large BD-rips file structures without having heavy ...
0
votes
1answer
619 views

regarding how to measure memory usage on raspberry pi for a specific program [closed]

I am beginner and I am looking for some help for measuring how much memory a specific program is taking to complete its execution? Is there any article or built in functions I need to start with.
2
votes
1answer
1k views

What is the performance and the performance per watt of Raspberry Pi 3 in GFLOPS

What is the performance of Raspberry Pi 3 in GFLOPS if the CPU is running at 100% and that the GPU is not running at all?
3
votes
2answers
2k views

How much connection speed can I except using Pi 3 in this setup?

I bought the following product to get good internet in my room: AWUS036ACH 802.11ac AC1200 Wide Range USB 3.0 Wireless Adapter with External Antenna I'm planning to buy a Pi 3 to use this wireless ...
1
vote
0answers
456 views

Optimization of picamera frame decoding for opencv processing

I am useing next code for frame capture: from picamera import PiCamera import utils res = (1600,1600) camera = PiCamera(resolution = res) camera.resolution = res camera.raw_format = 'rgb' camera....
0
votes
0answers
345 views

RPI3 web browser performance comparing to tablet

I have been using RPI3 to browse web using midori/firefox/epiphany but performance of those browsers is terrible. On the other hand I have been using tablet with Google Chrome as a web browser. This ...
3
votes
3answers
1k views

Comparison of terminal (non-gui) performance for Raspberry Pi 3 Model B on different Linux OS distros

From the range of OSs available for Raspberry Pi, I would like to know whether the distro impacts the performance of the OS in pure terminal mode. I plan to run computationally power consuming ...
5
votes
6answers
994 views

Ethernet speed / scp

I'm just copying a bunch of files from a RaspPi 3 to my laptop using scp over an Ethernet connection. The speed is abysmal, around 0.5 to 0.6 MB/sec. Is this normal? I read somewhere that with 10/100 ...
3
votes
1answer
904 views

Why is my simple HTML Canvas rendering only 11fps in Chromium a Pi3?

I've written some simple HTML games for my kids on the Pi. The latest one uses a Canvas but the performance is terrible (and I get the yellow "running hot" square). I measured by code running in my ...
0
votes
3answers
2k views

Is there a way to improve the performance of my Raspberry Pi B+ model

When I was looking at improving performance of my raspnerry Pi I found a comment "you dont have to have a swap , and if your doing heavy stuff which needs swap you can always add a HD via the USB -" ...
1
vote
1answer
2k views

Does being undervoltage decreases the Pi's performance?

I recently blew up the 5V 2A PSU that came with my Pi. Since then, I am using my phone's charger, 5v 1A to run my Pi. And while it runs fine most of the time, I see the undervoltage warning, while it ...
3
votes
2answers
3k views

Getting extremely low fps on Rpi 3 while image processing

I am working on a project that requires image processing to detect a traffic light and take action based on its status (on or off). I initially developed the code on my PC, using OpenCV and Python, it ...
4
votes
3answers
11k views

The Hashrate of the Raspberry Pi 2 and 3

I've been searching for a definitive answer to the above question, but somehow only seem to find semi-true statements (according to replies to these statements), or very outdated answers (for example ...
2
votes
1answer
2k views

Does have Raspberry Pi enough performance for Computer vision process in c++

I will write a computer vision application in C++. I need to choose a hardware platform. I cannot use a PC (laptop, desktop, etc). I will process a video that I take a camera. Can I use a Raspberry ...
0
votes
2answers
215 views

Driving 32x32 LED grid via GPIO preventing other processes from running

I have a project running a 32x32 LED grid based on these instructions: https://learn.adafruit.com/adafruit-rgb-matrix-plus-real-time-clock-hat-for-raspberry-pi/driving-matrices which relies on these ...
3
votes
1answer
1k views

Only 2.5 MB/s transfer rate on WiFi

I have a raspberry pi that I use as a router, the configuration is basically as follows : Raspberry Pi Zero with raspbian (latest 4.4 kernel) USB 3.0 HUB with 4 ports connected to the main micro USB ...
1
vote
2answers
1k views

Performance with an encrypted disk

Is Raspberry Pi (model B, rev. 2) suitable for a home file server with external disks encrypted with LUKS? In particular, is the de/encryption throughput reasonable? I used to have such a disk in a ...
0
votes
0answers
2k views

Seafile 5 vs. Owncloud 8

I've currently installed Seafile 5.0.3 on my Raspberry Pi (V1 B+). I'm considering to replace Seafile with Owncloud (current Version 8.2.2) because it looks much nicer (more flat design) than Seafile,...