Questions tagged [performance]
Questions about software, hardware or network performance. Please use as a supplement for other, more specific tags.
204
questions
0
votes
1
answer
553
views
Strange performance problems
I've been trying out a raspi 3 as a desktop recently, and have run into strange performance problems, particularly when using chrome.
setup:
raspberry pi 3
running raspbian stretch
2.5A power supply
...
- 101
0
votes
0
answers
249
views
"Performance" gorvernor doesn't change cpu frequency
When i tried to change the default governor of my Raspberry Pi 2 (currently at Powersave mode) to Performance mode which is expected to push my Pi's CPU freq up to its maximum number (900Mhz) by using ...
- 1
11
votes
3
answers
7k
views
Lxpanel using 100% CPU (1 core)
On my Raspbian 2018-11-13 installation with all updates (sudo apt-get update and sudo apt-get upgrade), I see the CPU graph in the task bar (top right corner) at constant 25%.
I opened a terminal and ...
- 2,315
-1
votes
1
answer
108
views
Is a Raspberry Pi 3 B+ "usable" enough for our coding/development, entertainment, gaming needs?
I'm planning on buying 2 units. One for myself for the purposes of learning web development, and one for my sister for entertainment purposes.
I know that the latest iteration of the device will ...
- 99
4
votes
1
answer
2k
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 ...
- 41
0
votes
2
answers
559
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 ...
- 121
2
votes
2
answers
1k
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 ...
- 121
0
votes
3
answers
3k
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 ...
- 101
0
votes
1
answer
152
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?
- 153
0
votes
0
answers
2k
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 ...
- 101
1
vote
1
answer
287
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 ...
- 135
1
vote
1
answer
2k
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 ...
- 111
3
votes
2
answers
177
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 ...
- 31
0
votes
1
answer
332
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 ...
- 3
0
votes
1
answer
873
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, ...
- 1,406
1
vote
1
answer
643
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 ...
- 369
3
votes
0
answers
51
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?
...
- 31
3
votes
0
answers
190
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?
...
- 31
1
vote
0
answers
157
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. ...
- 2,221
1
vote
1
answer
176
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: ...
- 13
2
votes
1
answer
8k
views
Pi 3 overall slow performance [closed]
I recently bought my first Pi 3 Model B with a 32GB SD Card. I find overall it is very slow. My Atom (Android) is much faster compared to a Pi.
Do I need to do something for the Pi to perform better? ...
- 21
0
votes
1
answer
2k
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+, ...
- 111
1
vote
2
answers
73
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 ...
- 13
0
votes
0
answers
71
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 ...
- 101
0
votes
1
answer
598
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 ...
- 19
0
votes
1
answer
2k
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 ...
- 1,054
0
votes
1
answer
1k
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
1
answer
2k
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 ...
- 3
4
votes
1
answer
477
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 ...
- 421
1
vote
1
answer
369
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 ...
- 11
1
vote
0
answers
1k
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 ...
- 11
1
vote
0
answers
216
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 ...
- 11
1
vote
1
answer
2k
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
2
answers
3k
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?
- 133
4
votes
2
answers
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 ...
- 161
1
vote
0
answers
779
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....
2
votes
3
answers
3k
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 ...
- 971
5
votes
6
answers
3k
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 ...
- 502
6
votes
1
answer
2k
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 ...
- 251
0
votes
3
answers
4k
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 -"
...
- 848
2
votes
2
answers
5k
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 ...
- 273
3
votes
2
answers
6k
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 ...
- 273
6
votes
3
answers
20k
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 ...
- 204
3
votes
1
answer
3k
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
2
answers
384
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 ...
- 421
3
votes
1
answer
2k
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 ...
- 143
2
votes
2
answers
2k
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 ...
- 181
3
votes
2
answers
1k
views
Raspberry Pi Camera Module slower than Desktop Webcam
I'm using CodeBlock IDE on raspberry pi 2 with raspberry pi camera module to run face detection program (via Haar Cascade). Now I've compared its performance using Microsoft LifeCam (USB connection) ...
- 31
1
vote
0
answers
2k
views
Expected performance of Raspberry Pi as NAS with software RAID-1
What kind of performance can I expect from a Raspberry Pi 2 as a NAS with 2 External hard-drives as a software RAID-1?
I know that the Ethernet runs as a USB device so they all (Ethernet and 2 ...
- 111
2
votes
1
answer
772
views
How to simulate the performance of a RPi in a VM?
I would like to roughly check if the code I plan to run on a RPi stresses it in a reasonable way (CPU, RAM, disk).
I was wondering if there are some "throttled down" Debian VMs which could be used (...
- 535