Questions tagged [performance]
Questions about software, hardware or network performance. Please use as a supplement for other, more specific tags.
175
questions
-1
votes
0answers
53 views
How to run python fast on raspberry Pi
I have a python application running on Raspberry Pi.
Python version: 3.7.3.
The application does heavy run-time calculations and therefore runs very slow on the raspberry pi. The application uses ...
4
votes
1answer
82 views
How is CPU in Raspberry Pi 4 +36% faster than for Raspberry Pi 3?
CPU benchmarks show that the Raspberry Pi 4 outperforms Raspberry Pi 3 by +36%
https://www.geeks3d.com/20190930/raspberry-pi-4-vs-raspberry-pi-3-cpu-and-gpu-benchmarks/
How is this possible given the ...
0
votes
0answers
25 views
Network speed problem on Raspberry Pi 3
Both my desktop (running Windows Subsystem for Linux) and raspberry pi 3 connect to router via WiFi.
Download speed from internet on desktop is decent :
~/tmp$ wget https://cdimage.debian.org/debian-...
1
vote
1answer
82 views
Does this flat plate even work for cooling?
I bought a raspberry pi 4 case, and it came with these plates you see in the picture + a fan. From the sizes, I guess the flat plat is for the CPU. I kind of find it hard to believe that this works at ...
1
vote
0answers
27 views
How to power RPi with fan from single source?
Electronics beginner here. I have Raspberry Pi 4 GB variant. I have the following power requirements:
power a 5V cooling fan 12V cooling fan (a spare cooler master)thanks @Milliways
safely (i.e. ...
3
votes
1answer
214 views
External SSD-Drive very slow when using mounted encrypted container
I have a Raspberry Pi4 (4GB) with a 250GB SSD connected via USB3.
The SSD has a write speed of about 70MB/s, which is very nice.
The SSD is mounted via fstab and the following settings:
LABEL=DATA /...
0
votes
0answers
30 views
Why does raspistill take 10× more real time than the shutter time I set?
I've installed the camera module v2.1, and now I'm trying to make long-exposure photos with it. I seem to get correct results, i.e. the image is bright enough corresponding to the large exposure time, ...
1
vote
0answers
176 views
UV4L huge CPU load on streaming audio
I'm building a little baby monitor using RaspberryPi ZeroW and UV4L and run into a little problem. I'm using WebRTC to cast video and audio to my browser from RPI camera (used facedetect demo, ...
0
votes
1answer
97 views
Raspberry Pi 4 Low Voltage performance
I am looking what exactly happens when a Raspberry Pi 4 is powered with low voltage. I am not looking whether this will hurt the Raspberry (as this has been asked before) or how to fix this.
I ...
1
vote
1answer
27 views
Raspberry pi 3 A+ [closed]
The Raspberry Pi 3 A+ ,I think is memory-constrained,in that Chromium does not work well. I wanted to code Scratch 3 on it as Scratch 2 is only available offline. Using the web seems off limits and so ...
1
vote
0answers
193 views
Why does Pi 3 have better WebGL than Pi 4?
Based on https://webglsamples.org/fishtank/fishtank.html
Pi 3B, Raspbian Buster, GL driver on, Chromium reports 18 FPS.
Pi 4B4, Raspbian Buster, GL driver on, Chromium reports 12 FPS.
Any idea why ...
0
votes
0answers
69 views
Raspberry pi 3 B+ Disk IO Bottleneck
I have a RP3 with several docker containers (11) running at home, some for network purposes, other for IoT. The thing is, I've notice several issues related to disk IO, specially when performing unzip ...
0
votes
0answers
78 views
How fast is ffmpeg in converting .mkv files to hls format on the Raspberry pi 4?
For my current project, I need to convert Mkv files to hls using ffmpeg on my Rasberry pi 3b+, but the speed is of course relatively slow (The speed is 0,25x to 0,3x or around 6.0 - 6.9 fps).
The ...
1
vote
1answer
354 views
Performance of Raspberry Pi 4 in luks?
I found previous version was quite slow (3MB/s), but this newer Pi has more power.
What speeds can I expect with external hdd and standard installation of luks (I believe aes 256, xts, plain 64)?
1
vote
1answer
75 views
How many blocks can a RPi 2B load per day as a Bitcoin full node?
My Raspi 2B is running a full node over a >20MBit/s internet provider (I subtracted another) and it seems that it only loads about 6 blocks a day which would amount to about 1GB per day.
Is it ...
5
votes
1answer
712 views
What sort of throughput is achievabe over the USB 3.0 port on the Pi-4?
Looking to run a router application on the rPi-4, and was wondering if anyone has experience using usb 3.0 -> gigabit ethernet adapters on it - specifically what adapter/chipset worked with what ...
2
votes
1answer
63 views
Unusably slow performance on Model B Revision 2.0 using latest Raspbian kernel - advice?
I finally decided to try out a RBP that was given to me years ago. It's a Pi 1 Model B Revision 2.0 (PCB 2011.12). I installed and set up the latest Raspian kernel using NOOBS, no problem.
However, ...
3
votes
2answers
281 views
Cost-effectiveness of Pi cluster
Does it make sense to use Pi cluster for real computation?
My use case is to carry out intensive computation tasks 24/7. The tasks are pleasantly parallel, and there will be minimum inter-node ...
0
votes
0answers
39 views
will it Pi? headless home server(s)
I want to run the following:
Transmission
Sickrage
Plex (no transcoding)
Openvpn (client)
Now for the multiple choice section. Raise your hand to vote:
Each in a separate Docker container on a ...
2
votes
2answers
212 views
Would ZRAM be helpful for running OpenCV?
I'm doing some OpenCV development on a Raspberry Pi 3, and I have found some information about using ZRAM on the Pi to try and boost its processing effectiveness. I know this isn't actually adding ...
0
votes
1answer
513 views
Raspberry Pi 3 Model B+ vs Odroid C2 huge performance difference
So i benchmarked my Raspi 3 B+ and an Odroid C2 with sysbench by in single and multithread operation by using
sysbench --test=cpu --cpu-max-prime=20000 --num-threads=4 run
The results are kinda ...
0
votes
1answer
160 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
...
0
votes
0answers
104 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 ...
6
votes
1answer
1k 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 ...
0
votes
1answer
73 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 ...
4
votes
1answer
1k 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
415 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
740 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
3answers
1k 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
72 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
940 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
277 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
1k 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
140 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
298 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
622 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
535 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
39 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?
...
3
votes
0answers
154 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
89 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
138 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
4k 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
883 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
63 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
64 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
342 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
1k 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
921 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
1k 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
335 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 ...
