Questions tagged [performance]

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

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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 ...
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38 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 ...
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1answer
52 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)?
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55 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 ...
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1answer
117 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 ...
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1answer
35 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, ...
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1answer
93 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 ...
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32 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 ...
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2answers
135 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 ...
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1answer
406 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 ...
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1answer
86 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 ...
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68 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 ...
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1answer
458 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 ...
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1answer
59 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 ...
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1answer
817 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 ...
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2answers
356 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 ...
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2answers
511 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 ...
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3answers
933 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 ...
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1answer
62 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?
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601 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 ...
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1answer
268 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 ...
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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 ...
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2answers
137 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 ...
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1answer
278 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 ...
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1answer
497 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, ...
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1answer
485 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 ...
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37 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? ...
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142 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? ...
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69 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. ...
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1answer
131 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: ...
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1answer
3k 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 ...
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1answer
713 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+, ...
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2answers
62 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 ...
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62 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 ...
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1answer
286 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 ...
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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 ...
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1answer
775 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 ...
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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 ...
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2answers
313 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 ...
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1answer
336 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 ...
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0answers
940 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 ...
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192 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 ...
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1answer
1k 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.
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2answers
2k 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?
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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 ...
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0answers
601 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....
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3answers
2k 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 ...
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6answers
2k 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 ...
4
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1answer
1k 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 ...
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3answers
3k 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 -" ...