Questions tagged [performance]

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

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24 views

Overclocking Raspberry Pi after the device has booted

I using a Raspberry-Pi 3B+ device and I am trying to change the maximum frequency after the device has booted. From my understanding, this can be done by editing the files under /sys/devices/system/...
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1answer
33 views

Writing to a NAS from a Raspberry Pi 2B - SMB or NFS?

I'm familiar with Windows but a Linux newbie. I have a Synology NAS which I want to use with my Raspberry Pi 2B (which is running Tvheadend). The NAS supports NFS, SMB and AFP. I want to minimise ...
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28 views

Raspberry PI router

I am using a Raspberry PI 3B with Raspbian OS 10 as a home router/firewall/pihole/dphcd/reverse proxy. I have connected a USB ethernet adapter (eth1) used as WAN interface. The internal NIC (eth0) is ...
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20 views

Performance and Media player OS for old Pi model B

I want to replace my old OSes (RaspBMC and Libreelec8) for Raspberry pi B by a more modern distribution but I also I want to ensure that the performance is not much worse. As modern distributions ...
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0answers
27 views

Mounting partition in fstab slows Pi dramatically

I have a RasperryPi model 2, with a 128 GB disk. The machine was too slow, so I resized the rootfs partition (20 GB) and I created another ext4 partition of 100 GB that I mount to /data. fstab entry ...
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0answers
42 views

Can I record HD 1080 p 60 fps through USB on a Raspberry Pi 3 or 4?

I have a set-top box with HDMI output and want to record some programs from it on a Raspberry Pi (model 3 or 4). I found some HDMI to USB 3.0 converters with HDMI 'loop-out' which would enable us to ...
0
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1answer
44 views

Slow Pi (running pihole) due to large MicroSD with only one partition?

My piholePi seems somewhat slow. It is a Raspberry Pi 2 Model B Rev 1.1, so 4 cores @ 900 mhz. Runs Pi OS Buster Running the Pi OS Lite version Here is the general load, of top -d 10 Sometimes, ...
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70 views

Differences between B0 and C0 steppings of the BCM2711

I just acquired a Raspberry Pi 4 Model B with 4GB RAM. The processor stepping (revision) is B0 (the heat spreader says 2711ZPKFSB06B0T). It seems to be stable at 2.0 GHz with over_voltage=6; it'll ...
0
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1answer
24 views

How to get more samples from ADC converter using SPI

I am trying to use ADC converter in my raspberry which has speed around 100k smp/s. I am setting clock as producent of converter recomend for 20 Mhz. But I only recive around ~ 43k samples/s and I can'...
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2answers
201 views

Max networking performance with RPi 4 (Gigabit ethernet), with/without a USB3 external disk connected

I want to use my RPi4 as a small home NAS. To do that, I'm trying to benchmark the maximum file transfer performance. Workflow: Rpi4 connected to home router with a 1 Gbit cable computer connected ...
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134 views

Samsung 64GB EVO Select U1 Failing SD Card Speed Test

I have a 64 GB EVO Select U1 SD Card (link). I ran the Raspberry Pi Diagnostics SD Card Speed test on it. The card always fails the random write test by a large margin (the target speed for this test ...
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2answers
559 views

sudo apt-get upgrade is extremely slow

I run a new installation of Minimal image based on Debian Buster on Raspberry Pi 3B. sudo apt-get update gone as usuall - 1-2 minutes. However, sudo apt-get upgrade is running already 1:30 or so. And ...
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78 views

Srcds on raspberry pi 4 with box86

I decided to move my game server to rpi4. I successfully moved server using qemu and chroot, but it's very slow. So i decided to use box86 instead, but this gives me bunch of library errors. I also ...
1
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1answer
56 views

How many parallel server applications are too much?

I am curious what general recommendations are. I would like to set up the following application, ideally on one device (RPi4, 4GB): InfluxDB and Grafana PiHole PiVPN and SSH nginx (simple) ...
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34 views

Raspi 4 - Extremely Poor LAN Performance

So I'm decently experienced with raspberry pis / SBC, but i've never seen anything like this before. I can't seem to get more than 2-5mbps down on this thing. I have a 400/20 cable connection here in ...
2
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1answer
55 views

Comparison between Object Detection Solutions on Raspberry PI

I have only little experience with embedded systems. I have a Raspberry Pi 4 with 1gb RAM and a Camera Module v2.1 and want to do object detection and tracking on it. By best solution I mean a ...
1
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1answer
216 views

Is it possible to use PAPI on a Raspberry Pi 4B with raspbian buster?

I want to use the PAPI library to record hardware performance counters during benchmarks, but it does not seem to work on my Raspberry Pi 4 B. Installing PAPI was not a problem, but there are no ...
0
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1answer
361 views

Improving web browsing performance on the Raspberry Pi 3

Web browsing on the raspberry pi 3 has become rather dreadful with a later version of raspbian. I am running raspbian on a Samsung EVO+ (which is supposedly faster than most SD cards..). I don't ...
4
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1answer
155 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 ...
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0answers
32 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-...
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1answer
448 views

Does this flat heat sink even work for cooling?

I bought a raspberry pi 4 case, and it came with these heat sinks you see in the picture + a fan. From the sizes, I guess the flat heat sink is for the CPU. I kind of find it hard to believe that this ...
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0answers
35 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
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1answer
700 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 /...
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0answers
473 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, ...
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1answer
367 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 ...
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1answer
30 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 ...
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0answers
326 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 ...
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138 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 ...
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1answer
627 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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1answer
95 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 ...
6
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2answers
2k 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
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1answer
172 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
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2answers
573 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 ...
2
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2answers
267 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 ...
-1
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1answer
595 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
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1answer
284 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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0answers
129 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 ...
9
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2answers
3k 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
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1answer
80 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
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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 ...
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2answers
463 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
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 ...
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3answers
2k 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
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1answer
92 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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0answers
1k 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
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1answer
282 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
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1answer
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 ...
3
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2answers
141 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
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1answer
310 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
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1answer
732 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, ...