Questions tagged [performance]

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

Filter by
Sorted by
Tagged with
0 votes
0 answers
25 views

5-second increment pauses on Pi Zero W

I've recently set up a Pi Zero W with the as-of-writing most recent Pi OS Lite image. It is connected to my home network via Ethernet and has Pi-hole installed on it. I found that during setup and, ...
user avatar
1 vote
0 answers
91 views

Performance of Raspberry Pi 4B Bullseye VNC headless

I have headless Raspberry Pi 4B 4GB Bullseye connected over USB-C to iPad Pro and I am using VNC to connect to it directly over a USB-C cable which also powers it. I have increased GPU memory to 256 ...
user avatar
  • 111
0 votes
0 answers
62 views

Why Raspberry Pi 4b is slower when boot up from USB flash drive than boot up from microSD card?

Providing that what I've read in this article is true I'm wondering why it's faster to run Raspberry Pi 4b from microSD, than it is to run it from decent speed (200MB/s read) USB Flash Drive? Is the ...
user avatar
0 votes
0 answers
213 views

SD card speed (IOPS) is awful

For a long time, I'm noticing that my Raspberry Pi 4 is slow in some scenarios, especially when some disk-consuming operations are running. For example, docker pull something might take around 5-10 ...
user avatar
  • 1
0 votes
0 answers
17 views

Measuring Hardware Performance Counters with perf_event_open on RPi 3

I am under RPi 3, Linux Rpi 4.9.80-v7+, perf version 4.9.82, and I have a deterministic code with a fixed input data, that runs a sort algorithm. I need to capture the runtime information of this code ...
user avatar
1 vote
0 answers
171 views

VNC poor performance on PI4 8GB Bullseye 64bit

I've a PI4 8gb model with a fresh install of Bullseye 64bit and Im getting really poor VNC performance over 2.4ghz wifi network, both devices the client (a mac book pro i9 w/64gb ram) and the server (...
user avatar
  • 111
0 votes
0 answers
96 views

perf_event_open on kernel 5.10.60

I am trying to run the perf_event_open documentation example (below) but it returns "Error opening leader 1". I am on a Rasp B+, ARM1176JZF-STM, Raspbian GNU/Linux 10 (buster), kernel 5.10....
user avatar
1 vote
3 answers
201 views

My RPi2 became very slow suddenly

I am running Raspbian on my RPi2 and on top of that a Node.js server. This morning the Node.js server went down, but I still have access to the SSH terminal. I ran top but couldn't see any processes ...
user avatar
0 votes
0 answers
75 views

Run Blynk server, Mosquitto and Node-Red on RasPi Zero?

Never used a pi before so I'm not sure how powerful they are/how much can they run at the same time. (Yes, I obviously know that it depends on what you're running). I was wondering, is there a good ...
user avatar
0 votes
0 answers
332 views

OpenCV image processing incredibly slow on Pi 3B+

I have a computer vision algorithm on my Pi 3B+ that uses the following function, myVision(), that takes in a frame and outputs the pixel coordinates of a certain colored dot (tuned according to the ...
user avatar
1 vote
1 answer
401 views

RPi 4B 4GB: Excessive Shut Down time using the GUI shutdown

I have 5 - 4B-4GB's and 1-8GB systems. One of the 4GB systems is experiencing an excessive shutdown (power off) time of 4.5 minutes. All the other systems take about 15-20 seconds, all my systems ...
user avatar
1 vote
2 answers
2k views

Raspberry Pi 3 B insanely slow on basically all tasks

My Raspberry Pi 3 B is only connected via Ethernet to the network and running a couple of server tasks, among them an HTML web server (nginx PostgreSQL Typo3). This was working perfectly fine for ...
user avatar
2 votes
0 answers
61 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/...
user avatar
0 votes
1 answer
239 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 ...
user avatar
0 votes
0 answers
29 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 ...
user avatar
3 votes
1 answer
676 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 ...
user avatar
  • 151
0 votes
1 answer
568 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, ...
user avatar
  • 53
1 vote
2 answers
767 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 ...
user avatar
  • 131
1 vote
1 answer
48 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'...
user avatar
1 vote
2 answers
2k 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 ...
user avatar
  • 654
0 votes
0 answers
321 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 ...
user avatar
  • 101
2 votes
2 answers
3k 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 ...
user avatar
1 vote
1 answer
122 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) ...
user avatar
  • 179
2 votes
1 answer
166 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 ...
user avatar
  • 21
0 votes
1 answer
568 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 ...
user avatar
  • 9
0 votes
1 answer
1k 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 ...
user avatar
  • 123
4 votes
1 answer
206 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 ...
user avatar
0 votes
0 answers
40 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-...
user avatar
  • 101
1 vote
1 answer
1k 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 ...
user avatar
1 vote
0 answers
56 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. ...
user avatar
3 votes
1 answer
1k 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 /...
user avatar
  • 41
1 vote
0 answers
718 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, ...
user avatar
0 votes
1 answer
1k 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 ...
user avatar
1 vote
1 answer
54 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 ...
user avatar
  • 111
1 vote
0 answers
460 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 ...
user avatar
  • 1,574
0 votes
0 answers
266 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 ...
user avatar
  • 113
1 vote
4 answers
2k 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)?
user avatar
  • 119
1 vote
1 answer
129 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 ...
user avatar
  • 231
6 votes
3 answers
4k 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 ...
user avatar
  • 1,281
1 vote
1 answer
397 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, ...
user avatar
3 votes
2 answers
1k 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 ...
user avatar
2 votes
2 answers
317 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 ...
user avatar
-1 votes
1 answer
720 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 ...
user avatar
0 votes
1 answer
501 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 ...
user avatar
0 votes
0 answers
192 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 ...
user avatar
11 votes
2 answers
6k 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 ...
user avatar
-1 votes
1 answer
107 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 ...
user avatar
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 ...
user avatar
0 votes
2 answers
525 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 ...
user avatar
  • 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 ...
user avatar
  • 121