Questions tagged [performance]
Questions about software, hardware or network performance. Please use as a supplement for other, more specific tags.
41
questions with no upvoted or accepted answers
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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
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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
3
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0
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902
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Is RaspberryPi OpenCV fast enough to run eye blink recognition?
I would like to create application that can recognise eye blink recognition on RaspberryPi with Raspberry Pi Noir camera.
Eye blinks are fast, so I will have to process many frames per second.
Is ...
- 396
2
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0
answers
81
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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/...
- 39
2
votes
0
answers
838
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Running a webserver unikernel on RaspberryPi
Is there anyone who have tried to install a webserver unikernel on a Raspberry?
In both cases, is it something possible and could one run an efficient webserver from it? What are your thoughts on ...
- 21
1
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0
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25
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Port forward fails on high data traffic, how can I fix it?
I wanted to test the bandwidth over port forwarding via iperf:
On the first terminal: ssh myraspberry -R 5001:localhost:5001 -L 5002:localhost:5001
On the second terminal: iperf -s
On the third ...
- 287
1
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0
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149
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Windows 10 -> Raspberry PI 4 Samba Share Speed extremely slow unless pause and resume
I've been trying to set up my Raspberry PI 4 as a home media server and was planning to use Samba to transfer files from my Windows 10 PC to the Raspberry PI. Currently, I get speeds of <5 MB/s ...
- 11
1
vote
1
answer
49
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bluetoothd CPU usage constant at 100 %
I've had this problem for a few months where the Pi 4 gets very hot to the touch, and it invariably turns out that bluetoothd is stuck at 100 % CPU usage, saturating one core. Currently htop tells me ...
- 175
1
vote
1
answer
566
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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 a decent speed (200MB/s read) USB Flash Drive?
Is the ...
- 111
1
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0
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731
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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 ...
- 11
1
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0
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257
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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 (...
- 111
1
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0
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75
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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. ...
- 135
1
vote
0
answers
824
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, ...
- 13
1
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0
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511
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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 ...
- 1,739
1
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0
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157
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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
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0
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1k
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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
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0
answers
216
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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
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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....
1
vote
0
answers
2k
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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
1
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0
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760
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RPi2 Or ODROID-C1 for better OpenCV performance?
I am planning for a project requiring face recognition using OpenCV and got confused between two boards at same price - the Raspberry Pi 2 and ODROID-C1.
My question is which board is more suitable (...
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1
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0
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39
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Trouble running Pi NoIR camera board at documented speeds
The Pi camera board is described as running HD video at 30fps or 0.033spf. I'm using the picamera python module (the only API I could find) and trying to implement the client example. At less than ...
- 221
1
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0
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127
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How can I tell if Java is performing properly?
There are many different versions of Java and many instructions on how to install the fastest Java version on a Raspberry Pi.
How can I tell if the one I've installed is using hard floats? Are there ...
- 111
1
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0
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367
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Is it normal to irssi freezes when receiving dcc?
I'm running it over screen with Raspberry Pi Model B, but when a streaming begins, I am unable to type anything, even Meta + Arrow doesn't work, but changing screen's window with Ctrl + A # works, so, ...
- 111
0
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0
answers
55
views
Using DMA for efficient memory copying
Some background info about my problem:
I have an external device that is constantly giving me data through SPI
I handle SPI reads with DMA from userspace, as kernel based solutions (already ...
- 133
0
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0
answers
54
views
Improving Raspberry Pi 3 Hashrate
I have a Raspberry Pi 3 Model B+ (2017 printed on the circuit board) and I am mining XMR. So far my hash rate hovers at around 0.5H/s.
I have read several posts mentioning performance at around 10H/s ...
0
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0
answers
28
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, ...
- 101
0
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1
answer
284
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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 ...
- 109
0
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0
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98
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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 ...
0
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0
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598
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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 ...
- 101
0
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0
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34
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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 ...
- 101
0
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1
answer
912
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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, ...
- 53
0
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0
answers
397
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 ...
- 101
0
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0
answers
53
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-...
- 101
0
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0
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332
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 ...
- 113
0
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0
answers
248
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
0
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0
answers
2k
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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
0
votes
0
answers
71
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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
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0
answers
502
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RetroPi on B+ - Slowness, music glitches when WiFi connected
I have a B+ with retropie 2.3 installed.
I've sucessfuly connected a TP-Link TL-WN722N WiFi dongle.
It seems that most roms run slower and have music glitches when dongle is connected. When I ...
- 109
0
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1
answer
152
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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
-1
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1
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861
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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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-1
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1
answer
108
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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