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

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0
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1answer
24 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 ...
1
vote
0answers
35 views

Raspberry Pi 3 as Git “Server” [closed]

Will the power of the Raspberry Pi 3 be enough for running a git "server" for medium size projects? I know this question has been asked before, but i don't mean any Web interfaces or something, just ...
3
votes
3answers
80 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 ...
1
vote
0answers
64 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 ...
0
votes
3answers
71 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 -" ...
1
vote
1answer
45 views

Does being undervoltage decreases the Pi's performance?

I recently blew up the 5V 2A PSU that came with my Pi. Since then, I am using my phone's charger, 5v 1A to run my Pi. And while it runs fine most of the time, I see the undervoltage warning, while it ...
2
votes
2answers
122 views

Getting extremely low fps on Rpi 3 while image processing

I am working on a project that requires image processing to detect a traffic light and take action based on its status (on or off). I initially developed the code on my PC, using OpenCV and Python, it ...
0
votes
0answers
77 views

The Hashrate of the Raspberry Pi 2 and 3

I've been searching for a definitive answer to the above question, but somehow only seem to find semi-true statements (according to replies to these statements), or very outdated answers (for example ...
0
votes
0answers
18 views

Input unresponsive in X when rdesktop host spams full screen redraws

I have a Pi 2 Model B running Raspbian Jessie, updated to recent firmware via rpi-update, running rdesktop -f at 1920x1080 to a Windows host. I'm running into an issue where, when running Chrome on ...
2
votes
1answer
105 views

Does have Raspberry Pi enough performance for Computer vision process in c++

I will write a computer vision application in C++. I need to choose a hardware platform. I cannot use a PC (laptop, desktop, etc). I will process a video that I take a camera. Can I use a Raspberry ...
0
votes
2answers
79 views

Driving 32x32 LED grid via GPIO preventing other processes from running

I have a project running a 32x32 LED grid based on these instructions: https://learn.adafruit.com/adafruit-rgb-matrix-plus-real-time-clock-hat-for-raspberry-pi/driving-matrices which relies on these ...
3
votes
1answer
273 views

Only 2.5 MB/s transfer rate on WiFi

I have a raspberry pi that I use as a router, the configuration is basically as follows : Raspberry Pi Zero with raspbian (latest 4.4 kernel) USB 3.0 HUB with 4 ports connected to the main micro ...
1
vote
2answers
164 views

Performance with an encrypted disk

Is Raspberry Pi (model B, rev. 2) suitable for a home file server with external disks encrypted with LUKS? In particular, is the de/encryption throughput reasonable? I used to have such a disk in a ...
0
votes
0answers
610 views

Seafile 5 vs. Owncloud 8

I've currently installed Seafile 5.0.3 on my Raspberry Pi (V1 B+). I'm considering to replace Seafile with Owncloud (current Version 8.2.2) because it looks much nicer (more flat design) than Seafile,...
4
votes
2answers
155 views

Raspberry Pi Camera Module slower than Desktop Webcam

I'm using CodeBlock IDE on raspberry pi 2 with raspberry pi camera module to run face detection program (via Haar Cascade). Now I've compared its performance using Microsoft LifeCam (USB connection) ...
1
vote
0answers
156 views

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 ...
1
vote
1answer
83 views

How to simulate the performance of a RPi in a VM?

I would like to roughly check if the code I plan to run on a RPi stresses it in a reasonable way (CPU, RAM, disk). I was wondering if there are some "throttled down" Debian VMs which could be used (...
1
vote
2answers
94 views

Check performance of SD card and USB flash drive

I have a Pi B+ running openelec 6.0 and I am using it as backend/frontend to record over-the-air TV programs. So far everything seems pretty good aside from some performance issues. I am interested in ...
2
votes
3answers
267 views

Have people tried doing comparisons between Intel Celeron and Pi Model B+? [closed]

Has anybody documented if there had been any actual comparisons between the Pi Model B+ and an old Intel Celeron system (either desktop or laptop). I ask as, while I have seen plenty of comparisons ...
0
votes
0answers
8 views

JIRA on Raspberry Pi 2 [duplicate]

Does JIRA run well on the Raspberry Pi 2? I think about buying the 10$ version for managing my own projects. Currently I work with Bitbucket but I want to host it at home.
4
votes
1answer
582 views

SDL2 performance

Is it possible to use SDL2 with 2D hardware accelerated rendering on Raspberry Pi? If 2D hardware accelerated rendering is possible on the device, how do you check to see that your application is ...
0
votes
1answer
466 views

How to: Raspberry Pi Cluster

My question is if there anyway possible to merge many Raspberry Pis to improve performance? (eg. Run one OS in two raspberry?)
2
votes
1answer
163 views

Would booting off of a USB hard drive increase the responsiveness of my Raspberry Pi 2?

I love the Raspberry Pi as a computing platform but sometimes I cannot stand the sluggish performance of the device. Occasionally when I'm browsing the internet or even trying to open the regular ...
1
vote
1answer
731 views

Node.js and its require() function is too slow

I've built an application on Node.js and works instantly (in 300 ms) on Core i7 processor, Debian Scratch. When I try to run the same application on Raspberry, startup time is 7.2 seconds!. While ...
1
vote
1answer
2k views

Youtube on Raspberry Pi 2 (Model B)

I just bought a Raspberry Pi 2 (model B) for my father. After a few trials, which included: installing Ubuntu Mate installing Raspbian I finally converged to plain Ubuntu (14.04), which works ...
1
vote
2answers
2k views

Ridicoulus File Server performance

I've setup a file server using my new PI, and I'm very disappointed about the performance. I have attached by USB 2.0 2.5" HDD with an USB hub, formatted using NTFS, and mounted automatically. I had ...
14
votes
1answer
800 views

Why does the SD card random write performance for record size 8-128 kB drops below the performance of record size 4 kB?

When I check the performance of SD cards for random write, I can see the performance is quite bad for record size 4 kB (this is not surprising) but then for several cards it even drops for larger ...
1
vote
0answers
595 views

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 (...
1
vote
0answers
30 views

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 ...
2
votes
2answers
104 views

Maximizing the performance + life of an unsupervised RPi

Background: hobby coder running Raspbian on a Model B. I've deployed a RPi in my brother's garage. It connects to a few temperature / moisture / etc sensors (via Python, over a serial connection) and ...
1
vote
3answers
4k views

Is raspberry pi 2 model B a good candidate as a “Download Box” or NAS

I am planning to buy Raspberry pi 2 Model B. Predominantly for two purposes, Download Box (for Torrents, ftp / http downloads) Web Server (For replying some requests to Local Client computers ) and ...
4
votes
3answers
3k views

New PI 2 B+ unusably slow, CPU and RAM not being used?

Just setup a new R Pi 2B+, using raspbian on a 16gb sd card, ethernet, USB mouse/keyboard and HDMI out. Finding it extremely slow - the UI is reasonably responsive however installing monodevelop took ...
2
votes
1answer
110 views

How much performance do I lose, when running the desktop (but not using it)?

Using raspi-config you can decide whether the pi should boot into a desktop environment or not. I only use my pi over ssh so if the desktop is there or not does not matter to me at all. My question ...
1
vote
0answers
231 views

How to avoid high cpu load while using spi with the bcm2835 c library? [closed]

I'm trying to use the bcm2835 c library to get data from an ADC (I'm running raspbian of a raspi B+). So far I've been using the default configuration with success: if (!bcm2835_init()) { ...
0
votes
3answers
17k views

Why is my Raspberry Pi 2 with OSMC slow?

I just installed my new Raspberry Pi 2 B model with the OSMC OS Alpha version 4. While the Pi 2 is supposedly much faster, I experience the device to be not very responsive when navigating the menu's ...
3
votes
2answers
482 views

Can I get better performance on Raspbian if I blacklist a lot of kernel modules in raspi-blacklist.conf?

I have a Raspberry Pi that is being used only for displaying a single webpage. I have the memory split set at 64M for the GPU. The display does not require sound, web-video, usb-devices, user-input. ...
0
votes
0answers
10 views

40Mhz pulse counting and storing count value [duplicate]

I am new to Raspberry pi. I need to count 40 Mhz continuous pulse for every 100 microseconds and store the count in micro SD card before next cycle starts. The process should run for 24 hours. I am ...
2
votes
1answer
1k views

NTFS with high CPU usage

I'm using a RPi B+ with XBian and transmission, and an external USB 2TB disk, which has an external power supply. That disk is NTFS, and I've noticed that the CPU usage of the mount-ntfs process is ...
1
vote
0answers
71 views

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 ...
0
votes
1answer
559 views

Weak performance during motion detection with picamera and python script

To dig into the picamera python api i just started a simple motion detection script. It runs in the videomode with 2 frames/second and a resolution of 320x240. Frames are captured with the ...
0
votes
0answers
324 views

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 ...
3
votes
1answer
460 views

Execution time performance when counting up to 1,000,000,000

I have made a simple C++ program that simply counts up a variable to 1,000,000,000 and then displays the time it took. I used a simple for loop to do this. for(long n=0;n<1000000000;n++); The ...
1
vote
0answers
248 views

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, ...
2
votes
1answer
158 views

How to make an kiosk type application for the car? [closed]

How would I create an application that is the first and only thing a user sees? I want to create an application for my car. The app will need to boot as quickly as possible and completely take over ...
0
votes
2answers
250 views

Optimising raspbian performance for python script

(I know this is probably the most overkilled question but) I've designed a pretty heavy code/script in python, which yes would of been better implemented on c, but in saying that short of over ...
1
vote
1answer
137 views

Does my raspberrypi take up resources if I startx but remote ssh into the machine?

I was wondering how to get the best performance out of my pi and currently the gui is started with startx automatically on boot, however I intend on using the pi remotely. My question then is: does ...
1
vote
3answers
233 views

Is Raspberry Pi powerfull enough for commercial web development?

I'm considering buying a raspberry for everything work related, especially software development for the web, since i'm a software engineering student and web start up founder. I would like to know if ...
1
vote
0answers
287 views

Stream unencoded raw video bit data to a machine with a good GPU to speed up video processing time? [closed]

I have a Pi B+ and a HD USB Webcam, as well as an improved wifi card (300Mbps). I am working on a research project where I want to build multiple 'camera units' (lets say 3 as an example). each camera ...
2
votes
1answer
195 views

State of art in performance of Raspbmc

I'm using Raspbmc and it's awesome. But i feel a (in my opinion) huge delay to load videos. So I started to find bottlenecks. So here are my changes: Using a very good quality SD card, which has a ...
2
votes
0answers
468 views

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 ...