Questions tagged [performance]
Questions about software, hardware or network performance. Please use as a supplement for other, more specific tags.
34
questions
27
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5
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Why is my SD card slow?
My SD card seems to be running slow. I have an ADATA 16 GB SDHC Class 10 card. I checked the compatibility list which lists a card with similar specifications, and it states that it is "working". Even ...
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38
votes
5
answers
15k
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What are the overclocking capabilities?
I've not ordered mine (yet!), but I do some overclocking as a hobby to the extent that my netbook, Android phone, desktop, and even my wife's Blackberry are overclocked.
Is there potential to ...
- 2,103
21
votes
1
answer
7k
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How can I use a USB HDD to extend the life of my SD Card?
How can I set up a USB HDD to extend the life of my SD Card and maximize the performance of my Raspberry Pi?
Related: How can I extend the life of my SD card?
- 5,883
17
votes
7
answers
57k
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How to change the default governor?
I want to change the default governor on my pi from ondemand to performance. Is there a way of doing this?
- 959
16
votes
1
answer
8k
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Running 1080p video from within XOrg smoothly
The 1080p examples that work outside of X.Org run very smoothly on my Pi, but within X.Org they don't run very smoothly at all at the moment.
Given that X.Org is currently not GPU-accelerated, this ...
- 10.9k
44
votes
3
answers
63k
views
Why does the Raspberry Pi need a MPEG-2 licence?
Since August 24 2012, it is possible to buy a licence to hardware-decode MPEG-2 videos.
Here are my questions:
Does it mean that, without this licence, the RPi cannot handle at all MPEG-2 video, or ...
- 3,693
43
votes
2
answers
23k
views
What kind of performance can I expect from using a Raspberry Pi as a webserver?
Has anyone done some web server benchmarking on their Raspi? I don't have my Raspi yet but I'm planning on using it as a web server and I'm interested to see stats for:
Number of requests per second
...
- 753
36
votes
4
answers
28k
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What is the highest performing hardware configuration?
I know that exact benchmark numbers will vary between manufacturers, but in general if you only consider higher end flash drives, SD cards, and USB HDDs and your Raspberry Pi is connected to a network ...
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33
votes
3
answers
41k
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What speed can I expect from the hardware-H264-encoding?
I stumbled over the Wikipedia-article that the Broadcom GPU has hardware support for encoding H.264/AVC, not only de-coding.
I also found an article where someone gave an example using ffmpeg to ...
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30
votes
4
answers
9k
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Is there anything I can do to improve boot speed?
I love my Pi, but it takes a considerable time to boot. If I want to use it as a Media Centre, it's quite important that it powers up quickly.
Are there any steps I can take to improve boot ...
- 22.5k
24
votes
3
answers
34k
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Where is the bottleneck of web browse speed on raspberry pi?
On a Model B 512 MB Pi with Raspbian “wheezy”, I have tried Midori, Chromium and Iceweasel. When the web page gets larger, loading is slow, even after I overclocked it to 1 GHz. On an Android phone ...
- 343
19
votes
3
answers
2k
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Is it possible to mine Bitcoins?
Obviously, the RPi can be used to mine Bitcoins on the CPU, but this would be very slow.
Is it possible to use the GPU to mine Bitcoins?
- 15.4k
5
votes
2
answers
6k
views
Usb disk over network - performance
Using a simple setup with PI as a NAS, with an attached USB disk, like this:
[RPI] (USB) -> Ethernet
-> USB 2.0 Disk
Of course both network and disk access share the same USB port, but ...
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 ...
- 121
1
vote
3
answers
1k
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 ...
- 703
65
votes
6
answers
125k
views
How do I determine the current MHz?
I've been trying to get an accurate reading of my Raspberry Pi's MHz, since I overclocked it in /boot/config.txt
My /boot/config.txt is as following:
pi@raspbmc:~$ cat /boot/config.txt
arm_freq=900
...
- 963
32
votes
6
answers
34k
views
What is a typical boot time for the standard Debian distribution on a typical SD card?
How long does the RasPi take to boot when using the standard Debian distribution on a typical SD card? Are we talking less than a second? A couple of seconds? 10 seconds? 100 seconds?
This isn't too ...
- 1,459
25
votes
1
answer
7k
views
How do I turn on Level 2 (L2) cache?
It has been suggested to me that the L2 cache is turned off by default on the Pi, and that turning it on could improve CPU performance (probably at the expense of GPU performance). I'm keen to explore ...
- 2,912
23
votes
1
answer
11k
views
Can I stream 1080p video from the Pi?
We all know the Pi can play 1080p video no problem, but is it fast enough to act as the basis for a file server that can stream 1080p video over its wired network connection?
I'm thinking of using ...
- 10.9k
19
votes
8
answers
39k
views
Is Pi powerful enough for an oscilloscope project?
My goal is to make Pi based instruments, starting with an oscilloscope. So I read answers to
What Analog to Digital Converters Are Available For RPI?
How can I connect an analog to digital converter ...
- 193
13
votes
4
answers
11k
views
SD card write speed seems to be 14 times slower than read speed
I was writing to an SD card this evening from a Mac Book Air internal card reader, and the performance reported was 1.4 MB/sec. I later read tested it on the Raspberry Pi and got 20 MB/sec. ...
- 489
6
votes
3
answers
20k
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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 ...
- 204
6
votes
2
answers
10k
views
How the usage of ZRam module in Raspberry Pi Kernel improves performance?
zRam increases performance by avoiding paging on disk and instead uses a compressed block device in RAM in which paging takes place until it is necessary to use the swap space on the hard disk drive
...
- 161
6
votes
2
answers
2k
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Industrial applications
I've been wondering what's the durability of the RPI and the maximum temperature it can operate on. Is it possible to use it to replace some industrial computers?
I'm thinking set-top boxes for ...
- 161
6
votes
1
answer
2k
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 ...
- 251
5
votes
6
answers
3k
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 ...
- 502
5
votes
2
answers
11k
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 ...
- 153
4
votes
1
answer
2k
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SMB performance issues on Raspbmc
I'm having some serious performance issues (i think) using raspbmc to stream videos/music from my windows XP machine.
The setup is as follows:
In the attic : Windows XP P4 3.4Ghz 4Gb ram, edimax ...
- 950
3
votes
2
answers
2k
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Finding cards optimized for random read/write
In a recent article on the official Pi site the authors mention that a class 4 SD card which is optimised for random read/write can be faster than a class 6 or even a class 10 card which is optimised ...
- 302
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 ...
user105099
2
votes
1
answer
6k
views
Slow file transfer to USB thumbdrive
Currently my files are transferring at a speed of 10 kilobytes/s or less to a thumbdrive that is Fat32 formatted. I have a pretty stock Raspian install, and I've done an rpi-update. I am using a ...
- 151
1
vote
2
answers
1k
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 ...
- 131
1
vote
1
answer
1k
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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 ...
0
votes
0
answers
502
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 ...
- 109