Questions about software, hardware or network performance. Please use as a supplement for other, more specific tags.
0
votes
1answer
48 views
Striping down for java/swing only thin client
Very important note: This same question is also asked at the raspberry pi forums. I guarantee to copy answers from here to there with correct credentials.
Hello everyone
I am currently developing a ...
2
votes
2answers
96 views
Does dust accumulation on raspberry pi causes heating problem
My raspberry pi is placed where a lot of dust accumulates on the surface.I recently checked and there was a layer of dust settled on it.
I cleaned up the device and restarted it.
To my surprise, Its ...
4
votes
1answer
164 views
CUPS is too slow, how can I make it faster?
I'm using CUPS for my Samsung CLP-315. It works very well, but it is too slow. It normally takes five minutes or more to print a single page (from pdf).
When it's printing, gs is taking 100% of the ...
2
votes
1answer
75 views
How do I improve speed of photo/image resize? (~8MB to ~100KB)
I'm building a program which reads photos off an SD Card then resize the images and upload them to Flickr (note, it's a second SD Card reader, not the one on-board)
The photos are high-resolution ...
1
vote
3answers
161 views
Can the original StarCraft be played on LAN with a Raspberry Pi?
I often meet with friends and if not more than one computer is available, we take take turns playing games. Instead, would we be able to use a Raspberry Pi with an additional monitor/keyboard/mouse to ...
2
votes
1answer
77 views
Would Scrapy Be Ok To Run on A Raspberry Pi?
I'm thinking of getting a raspberry pi to do some scraping work so i can go out while everything continues to run while at home. Is there any reason why Scrapy would be a bad idea for a Raspberry Pi ...
3
votes
2answers
278 views
Expected User Limit of IRC Server on Pi 512 MB?
Does anyone have a clue of the maximum number of users RPi 512 MB could handle if running an IRC server? I'm just looking for an approximate number, is it 100, 10'000 or millions?
0
votes
1answer
332 views
Hadoop on the Pi
I've seen a couple of articles claiming to build a "super computer" using several Raspberry Pis. I know the processing power of the Raspberry Pi is relatively slow so you're not going to be simulating ...
0
votes
1answer
193 views
Performance difference Raspbian versus Gentoo
Is there a measurable difference in CPU performance between Gentoo and Raspbian?
With Gentoo you use different compiler flags and with the USE flags compile only what you need. In Raspbian all ...
10
votes
3answers
2k views
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 ...
2
votes
1answer
160 views
Comparison of Python Gui performances
I am building a data visualization application. It is a multithreaded Gui without user interaction.
I have 24 widgets that shall be updated any 100ms. 16 widgets are PyCairo rectangles and the other 8 ...
3
votes
1answer
866 views
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 ...
1
vote
0answers
76 views
Interfacing external device using accurate high-speed clock signal
I need to interface device using specific synchronous protocol that requires clock signal within 1..2MHz. Period instability shouldn't exceed 10%. Also, in certain condition protocol requres clock ...
5
votes
5answers
6k views
Will a Raspberry Pi perform well with XBMC and many movies?
I have a library with more than 1000 movies and I'm searching for a cheap but good performance media centre system.
I've been using a Xtreamer Prodigy until now but it's firmware's a little slow ...
0
votes
1answer
350 views
Benchmark USB HDD
I'm using an external USB 2.0 HDD to extend the storage of the Pi which holds my movie-collection.
I'm experiencing problems with skips when playing HD movies (720p / 1080p). Also, when transferring ...
2
votes
3answers
230 views
How Viable is an RPI Laptop?
I've been seriously looking into making one of the Raspberry Pi Laptops that have been floating around using the Motorola Atrix Lapdock solution found here and here.
The whole reason for doing this ...
6
votes
4answers
3k 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 ...
1
vote
0answers
233 views
Is zero semblance of Xorg rendering performance normal?
I'm trying to setup a simple little configuration running a dedicated piece of software to display slides. Unfortunately the software uses some OpenGL extensions. No 3D mind you, just some basic font ...
6
votes
2answers
2k views
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 ...
5
votes
1answer
410 views
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 ...
6
votes
2answers
370 views
X forwarding and GPU memory allocation
I run my Raspberry Pi headless and typically use X forwarding to run applications.
I'm wondering what split I should use for allocating the RAM. I am not sure whether it is the server or the ...
3
votes
7answers
2k views
What is the lowest power, most compatible, most compact usb wi-fi adaptor that works out of the box with the Raspberry Pi?
It seems that several people (myself included) are having great difficulty getting different wi-fi adapters to work reliably with the Pi. Some adaptors seem to require excessive amounts of power and a ...
7
votes
1answer
988 views
omxplayer: h.264 bitrates and encoding settings for stutter-free playback
we just received six raspberry pi boards with 512mb ram and plan to use them for hdmi playout. initial tests were working great with omxplayer, but we are experiencing extreme stuttering issues for ...
0
votes
1answer
780 views
How can I stress test my Raspberry Pi
I recently picked up a battery powered USB cell phone charger and I'm running some tests to see what kind of battery life I will get. Right now I'm just testing at Idle. I want to also run a test ...
4
votes
2answers
1k 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 ...
3
votes
3answers
1k 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 PI and got 20 MB / sec. It is a class 6 ...
15
votes
3answers
11k views
Why does the Raspberry Pi need a MPEG-2 licence?
Since August 24, 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 it ...
1
vote
0answers
317 views
What cool things are we doing with the Raspberry Pi? [closed]
I'm curious about buying and trying out the Raspberry Pi! I'm a moderately experienced linux user. Would love to hear what applications people are using the computer for at home or other, and just ...
5
votes
1answer
865 views
Could raspberry be a good choice for home monitoring?
I'm not sure if this is the correct thread to ask but I need to start somewhere
What I'm looking to do is small box computer that I can mount on wall near the exit from my house that would monitor ...
3
votes
1answer
556 views
How do I connect a DS18B20?
I'm trying to connect a DS18B20 to the GPIOs. I have successfully done so electronically, but I could only code the reset function because it's not that time critical. It is OK for that function to ...
3
votes
4answers
2k views
Does Raspberry Pi runs Minecraft and Netbeans 7.2?
I have a computer with 512MB of RAM Memory, CPU Intel Celeron 1.60GHz and a 80GB HD. After the new Minecraft update to 1.3.X, Minecraft don't run on my computer any more even on Windows XP and Lubuntu ...
14
votes
4answers
4k views
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 specs and it states that it is "working". Even simple ...
24
votes
7answers
30k views
Can the Raspberry Pi be used as a media center?
I am looking for a simple solution to play videos and music stored on my NAS.
I've found the Raspberry Pi and projects like OpenElec and RaspBMC which will run XMBC on the board.
My problem is that ...
16
votes
4answers
5k views
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 ...
7
votes
1answer
802 views
Hard-float and performance
Ever since the official Raspbian image came out, there has been much talking about hard-float - often cited as one of the most prominent Raspbian features, promising "tremendous performance boost".
I ...
15
votes
3answers
12k 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
...
16
votes
1answer
996 views
How do I turn on Level 2 (L2) cache?
It has been suggested to me that 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 ...
8
votes
1answer
1k views
Why does python run relatively slowly?
I've been benchmarking the Pi on some of my simulation codes, relative to a couple of laptops I have. My codes tend to be floating point intensive, so I've been using Raspbian (which turns out to be ...
7
votes
1answer
1k views
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?
8
votes
3answers
11k views
Can I speed up web browsing on the Raspberry Pi?
Browsing the web using Midori on the Raspberry Pi feels very slow.
I appreciate that the speed at which a web page will load is determined by a number of factors including: the speed of the network ...
20
votes
4answers
3k views
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 ...
13
votes
6answers
5k 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 ...
14
votes
1answer
3k 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 ...
18
votes
2answers
4k 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 ...
7
votes
2answers
853 views
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?
11
votes
1answer
4k views
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 ...
19
votes
3answers
6k views
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 ...
