Wordpress site running on Raspberry Pi

Post by epitomix » Sat, Dec 01, 2012, 2:30 AM UTC

ChuckMcM wrote: post #30

K2h wrote: post #28

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Chuck - can you point to more articles or first hand evidence of lifetime testing of SD cards? I am very curious.

Well, Intel used to have a service life comparison for flash up on their site but I can't find it now :-(. There was also a great article on it in EE Times which has also faded apparently. SanDisk in its 2004 document [1] re-iterates the 100,000 writes limit. Typically flash is broken up into 'pages' and a page can be as small as 8K bytes and as large as 128K bytes, there are reasons for doing it different ways (most…

Post by epitomix » Sat, Dec 01, 2012, 4:20 AM UTC

ChuckMcM wrote: post #32

epitomix wrote: post #31

Earlier quoted context omitted.

Kingston lists the write cycles as 3000-5000, this would shorten your calculations by at least 20x. http://media.kingston.com/pdfs/FlashMemGuide.pdf Also, see this thread: http://www.raspberrypi.org/phpBB3/viewtopic.php?t=21281&... Edit - The Kingston data is a bit dated but in any case 10000 is probably a better number for cheaper cards.

So I did a non-scientific test on my Raspberry Pi at home with a 4G card that has typically been my 'move an .iso around' it is a 'class 10' card from Microcenter Warehouse. Using this perl program: #!/usr/bin/perl use strict; use warnings; my $letters = "ABCEDEGHIJKLMNOPQRSTUVWXYZ-"; my $range = length $letters; while (1) { foreach (1..16) { my $nm = "A"; foreach (1 .. 15) { $nm .= substr($letters, rand($range), 1);…

Post by alpb » Sat, Dec 01, 2012, 8:38 AM UTC

jacquesm wrote: post #23

alpb wrote: post #21

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Haha, I liked this conversation! @jstalin I'll get my raspberry pi delivered in a few days, I'll let you know if I can figure out the varnish issue. Meanwhile, you can also submit a ticket on Trac https://www.varnish-cache.org/trac

The quickest way to get an answer regarding varnish issues is to ask on the irc channel. irc://irc.linpro.no/#varnish

Post by ChuckMcM » Sat, Dec 01, 2012, 10:47 PM UTC

epitomix wrote: post #33

ChuckMcM wrote: post #32

Earlier quoted context omitted.

So I did a non-scientific test on my Raspberry Pi at home with a 4G card that has typically been my 'move an .iso around' it is a 'class 10' card from Microcenter Warehouse. Using this perl program: #!/usr/bin/perl use strict; use warnings; my $letters = "ABCEDEGHIJKLMNOPQRSTUVWXYZ-"; my $range = length $letters; while (1) { foreach (1..16) { my $nm = "A"; foreach (1 .. 15) { $nm .= substr($letters, rand($range), 1);…

Nice work, thanks. I can see now how the cloud will be important with these small devices. I wonder how OUYA (and similar devices) is going to manage data and what the lifetime of the storage will be.