3 ms·
Kingston lists the write cycles as 3000-5000, this would shorten your calculations by at least 20x. http://media.kingston.com/pdfs/FlashMemGuide.pdf http://me
by epitomix 14y ago
Kingston lists the write cycles as 3000-5000, this would shorten your calculations by at least 20x.
http://media.kingston.com/pdfs/FlashMemGuide.pdf http://media.kingston.com/pdfs/FlashMemGuide.pdf
Also, see this thread:
http://www.raspberrypi.org/phpBB3/viewtopic.php?t=21281&p=204596 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.
- ChuckMcM 14y agoSo 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); } open(my $fh, ">", "$nm.delete-me"); foreach (1 .. 128) { $nm .= substr($letters, rand($range), 1); } print $fh "$nm\n"; close $fh; } `sync`; `rm *delete-me`; } Killed it dead in 3 hrs 18 minutes. Your mileage may vary. May not be 'first hand' enough though.
- epitomix 14y agoNice 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.
- ChuckMcM 14y agoFWIW, in normal operation my Raspberry Pi mounts everything but the root volume from NFS. Very few writes are left to go to the system.