Federico Lorenzi wrote: > Makes sense, ext3 is journaled, and using a journaling FS on flash > memory is generally a bad idea. Could you also try ext2?
Sorry, I'm not up to speed on flash and file systems -- why is a journaled file system a bad idea? I re-ran all of my tests on the new 8GB SanDisk micro SDHC card: I built an 8GB partition, type 'b' (win95 fat32), formatted as 'vfat' done on Ubuntu, then installed in my Freerunner and started up: [EMAIL PROTECTED]:/media/card# /opt/iospeed2 testfile 100 Size (MiB) Write (MiB/s) Read (MiB/s) 100 2.038 2.755 Ran fdisk on the Freerunner, changed partition type to '83' (linux), formatted as ext3, re-mounted as /media/card: [EMAIL PROTECTED]:/media/card# /opt/iospeed2 testfile 100 Size (MiB) Write (MiB/s) Read (MiB/s) 100 2.046 2.643 Then re-formatted as ext2 and re-mounted as /media/card: [EMAIL PROTECTED]:/media/card# /opt/iospeed2 testfile 100 Size (MiB) Write (MiB/s) Read (MiB/s) 100 2.107 2.779 Conclusions: - very little difference writing a 100MB file. - ext3 is slower, on average for reading, while vfat and ext2 are pretty similar. Should I try it again with smaller file sizes? Should I try it again with the various partition/fs types running bonnie++ to see how it benchmarks things too? _______________________________________________ Openmoko community mailing list community@lists.openmoko.org http://lists.openmoko.org/mailman/listinfo/community
