> > Am Montag 26 September 2011, 13:21:30 schrieb Jani Monoses: > > > What do you get when running > > > > > > sudo time dd if=/dev/mmcblk0 of=/dev/null bs=4M count=1024 > > > > people should use the iflag=direct to get reliable (without caching) > > results, e.g. > > > > sudo dd if=/dev/mmcblk0 of=/dev/null iflag=direct bs=4M count=64 > > > > gives > > > > 268435456 Bytes (268 MB) kopiert, 10,2791 s, 26,1 MB/s (+/- 0.5 MB/s) > > It seems faster that way for me - 30Mb/s.
yes, seems that the caching subsystem has some negative footprint. See e.g. https://lkml.org/lkml/2011/5/25/499 Marc _______________________________________________ Mailing list: https://launchpad.net/~ac100 Post to : [email protected] Unsubscribe : https://launchpad.net/~ac100 More help : https://help.launchpad.net/ListHelp
