Il giorno mer, 05/06/2019 alle 19.39 +0200, Greg KH ha scritto: > On Wed, Jun 05, 2019 at 06:23:58PM +0200, Andrea Vai wrote: > [...] > In ssh I manually mount the media, > then > > run > > > > touch begin > > date > > <cp command> > > date > > touch end > > That tests nothing other than the size of the memory in your system > :( > > You have to flush the data out to the device fully in order to > properly > measure device throughput. Calling 'touch' does not do that. > > > If I use the DE (where the media is mounted automatically) I used > to > > "eject" the media after the copy finished, and took note of the > time > > used until the media was correctly "ejected" (and, so, unmounted). > > eject/unmount is good. > > > Anyway, I know that I can do all of this in a better way, and will > let > > you know. > > Yes, please do so, your steps above do not show much. so, just to be sure now, here is my test script: touch inizio date mount UUID="6a9d3c05-6758-49c0-a46e-6ce221478eb3" /mnt/pendrive cp /NoBackup/buttare/ubuntu-14.04.5-desktop-i386.iso /mnt/pendrive umount /mnt/pendrive date touch fine can you please confirm (if) it's fine? > > And you need to get your auto-mount out of the way, as who knows > what > options your device is being mounted with (i.e. sync or no > sync). You > have to control that yourself in order to be sure. yes, I disabled the auto-mount. Furthermore, is there any option I need to specify to the mount command (i.e., as you say, sync or no sync)? thanks, bye Andrea
