On 2017-12-27 06:58, Robert P. J. Day wrote: > time to kill, so i found an unused 1TB USB hard drive in the drawer > and thought, what the heck, just do an end-of-year backup of all of > /home/rpjday on my fedora box, and since i don't care how long it > takes, i just did a basic "cp -a" to preserve owner/group/timestamps, > and it's chugging away, but i'm curious ... what would be the > *fastest* way to do that? > > should i have run it through tar with compression, or rsync with > compression, or scp, or ... you get the idea. i suspect that since i > didn't take advantage of compression, i'm currently being limited by > the throughput of the USB port and i'm currently doing it the slowest > way possible. I'd be using rsync -vaP so that subsequent updates are faster, but tar zcvf might be faster due to compression... but that depends on USB 2 vs 3, speed of CPUs... I prefer gzip over bzip, but I've not benchmarked them for optimization of compression ratio vs cpu bandwidth. > thoughts? > > rday slainte mhath, RGB -- Richard Guy Briggs -- ~\ -- ~\ <hpv.tricolour.ca> <www.TriColour.ca> -- \___ o \@ @ Ride yer bike! Ottawa, ON, CANADA -- Lo_>__M__\\/\%__\\/\% Vote! -- <greenparty.ca>_____GTVS6#790__(*)__(*)________(*)(*)_________________