-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On Sun, Jun 25, 2017 at 07:54:17PM +1000, John Elliot V wrote: > Hey there. Maybe someone can help me with this. > > I'm running Debian 9.0 (stretch). I have a few scripts which > periodically create and then move a file from my 1TB M.2 drive to a MD > RAID1 device comprised of 2x 6TB Seagate IronWolf drives. Full details > are here [1].
[...] > There seems to be plenty of RAM available, and plenty of CPU. So must be > some I/O thing..? Anyway, I'm a bit stumped. I haven't tried running the > mv command with nice, because it doesn't seem to be a CPU thing... but You might try to play around with ionice. Something along the lines of ionice -c 3 mv /this/path /that/path This would start the mv in the "idle" class (3), meaning it gets the I/O breadcrumbs other processes leave on the table. More or less. All of course untested. Consult the man page and move your pets to a safe place first :) Cheers - -- tomás -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iEYEARECAAYFAllPjN8ACgkQBcgs9XrR2kbDNQCfY3LVfiYJ91Yz18quc56c98Zy USQAnRITcx01FZnlPltPGg6xmCrR+qzE =Q1vL -----END PGP SIGNATURE-----
