Simon Josefsson <[EMAIL PROTECTED]> writes: > Frequently when I want to run a long-running I/O-bound job (i.e., > rsync of the entire disk to a second disk) on a busy machine (i.e., > mail and web server), the load increases to ~10 from a normal <1.
Assuming you are running on Linux, this is because there are about 10 processes waiting for disk I/O. > Using 'nice' doesn't help. I don't know why this is, but I suspect > the kernel scheduler is sub-optimal for disk-bound jobs. You probably want to change the I/O scheduling class for the process. This can be done with ionice (which is Linux specific, included in the util-linux package at least on SL 10.1). Andreas. -- Andreas Schwab, SuSE Labs, [EMAIL PROTECTED] SuSE Linux Products GmbH, Maxfeldstraße 5, 90409 Nürnberg, Germany PGP key fingerprint = 58CA 54C7 6D53 942B 1756 01D3 44D5 214B 8276 4ED5 "And now for something completely different." _______________________________________________ Bug-coreutils mailing list Bug-coreutils@gnu.org http://lists.gnu.org/mailman/listinfo/bug-coreutils
