Darac Marjal wrote at 2013-02-28 10:50 -0600: > On Thu, Feb 28, 2013 at 11:38:23AM -0500, m...@neidorff.com wrote: > > Yes. You may want to change the "nice" level of the tar command so that > > it doesn't take up so much disk time. > > "nice tar" won't actually change how heavily tar uses the disk. Instead > try "ionice -c3 tar" (or "nice ionice -c3 tar" if you want it to use > less[*] CPU /and/ disk).
According to ionice(1), if the ionice level is not set, it is inherited from the nice level. Therefore it is adequate to use `nice` only. Unless I do not understand it correctly. "For kernels after 2.6.26 with the CFQ I/O scheduler, a process that has not asked for an I/O priority inherits its CPU scheduling class. The I/O priority is derived from the CPU nice level of the process (same as before kernel 2.6.26)."
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