11.10.10, 12:13, "Claudio Jeker" <cje...@diehard.n-r-g.com>:

>  You try to renice I/O bound
>  processes. The scheduler priority only matters when processes are CPU
>  bound.
  
Yes of course, but... all my  "dd" processes use CPU. 
After run "dd if=/dev/urandom of=/dev/null"
first three "dd if=/dev/wd0c of=/dev/null bs=1m" reduce their part of CPU and 
run "renice" not recover their part of CPU.

-- 
Dmitry Telegin

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