Dear Claudius, On 2013-02-28 16:39:23 +0000, Claudius Hubig wrote: > Vincent Lefevre wrote: > > the whole machine becomes unresponsive, e.g. several dozens of seconds > > to do some operation (e.g. starting an xterm, or making Firefox react)? > > Depending on the IO priority of the tar command (probably higher if > run as root, check with ionice) and the disk access scheduler > (cat /sys/block/sda/queue/scheduler), this may vary wildly.
I forgot to answer this one: $ cat /sys/block/sda/queue/scheduler noop deadline [cfq] So, CFQ is selected, and if I understand the doc, it should introduce some fairness. But this is not what I could see. Also I don't really understand the relation between the scheduler and the ionice class. Is the goal of ionice to change the scheduling policy? Otherwise how do they interact? -- Vincent Lefèvre <[email protected]> - Web: <http://www.vinc17.net/> 100% accessible validated (X)HTML - Blog: <http://www.vinc17.net/blog/> Work: CR INRIA - computer arithmetic / AriC project (LIP, ENS-Lyon) -- To UNSUBSCRIBE, email to [email protected] with a subject of "unsubscribe". Trouble? Contact [email protected] Archive: http://lists.debian.org/[email protected]
