Am 10.03.2013 00:53, schrieb cosmoslx lin:> > 2013/3/10 Volker Armin Hemmann <[email protected] > <mailto:[email protected]>> > > Am 09.03.2013 19:15, schrieb Florian Philipp: > > Hi list! > > > > Whenever I do sequential IO for a long stretch of time (e.g. > md5summing > > 40 GB), I'm experiencing high load (ca. 6 on a 4 CPU system) and > > temporary freezes of most applications. For example, switching between > > tabs in konsole sometimes takes more than 2 seconds. > > [...] > > > congratulation. You hit 'the bug'. Been around for ages, but for magical > reasons kernel dev are unable to see or unable to do something about it. > If you are using a vanilla kernel, posting on lkml might be the right > thing to do. > > I have try the BFQ patch outside of the kernel mainline, it works well. > Maybe you would like to see: > http://algo.ing.unimo.it/people/paolo/disk_sched/ >
Thanks. I'll try pf-sources which should to include that patch set. Regards, Florian Philipp
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