Date: Tue, 5 Nov 2013 15:07:03 +0100 From: Oliver Pinter <oliver.pntr@gmail.com> To: freebsd-stable@freebsd.org, current@freebsd.org Cc: davide@freebsd.org, mav@freebsd.org Subject: [10-STABLE, 11-CURRENT] something wrong between cam and eventtimer or geom and eventtimer Message-ID: <CAPjTQNF5Q=sPaTSpjnwpVOjiM9e70T0ve-GQ71Sv0zHx_Az7dg@mail.gmail.com>
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Hi all! The machine is a Haswell machine, the disc performance was very poor (20-30MByte/sec). When I change the kern.eventtimer.idletick from 0 to 1, the normal performance restored back to normal (70-90MByte/sec). The default eventtimer was LAPIC. On other machine Q9300, this was fully reproducible.
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