From mboxrd@z Thu Jan  1 00:00:00 1970
From: "David S. Ahern" <daahern@cisco.com>
Subject: Re: high load with usb device
Date: Tue, 14 Sep 2010 09:51:27 -0600
Message-ID: <4C8F99FF.8060808@cisco.com>
References: <4C80E839.50604@msgid.tls.msk.ru> <4C8A1AE3.8030705@redhat.com> <4C8A2187.1020202@msgid.tls.msk.ru> <4C8A59FE.9090400@msgid.tls.msk.ru> <4C8C9CAA.9030203@redhat.com> <4C8F1B54.60604@msgid.tls.msk.ru> <4C8F3B00.3000703@redhat.com> <4C8F3BA7.7060302@redhat.com> <4C8F47A1.4030600@msgid.tls.msk.ru> <4C8F497C.7000904@redhat.com> <4C8F4DA8.50606@msgid.tls.msk.ru> <4C8F50E1.3060704@redhat.com> <4C8F563E.6070701@msgid.tls.msk.ru> <4C8F757D.1010509@msgid.tls.msk.ru> <4C8F77C1.90509@redhat.com> <4C8F78D6.2060808@msgid.tls.msk.ru> <4C8F8AA2.90403@redhat.com>
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Cc: Avi Kivity <avi@redhat.com>, KVM list <kvm@vger.kernel.org>
To: Michael Tokarev <mjt@tls.msk.ru>
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What's your clock source on the host?
cat /sys/devices/system/clocksource/clocksource0/current_clocksource

With the usbtablet device the host clock source is read 2-3 times for
frequently which for acpi_pm and hpet jack up the CPU.

David