Date: Mon, 5 Nov 2012 07:29:31 +0100 From: Davide Italiano <davide@freebsd.org> To: Joe Holden <lists@rewt.org.uk> Cc: current@freebsd.org Subject: Re: Dynamic Ticks/HZ Message-ID: <CACYV=-HwJ1j2-zDtCtuGNKzdFRJhPsZm6vtFXAVyPSabCXvFEQ@mail.gmail.com> In-Reply-To: <509758B8.1000409@rewt.org.uk> References: <509758B8.1000409@rewt.org.uk>
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On Mon, Nov 5, 2012 at 7:12 AM, Joe Holden <lists@rewt.org.uk> wrote: > Hi guys, > > Has some default changed between 9.1-RC2 and HEAD? > > On identical machines, one with 9.1-RC2 and one with HEAD from yesterday > (GENERIC) I see the following in systat -v: > > 9.1: > 65 cpu0:timer > 10 cpu1:timer > > HEAD: > 1127 cpu0:timer > 22 cpu1:timer > > These are Supermicro i3 boxes and as far as I can see they have matching > BIOS config. > > Thanks, > J > _______________________________________________ > freebsd-current@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-current > To unsubscribe, send any mail to "freebsd-current-unsubscribe@freebsd.org" Which is your refresh rate for systat? I generally measure sampling every one second (i.e. systat -vm 1). Also, are you making your measurements when the system is idle? In order to trace the source(s) of these interrupts you might consider to collect data via KTR. -- Davide
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