Date: Wed, 29 Sep 2010 14:05:15 +1000 From: Jurgen Weber <jurgen@ish.com.au> To: borislav nikolov <vf1100c@gmail.com> Cc: "freebsd-stable@freebsd.org" <freebsd-stable@freebsd.org> Subject: Re: cpu timer issues Message-ID: <4CA2BAFB.60304@ish.com.au> In-Reply-To: <FC918FA4-770F-4F93-B179-F76BFFBFBD50@gmail.com> References: <4CA19F27.6050903@ish.com.au> <FC918FA4-770F-4F93-B179-F76BFFBFBD50@gmail.com>
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Interesting, using systat everything looks fine. The interrupts hang around 2000. Thanks Jurgen On 28/09/10 8:33 PM, borislav nikolov wrote: > Hello, > vmsat -i calculates interrupt rate based on interrupt count/uptime, and the interrupt count is 32 bit integer. > With high values of kern.hz it will overflow in few days (with kern.hz=4000 it will happen every 12 days or so). > If that is the case, use systat -vmstat 1 to get accurate interrupt rate. > That is just fyi, because i was confused once and it scared me abit, and i started changing counters untill i noticed this. > > p.s. please forgive my poor english -- --------------------------> ish http://www.ish.com.au Level 1, 30 Wilson Street Newtown 2042 Australia phone +61 2 9550 5001 fax +61 2 9550 4001
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