Date: Mon, 6 Oct 2003 20:09:29 +0700 From: "Michael O. Boev" <mike@tric.tomsk.gov.ru> To: "Sergey 'DoubleF' Zaharchenko" <doublef@tele-kom.ru> Cc: freebsd-questions@FreeBSD.ORG Subject: RE: Why is em nic generating interrupts? Message-ID: <MOEOKMEIFPGOADALOHONOEHPCHAA.mike@tric.tomsk.gov.ru> In-Reply-To: <20031006170125.7fbb796c.doublef@tele-kom.ru>
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Hi again! As of 5.1 (which, forgive my not mentioning it, I use), em is included in that list. > -----Original Message----- > From: Sergey 'DoubleF' Zaharchenko [mailto:doublef@tele-kom.ru] > Sent: Tuesday, October 07, 2003 12:01 AM > To: Michael O. Boev > Cc: freebsd-questions@FreeBSD.ORG > Subject: Re: Why is em nic generating interrupts? > > > On Mon, 6 Oct 2003 19:48:53 +0700 "Michael O. Boev" > <mike@tric.tomsk.gov.ru> probably wrote: > > > Hello, everyone! > > Hi! > > > I've got a [uniprocessor] router machine with fxp and em nics. > > I've built my kernel with the following included: > > > > options DEVICE_POLLING > > options HZ=2500 > > > > and enabled polling in /etc/sysctl.conf. > > > > Having looked through a vmstat -i output I see > > that the em card is generating interrupts, although > > they should be disabled (as I see in em's source code). > > > > interrupt total rate > > stray irq0 1 0 > > stray irq6 1 0 > > npx0 irq13 1 0 > > ata0 irq14 2339 0 > > em0 irq10 421457 155 > > fxp0 irq5 2 0 > > atkbd0 irq1 3326 1 > > clk irq0 6778872 2500 > > rtc irq8 346899 127 > > Total 7552898 2786 > > > > What's happening? Is polling working in my case? > > If yes, why is vmstat showing interrupts? I see clearly, > > that fxp's counter doesn't increase, and em's is constantly growing. > > Assuming you are using 4.8, > > \From the polling manpage: > > > As of this writing, the dc, fxp, rl and sis devices are > supported, with > >other in the works. > > I guess em is just not there yet, while fxp is... > > HTH > -- > DoubleF > "All flesh is grass" > -- Isiah > Smoke a friend today. >
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