Date: Mon, 6 Oct 2003 17:01:25 +0000 From: Sergey 'DoubleF' Zaharchenko <doublef@tele-kom.ru> To: "Michael O. Boev" <mike@tric.tomsk.gov.ru> Cc: freebsd-questions@FreeBSD.ORG Subject: Re: Why is em nic generating interrupts? Message-ID: <20031006170125.7fbb796c.doublef@tele-kom.ru> In-Reply-To: <GFEGLCJPLEIINPCCACNGIEFNCAAA.mike@tric.tomsk.gov.ru> References: <GFEGLCJPLEIINPCCACNGIEFNCAAA.mike@tric.tomsk.gov.ru>
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--=.mLQt.'uHJYQes4 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit 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. --=.mLQt.'uHJYQes4 Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.3 (FreeBSD) iD8DBQE/gZ/xwo7hT/9lVdwRAvl3AJ0dt2dsEVoKNQOgf3SK3DQQ/HgH3wCeP7m0 Xt97TzhYyNHQMO3U3jsvh1k= =qxYb -----END PGP SIGNATURE----- --=.mLQt.'uHJYQes4--
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