Date: Wed, 28 Jan 2004 13:25:13 -0600 From: Kevin Day <toasty@dragondata.com> To: freebsd-net@freebsd.org Subject: DEVICE_POLLING with SMP Message-ID: <B2508BB3-51C7-11D8-B168-000A95A8A1F2@dragondata.com>
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Has anyone made any headway with getting polling(4) to work with a SMP kernel? Last May this was discussed on here briefly with me, Luigi and Don Bowman, which seemed to indicate that the majority of what needed to be fixed to make this work would be some kind of locking in idle_loop to make sure only one CPU gets into the polling code at once. I've got a case where enabling SMP gives me a 20-30% performance boost, or if I turn polling on I get another 10-15% boost. I'd love to see what the two together could do.
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