Date: Sat, 10 Jan 2015 12:52:57 +0100 From: Hans Petter Selasky <hps@selasky.org> To: Daniel Kolesa <quaker66@gmail.com>, Adrian Chadd <adrian@freebsd.org>, freebsd-usb@freebsd.org Subject: Re: Lynx Point USB - large amount of interrupts (300k / second) Message-ID: <54B11299.6040909@selasky.org> In-Reply-To: <CANVWg0gi0MgLR6iLhDU4oSBrt0bWkrfsOhC5R%2Bh_gveJruL86w@mail.gmail.com> References: <CANVWg0gi0MgLR6iLhDU4oSBrt0bWkrfsOhC5R%2Bh_gveJruL86w@mail.gmail.com>
next in thread | previous in thread | raw e-mail | index | archive | help
On 01/10/15 00:37, Daniel Kolesa wrote: > 2015-01-09 23:26 GMT+00:00 Daniel Kolesa <quaker66@gmail.com>: >> 2015-01-09 20:24 GMT+00:00 Adrian Chadd <adrian@freebsd.org>: >>> hi, >>> >>> I have a haswell desktop box at home: >>> >>> CPU: Intel(R) Core(TM) i5-4460 CPU @ 3.20GHz (3192.67-MHz K8-class CPU) >>> >>> With lynx point USB: >> >> Also Haswell here, but with H97 chipset, which means Wildcat Point >> USB. Not getting the issue. >> >>> >>> adrian@test-2:~ % dmesg | grep ehci >>> ehci0: <Intel Lynx Point USB 2.0 controller USB-B> mem >>> 0xf7f1c000-0xf7f1c3ff irq 16 at device 26.0 on pci0 >>> usbus1 on ehci0 >>> ehci1: <Intel Lynx Point USB 2.0 controller USB-A> mem >>> 0xf7f1b000-0xf7f1b3ff irq 23 at device 29.0 on pci0 >>> usbus2 on ehci1 >>> Hi, You can easily check who's generating the interrupts by setting: hw.usb.ehci.debug=16 hw.usb.xhci.debug=16 If the interrupt status is all-zero, then it is a bug somewhere else! --HPS
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?54B11299.6040909>