Date: Fri, 6 May 2011 08:36:52 -0700 From: Jack Vogel <jfvogel@gmail.com> To: Daan Vreeken <Daan@vehosting.nl> Cc: Steven Hartland <killing@multiplay.co.uk>, Current@freebsd.org, Peter Jeremy <peterjeremy@acm.org> Subject: Re: Interrupt storm with MSI in combination with em1 Message-ID: <BANLkTi=UJ_n-P%2BUO9aTk1Y2omUyPEbF3ow@mail.gmail.com> In-Reply-To: <201105061732.12418.Daan@vehosting.nl> References: <201105041734.50738.Daan@vehosting.nl> <201105061702.43073.Daan@vehosting.nl> <AF22429520FE47C694D6A647EEE48D8E@multiplay.co.uk> <201105061732.12418.Daan@vehosting.nl>
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I don't see why you are blaming em, you can see its on MSIX vectors that are NOT storming, its something with USB as noted. Trying to disable em from using MSIX is in exactly the wrong direction IMHO. Jack On Fri, May 6, 2011 at 8:32 AM, Daan Vreeken <Daan@vehosting.nl> wrote: > Hi Steven, > > On Friday 06 May 2011 17:20:15 Steven Hartland wrote: > > From: "Daan Vreeken" <Daan@vehosting.nl> > > > > > # vmstat -i > > > interrupt total rate > > > irq3: uart1 917384 63 > > > --> irq16: ehci0 809547235 55608 > > > > Have you tried removing USB from the kernel? > > > > USB seems to be a common course of this behaviour and here at least > > removing it from the kernel fixes in all cases assuming you don't > > need it for something? > > No, I haven't tried that yet. I could disable USB to run some tests, but > I'll > eventually need it enabled again. > I'll wait for a couple of hours to see if anyone can come up with a test to > run on the machine while the interrupt is still storming. After that I'll > reboot it with USB disabled. > > > Thanks, > -- > Daan Vreeken > VEHosting > http://VEHosting.nl > tel: +31-(0)40-7113050 / +31-(0)6-46210825 > KvK nr: 17174380 >
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