Date: Sat, 09 May 2009 14:45:07 -0700 From: perryh@pluto.rain.com To: onemda@gmail.com Cc: freebsd-questions@freebsd.org Subject: Re: how to fix "interrupt storm" Message-ID: <4a05f963.OI3CMfJ3/j2hbi4D%perryh@pluto.rain.com> In-Reply-To: <3a142e750905090746g5324d8ffl1ea10645c0e5f45c@mail.gmail.com> References: <4a04702a.ZaIfHAUzw/YexVK2%perryh@pluto.rain.com> <3a142e750905090746g5324d8ffl1ea10645c0e5f45c@mail.gmail.com>
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"Paul B. Mahol" <onemda@gmail.com> wrote: > On 5/8/09, perryh@pluto.rain.com <perryh@pluto.rain.com> wrote: > > What, exactly, is an "interrupt storm", and how do I fix it? ... > > interrupt storm detected on "irq9:"; throttling interrupt source > > interrupt storm detected on "irq9:"; throttling interrupt source > > interrupt storm detected on "irq9:"; throttling interrupt source > > interrupt storm detected on "irq9:"; throttling interrupt source > > interrupt storm detected on "irq9:"; throttling interrupt source > > ad6: FAILURE - SET_MULTI status=51<READY,DSC,ERROR> error=4<ABORTED> > > ad6: TIMEOUT - READ_DMA retrying (1 retry left) LBA=136936 > > > > etc. etc. until I killed it with ^C. (Just entering "q", to cause > > more(1) to exit and presumably stop od(1) with a SIGPIPE, did not > > stop the spew of messages.) > > > > What does this indicate? Hardware problems? Bad configuration? > > Something else? > > Output of "vmstat -i"? $ vmstat -i interrupt total rate irq0: clk 497386851 1004 irq1: atkbd0 2491 0 irq3: xl0 2030 0 irq6: fdc0 11 0 irq7: ppbus0 ppc0 1 0 irq8: rtc 63654324 128 irq9: uhci0+ 166216 0 irq14: ata0 369620 0 irq15: ata1 691 0 Total 561582235 1133
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