Date: Sat, 7 Jun 2014 14:53:05 -0700 From: Neel Natu <neelnatu@gmail.com> To: Peter Grehan <grehan@freebsd.org> Cc: "freebsd-virtualization@freebsd.org" <virtualization@freebsd.org> Subject: Re: interrupt storm on ahci Message-ID: <CAFgRE9HjUZE8T3djwD6_Mtw=riqdvM1VzZP0nfAn=F2jEonnAg@mail.gmail.com> In-Reply-To: <539383F3.2060307@freebsd.org> References: <20140607212440.GB3163@mouf.net> <539383F3.2060307@freebsd.org>
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Hi Steve, On Sat, Jun 7, 2014 at 2:28 PM, Peter Grehan <grehan@freebsd.org> wrote: > Hi Steve, > > >> I'm running a FreeBSD guest in bhyve on a FreeBSD host. Both are running >> FreeBSD CURRENT, r266947. I've gotten this message about 12 times since >> boot: >> >> interrupt storm detected on "irq268:"; throttling interrupt source >> >> vmstat -i shows: >> >> irq268: ahci1 236514222 839 >> >> ahci1 is the second disk connected to the system: >> >> ahci1: <Intel ICH8 AHCI SATA controller> mem 0xc0002400-0xc00027ff irq 18 >> at device 4.0 on pci0 >> >> The VM itself runs poudriere and was building a bunch of packages. At the >> moment, the VM seems to be in a rather odd state. The poudriere jails are >> running, but not doing anything. Ideas? > > > Is this an 8.* host ? I don't believe AHCI has MSI support on that version, > and AHCI legacy interrupts haven't had a huge amount of testing under load. > > If it is 8.*, I'd recommend using virtio-blk for the block device until we > can work out what's going wrong. > The KTR trace would be useful to figure out what's happening. To do that you can compile the host kernel and vmm.ko with the following options: options KTR options KTR_MASK=(KTR_GEN) options KTR_ENTRIES=(4*1024*1024) And when you see the interrupt storm message in the guest you can execute: sudo ktrdump -cto /tmp/ktrdump.out best Neel > later, > > Peter. > > > _______________________________________________ > freebsd-virtualization@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-virtualization > To unsubscribe, send any mail to > "freebsd-virtualization-unsubscribe@freebsd.org"
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