Re: Crashes on X7SPE-HF with em

Jack Vogel wrote:
> 
> 
> On Thu, Aug 26, 2010 at 3:15 PM, Jeremy Chadwick
> <[e-mail] <mailto:[e-mail]>> wrote:
> 
>     On Thu, Aug 26, 2010 at 11:56:48PM +0200, Philipp Wuensche wrote:
>     > Jeremy Chadwick wrote:
>     > >
>     > > CC'ing Jack Vogel of Intel and Yong-Hyeon PYUN who might have some
>     > > ideas.  OP's backtrace is here:
>     > >
>     > >
>     http://lists.freebsd.org/pipermail/freebsd-stable/2010-August/058425.html
>     > >
>     > > Philipp, can you please provide the following output?
>     > >
>     > > * dmesg | egrep 'em[0-9]'
>     >
>     > em0: <Intel(R) PRO/1000 Network Connection 7.0.5> port
>     0xdc00-0xdc1f mem
>     > 0xfe9e0000-0xfe9fffff,0xfe9dc000-0xfe9dffff irq 16 at device 0.0
>     on pci2
>     > em0: Using MSI interrupt
>     > em0: [FILTER]
>     > em0: Ethernet address: 00:25:90:04:6e:fa
>     > em1: <Intel(R) PRO/1000 Network Connection 7.0.5> port
>     0xec00-0xec1f mem
>     > 0xfeae0000-0xfeafffff,0xfeadc000-0xfeadffff irq 17 at device 0.0
>     on pci3
>     > em1: Using MSI interrupt
>     > em1: [FILTER]
>     > em1: Ethernet address: 00:25:90:04:6e:fb
>     >
>     > > * uname -a         (you can XXX out the machine name if need be)
>     >
>     > FreeBSD XXX 8.1-STABLE FreeBSD 8.1-STABLE #2: Wed Aug 25 10:38:50 CEST
>     > 2010     root@XXX:/usr/obj/usr/src/sys/XXX  amd64
>     >
>     > Date of source is Aug 17 14:09 CEST 2010. It happend with 8.1-RELEASE
>     > too, I can go back to RELEASE or any SVN revision you would like,
>     if it
>     > is helping in any way.
>     >
>     > Kernel-config:
>     >
>     > include         GENERIC
>     >
>     > ident           XXX
>     >
>     > options         IPSEC
>     >
>     > options       DEVICE_POLLING
>     > options     ACCEPT_FILTER_HTTP
>     >
>     > options ALTQ
>     >
>     > options ALTQ_CBQ
>     > options ALTQ_RED
>     > options ALTQ_RIO
>     > options ALTQ_HFSC
>     > options ALTQ_PRIQ
>     >
>     > device                crypto
>     > device                enc
>     >
>     >
>     > > * pciconf -lvc     (only include the em(4) items please)
>     >
>     > em0@pci0:2:0:0:       class=0x020000 card=0x060a15d9
>     chip=0x10d38086 rev=0x00
>     > hdr=0x00
>     >     vendor     = 'Intel Corporation'
>     >     device     = 'Intel 82574L Gigabit Ethernet Controller (82574L)'
>     >     class      = network
>     >     subclass   = ethernet
>     >     cap 01[c8] = powerspec 2  supports D0 D3  current D0
>     >     cap 05[d0] = MSI supports 1 message, 64 bit enabled with 1 message
>     >     cap 10[e0] = PCI-Express 1 endpoint max data 128(256) link x1(x1)
>     >     cap 11[a0] = MSI-X supports 5 messages in map 0x1c
>     > em1@pci0:3:0:0:       class=0x020000 card=0x060a15d9
>     chip=0x10d38086 rev=0x00
>     > hdr=0x00
>     >     vendor     = 'Intel Corporation'
>     >     device     = 'Intel 82574L Gigabit Ethernet Controller (82574L)'
>     >     class      = network
>     >     subclass   = ethernet
>     >     cap 01[c8] = powerspec 2  supports D0 D3  current D0
>     >     cap 05[d0] = MSI supports 1 message, 64 bit enabled with 1 message
>     >     cap 10[e0] = PCI-Express 1 endpoint max data 128(256) link x1(x1)
>     >     cap 11[a0] = MSI-X supports 5 messages in map 0x1c
>     >
>     > > * vmstat -i
>     >
>     > interrupt                          total       rate
>     > irq1: atkbd0                           9          0
>     > cpu0: timer                     36544552       1994
>     > irq256: em0                         3801          0
>     > irq257: em1                     32963909       1799
>     > irq258: ahci0                     175662          9
>     > cpu1: timer                     36543525       1994
>     > cpu2: timer                     36543525       1994
>     > cpu3: timer                     36543525       1994
>     > Total                          179318508       9786
>     >
>     > There is an shared IPMI interface on em0, but the interface is not
>     used
>     > by FreeBSD. em1 is used by four VLANs. Polling is only in the
>     > Kernelconfig, not activated on the devices.
> 
>     So much complexity here.  Tracking this down might be difficult.
> 
>     One thing that does concern me is the interrupt rate for em1.  Jack et
>     al, is this normal?  I don't see this behaviour on my 8.x systems with
>     em(4) driver 7.0.5, but my systems all use 82573E and 82573L, and don't
>     have MSI-X support.
> 
> 
> He is only using one vector anyway it seems, so MSIX isnt making things
> much more complex than your 573.
> 
> The interrupt rate seems high but I'm not sure if its abnormal for a busy
> interface.
> 
> I tend to agree with Yongari, let's eliminate all the complicating factors
> like IPSEC and ALTQ and see if it still occurs.

Crashed couply of minutes ago, the kernel without ALTQ and IPSEC is now
running.

greetings,
philipp
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