Re: HP DL380p Gen8 interrupt storm

[Paul Goyette <paul%whooppee.com@localhost>]

Try booting with the CD drive disabled (via userconf)



On Fri, 3 Sep 2021, Havard Eidnes wrote:

> Hi,
>
> one machine I'm testing NetBSD on feels sort of sluggish, which
> is strange because it's got lots of RAM (128GB) and a pair of
> Xeon(R) CPU E5-2650 CPUs, for a total of 16 physical cores and 32
> with hyperthreading.
>
> It looks like one of the CPUs is using most of its time doing
> interrupt processing, "systat vm" often shows ***** in "Intr" and
> I have a constant buzz of 6.3% System CPU:
>
> Proc:r  d  s        Csw  Traps SysCal  Intr   Soft  Fault     PAGING   SWAPPING
>     1     7        557    281    355 *****     64    277     in  out   in  out
>                                                        ops
>   6.3% Sy   0.0% Us   0.0% Ni   0.1% In  93.6% Id    pages
> |    |    |    |    |    |    |    |    |    |    |
> ===                                                                     2 forks
>                                                                        2 fkppw
> Checking further:
>
> stest: {8} vmstat -i
> interrupt               total   rate
> TLB shootdown         4677209      0
> cpu0 timer         1046424629     99
> msix2 vec 0          62702425      5
> msix6 vec 0           3294854      0
> ioapic0 pin 21             84      0
> ioapic0 pin 20       21074226      2
> ioapic0 pin 17  3344590700017 319462
> ioapic0 pin 4           12722      0
> Total           3345728886166 319570
>
> stest: {9} grep 'ioapic0 pin 17' /var/run/dmesg.boot
> pciide0: using ioapic0 pin 17 for native-PCI interrupt
> stest: {10}
>
> pciide0 only has the built-in CD drive, if I see correctly.
>
> Full dmesg attached below.
>
> Any hints about what's going on and how to further diagnose and
> eventually cure it?
>
> Regards,
>
> - Håvard
>
>
> !DSPAM:61324ecd137045439215331!

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