DragonflyBSD 6.2.1 very slow on Thinkpad T460

[karu.pruun]

> > You might have an interrupt storm! Run `systat -v` and look at the right
> > side for "Interrupts". The numbers should not be too high.
> >
>
> % systat -v
>                                                                  Interrupts
>    r   p   d   s  Csw  Trp  Sys  Int  Sof  Flt            cow   12034 total
>    1          21  12K    1 2063  13K  129    1    984.45M wire  12032 acpi0
>                                                   947.85M act         psm0
> 23.0%Sys   1.7%Intr  0.0%User  0.0%Nice 75.3%Idle 456.42M inact       xhci0
> |    |    |    |    |    |    |    |    |    |    926.96M cache       vgapci0
> ===========+                                       4.599G free        atkbd0
>                                                           daefr       ahci0
> Path-lookups   hits   %    Components Execs               prcfr       swi_mp_tas
>           10     10 100     2.80                          react     2 iwm0
>                                                           pdwake      swi_cambio
>
> You might be right, 12000 seems a bit too much.


I once had an interrupt storm on an i7 machine---same phenomena you're
describing, sluggish behavior. Updated BIOS and that solved it.

Best

Peeter

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