vmstat -i shows strange interrupts

[Mark Cullen]

Matthew Dillon wrote:
:
:Hi there, got it installed :-)
:
:...
:-- vmstat --
:beast# vmstat -i
:interrupt                   total       rate
:???                             0          0
:stray irq0                      0          0
:stray irq1                      0          0
:stray irq2                      0          0
:stray irq3                      0          0
:stray irq4                      0          0
:stray irq5                      0          0
:...
:mux irq11                   42624         13
:atkbd0 irq1                  3361          1
:psm0 irq12                      0          0
:sio0 irq4                       0          0
:sio1 irq3                       0          0
:ppc0 irq7                       0          0
:clk irq0                   698586        226
:Total                      814148        263
:--
:
:What's with all the strange stray's? Is this normal? It doesn't seem to 

    Yes, it's normal.  Notice all the counts are 0 ?  The stray interrupts
    are placeholders for unassigned and alternative irq vectors.   This is
    especially true for systems with APICs because we use a different vector
    number for SLOW vs FAST interrupts on the same irq.
Nothing to worry about then :)

:be affecting much but then it doesn't look quite right either. Where's 
:my fxp0 card too! Is this perhaps an ACPI issue? All I can think of 

    The fxp0 card is in the 'mux' slot for irq 11, along with other cards
    sharing that interrupt.  vmstat -I is simply not traversing the MUX list
    or the sysctl isn't generating it, or something like that.
I figured maybe it was the mux one a minute ago. Don't actually know 
what mux is, but I had a look at my dmesg and saw my fxp card was using 
IRQ 11.

					-Matt
					Matthew Dillon 
					<dillon at xxxxxxxxxxxxx>


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