Invalid memory stats from vmstat and sysctl vm.vmtotal?

[Steven Hartland]

----- Original Message ----- 
From: "Jason Hellenthal" <jhell at DataIX.net>
> Just to put some visuals to this...
> 
> .
> `-- DIE
>    |-- Core1  [Idle]
>    |-- Core2  [35% ]
>    |   `-- thread127
>    |-- Core3  [40% ]
>    |   `-- thread127
>    `-- Core4  [100%]
>        `-- thread127
>
> In this case you would say the DIE should be at a total of 175% ?

I think your getting confused there; it sounds like your referring to
a single CPU capable of multiple tasks via either multiple cores or
HTT as an UP machine? If so that's your problem this isn't UP it SMP.

Have a look on your machine in /var/run/dmesg.boot if your see
it reporting more than one core then your SMP not UP hence the
confusion as each of these cores be they real, virtual or physical
represents a possible thread of 100% so even if you have a single
physical CPU with 4 cores that still represents a possible total
of 400%

e.g the following shows a machine capable of 1600% if all cores
are busy.

FreeBSD/SMP: Multiprocessor System Detected: 16 CPUs
FreeBSD/SMP: 2 package(s) x 4 core(s) x 2 SMT threads
 cpu0 (BSP): APIC ID:  0
 cpu1 (AP): APIC ID:  1
 cpu2 (AP): APIC ID:  2
 cpu3 (AP): APIC ID:  3
 cpu4 (AP): APIC ID:  4
 cpu5 (AP): APIC ID:  5
 cpu6 (AP): APIC ID:  6
 cpu7 (AP): APIC ID:  7
 cpu8 (AP): APIC ID: 16
 cpu9 (AP): APIC ID: 17
 cpu10 (AP): APIC ID: 18
 cpu11 (AP): APIC ID: 19
 cpu12 (AP): APIC ID: 20
 cpu13 (AP): APIC ID: 21
 cpu14 (AP): APIC ID: 22
 cpu15 (AP): APIC ID: 23

If you want proper UP which will total 100% you could remove
SMP from your kernel but I wouldnt advise that ;-)

    Regards
    Steve

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