Verifying that I have SMP up and running

[Michael K. Smith - Adhost]

Hello Jim:

> -----Original Message-----
> From: owner-freebsd-questions at freebsd.org [mailto:owner-freebsd-
> questions at freebsd.org] On Behalf Of Jim Stapleton
> Sent: Monday, April 09, 2007 2:52 PM
> To: freebsd-questions at freebsd.org
> Subject: Verifying that I have SMP up and running
> 
> I added SMP to the kernel config, but I want to make sure that it's
> running. I tried top, as I'm used to seeing multiple processors listed
> there (Tru64, Linux), but did not see it in FreeBSD. However I got the
> dmesg below (see end of mail, the beginning of dmesg output), which
> seems to indicate it's up an running. Can someone verify this, and are
> there any good tools to show how much each CPU is using in the way of
> resources?
> 
> Thanks,
> -Jim Stapleton
> 
> Copyright (c) 1992-2007 The FreeBSD Project.
> Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993,
> 1994
>         The Regents of the University of California. All rights
> reserved.
> FreeBSD is a registered trademark of The FreeBSD Foundation.
> FreeBSD 6.2-STABLE #0: Sun Apr  8 14:50:03 UTC 2007
>     root at elrond.ameritech.net:/usr/obj/usr/src/sys/JIM20070408-SMP
> Timecounter "i8254" frequency 1193182 Hz quality 0
> CPU: Dual Core AMD Opteron(tm) Processor 180 (2412.38-MHz 686-class
> CPU)
>   Origin = "AuthenticAMD"  Id = 0x20f32  Stepping = 2
> 
>
Features=0x178bfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PG
> E,MCA,CMOV,PAT,PSE36,CLFLUSH,MMX,FXSR,SSE,SSE2,HTT>
>   Features2=0x1<SSE3>
>   AMD Features=0xe2500800<SYSCALL,NX,MMX+,FFXSR,LM,3DNow+,3DNow>
>   AMD Features2=0x3<LAHF,CMP>
>   Cores per package: 2
> real memory  = 1073676288 (1023 MB)
> avail memory = 1033093120 (985 MB)
> ACPI APIC Table: <Nvidia AWRDACPI>
> FreeBSD/SMP: Multiprocessor System Detected: 2 CPUs
>  cpu0 (BSP): APIC ID:  0
>  cpu1 (AP): APIC ID:  1
> ioapic0: Changing APIC ID to 2
> ioapic0 <Version 1.1> irqs 0-23 on motherboard

You should be able to see both processors in top, under the "C" column.
You will see a 0 or 1 depending on which processor is doing the work for
that process.  There aren't cumulative, per-processor totals but you can
get a decent idea of what's going on.

Mike