On Thu, Feb 17, 2011 at 12:37 PM, Joe Talbott <[email protected]> wrote:
> On Thu, Feb 17, 2011 at 12:41:55PM -0500, Saman Barghi wrote:
> > Hi,
> > I wanted to know if DragonFlyBSD supports Hyper threading or not. I did
> some
> > benchmarking recently and it seems that on a Xeon dual core with 2
> virtual
> > cpu per core, DFBSD only scale to 2 threads and after that the number of
> > transactions/second dorps (using sysbench oltp). So does that mean DFBSD
> > does not support Hyperthreading !? If that is the case, I need to perform
> > the benchmarks on a different machine without hyper threading. Please
> kindly
> > advise.
>
> HyperThreading is certainly supported. Do you have an SMP kernel
> installed? Perhaps your dmesg output would be helpful.
>
> Thanks,
> Joe
>
Isn't it enabled by default?! I thought it is. Anyway, Here is the dmseg
output. Please enlighten me and let me know how I can enable SMP as it seems
it is not enabled from the dmesg.
=============== dmesg.today ==================
Copyright (c) 2003-2010 The DragonFly Project.
Copyright (c) 1992-2003 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.
DragonFly v2.8.2-RELEASE #2: Fri Oct 29 01:29:56 PDT 2010
[email protected]:/usr/obj/usr/src-misc/sys/GENERIC
TSC clock: 3066101012 Hz, i8254 clock: 1193301 Hz
CPU: Intel(R) Xeon(TM) CPU 3.06GHz (3065.81-MHz 686-class CPU)
Origin = "GenuineIntel" Id = 0xf25 Stepping = 5
Features=0xbfebfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CLFLUSH,DTS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE>
Features2=0x4400<CNXT-ID,xTPR>
Logical CPUs per core: 2
real memory = 2146497536 (2047 MB)
avail memory = 2062565376 (1967 MB)
module_register: module pci/ahci already exists!
Module pci/ahci failed to register: 17
FQ scheduler policy version 1.0 loaded
No policy for md0 specified, or policy not found
disk scheduler: set policy of md0 to noop
