[Asterisk-Users] Hyperthreading?

[Troy Settle]

# uname -a
Linux roanoke-voip01 2.4.25-gentoo-r2 #6 SMP Mon May 31 07:08:41 EDT 2004
i686 Intel(R) Pentium(R) 4 CPU 2.80GHz GenuineIntel GNU/Linux

# cat /proc/cpuinfo 
processor       : 0
vendor_id       : GenuineIntel
cpu family      : 15
model           : 2
model name      : Intel(R) Pentium(R) 4 CPU 2.80GHz
stepping        : 9
cpu MHz         : 2793.042
cache size      : 512 KB
fdiv_bug        : no
hlt_bug         : no
f00f_bug        : no
coma_bug        : no
fpu             : yes
fpu_exception   : yes
cpuid level     : 2
wp              : yes
flags           : 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 ht tm pbe cid
bogomips        : 5570.56

# dmesg | grep -i cpu
Initializing CPU#0
CPU: Trace cache: 12K uops, L1 D cache: 8K
CPU: L2 cache: 512K
CPU: Physical Processor ID: 0
Intel machine check reporting enabled on CPU#0.
CPU:     After generic, caps: bfebfbff 00000000 00000000 00000000
CPU:             Common caps: bfebfbff 00000000 00000000 00000000
CPU: Trace cache: 12K uops, L1 D cache: 8K
CPU: L2 cache: 512K
CPU: Physical Processor ID: 0
Intel machine check reporting enabled on CPU#0.
CPU:     After generic, caps: bfebfbff 00000000 00000000 00000000
CPU:             Common caps: bfebfbff 00000000 00000000 00000000
CPU0: Intel(R) Pentium(R) 4 CPU 2.80GHz stepping 09
per-CPU timeslice cutoff: 1462.56 usecs.
enabled ExtINT on CPU#0
WARNING: No sibling found for CPU 0.
..... CPU clock speed is 2793.1604 MHz.
cpu: 0, clocks: 1995112, slice: 997556
CPU0<T0:1995104,T1:997536,D:12,S:997556,C:1995112>


--
  Troy Settle
  Pulaski Networks
  http://www.psknet.com
  866.477.5638
 

> -----Original Message-----
> From: asterisk-users-admin at lists.digium.com 
> [mailto:asterisk-users-admin at lists.digium.com] On Behalf Of 
> Andrew Kohlsmith
> Sent: Tuesday, June 01, 2004 9:16 AM
> To: asterisk-users at lists.digium.com
> Subject: Re: [Asterisk-Users] Hyperthreading?
> 
> > I'm running asterisk on a 2.8Ghz w/HT and 2.4.25 kernel.  I 
> wasn't aware
> > that I needed to disable HT, but all seems to be running ok 
> for now.  The
> > 2.4.x kernel seems to be completely ignorant of hyper 
> threading, which IMO,
> > is quite frustrating.  HTT has been around for years now, 
> and 2.4 kernels
> > still can't use it.
> 
> They can't?  HT is detected in /proc/cpuinfo (flags) and I 
> see two processors 
> with 2.4.25 SMP kernels...  What exactly isn't it using?
> 
> Regards,
> Andrew
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