It looks just like my hyperthreaded unit.  I thought I had to turn on
hyperthreading from the BIOS.  Hyperthreading works very slick under a smp
kernel for any compile type use.  When creating a mp3 through lame single
processor kernel would run at 1-2x playback speed and under hyperthreading
the speed increased to 10-12x playback speed.

Jeff Rasmussen


-----Original Message-----
From: Thomas Johnson [mailto:john4293 at tc.umn.edu]
Sent: Thursday, August 05, 2004 5:14 PM
To: TCLUG
Subject: [TCLUG] is this a hyperthreading CPU


last week Dell replaced the motherboard/CPU in my notebook (Inspiron 5150,
non-HT 3.06Ghz). I was doing puttering around in winxp and noticed that that
the device manager shows two processors. so i flipped into bios and there is
now a setting to enable hyperthreading as well as the P4 w/ HT logo on the
splash screen. in linux /proc/cpuinfo shows the following:

# cat /proc/cpuinfo 
processor       : 0
vendor_id       : GenuineIntel
cpu family      : 15
model           : 2
model name      : Mobile Intel(R) Pentium(R) 4     CPU 3.06GHz
stepping        : 9
cpu MHz         : 3056.542
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        : 6094.84

also, /proc/acpi/processor/ now has a CPU1 directory in addition to CPU0.
does this mean Dell slipped me a newer unit with HT?

Thomas Johnson
--------------
john4293 at umn dot edu
763.458.9071 (cell)
--------------
* if it's not broken, i haven't worked hard enough.
* there is little truth in men but much cunning. -peter the great

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_______________________________________________
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