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jwalker
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Joined: 08 Jan 2004
Posts: 37
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 Posted: Tue Jan 13, 2004 6:17 am Post subject: hyper threading question |
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Is it possible to use hyper threading on a laptop (Dell Inspiron 8200) with a P4 1.6 GHz cpu? If I'm reading /proc/cpuinfo correctly, the processor supports it, but I feel sure it's not enabled. Any info on this?
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diebels
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Joined: 29 Aug 2003
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Location: Arendal, Norge
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jwalker
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Joined: 08 Jan 2004
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| Posted: Tue Jan 13, 2004 6:37 am Post subject: |
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Thanks, I was curious about that. Here's the contents of cpuinfo:
| Code: | jules openldap-data # cat /proc/cpuinfo
processor : 0
vendor_id : GenuineIntel
cpu family : 15
model : 2
model name : Intel(R) Pentium(R) 4 Mobile CPU 1.60GHz
stepping : 4
cpu MHz : 1595.361
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 sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm
bogomips : 3145.72 |
I just assumed the ht might mean hyper-threading.
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"Main reasons I came to Gentoo were that I wasn't happy with the technical merits of the RPM based distros and was put off by the elitist Debian attitude." |
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Janne Pikkarainen
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Joined: 29 Jul 2003
Posts: 1143
Location: Helsinki, Finland
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| Posted: Tue Jan 13, 2004 12:16 pm Post subject: |
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My Dell desktop box with P4 Celeron 2.0 GHz also claims to have Hyper-Threading, but as it's a Celeron, HT can't be enabled. I don't know if it's disabled & locked away in processor or motherboard level, but anyway.
| Code: |
processor : 0
vendor_id : GenuineIntel
cpu family : 15
model : 2
model name : Intel(R) Celeron(R) CPU 2.00GHz
stepping : 7
cpu MHz : 1992.695
cache size : 8 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
bogomips : 3971.48
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diebels
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Joined: 29 Aug 2003
Posts: 67
Location: Arendal, Norge
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| Posted: Tue Jan 13, 2004 8:02 pm Post subject: |
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Maybe it's possible to read the microcode from a ht enabled cpu, and write it to a ht disabled one?
That would be cool 
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http://anders.arendal.no |
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