to hyperthread or not to hyperthread

Mike Tancsa mike at
Fri Dec 19 14:20:32 PST 2003

We are replacing a box that is fairly busy with many different processes 
(sendmail / pop3).  The new MB and CPU is hyperthreading capable. Is it 
worth it to enable this ?  Does anyone have any real world experiences with 
it in RELENG_4 that say one way or the other to use or not use it ?

dmesg shows,

CPU: Intel(R) Pentium(R) 4 CPU 3.00GHz (2992.52-MHz 686-class CPU)
   Origin = "GenuineIntel"  Id = 0xf29  Stepping = 9
   Hyperthreading: 2 logical CPUs

Mike Tancsa,                          	          tel +1 519 651 3400
Sentex Communications,     			  mike at
Providing Internet since 1994          
Cambridge, Ontario Canada

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