* Re: /proc/cpuinfo & top
2003-10-27 21:31 ` /proc/cpuinfo & top Yaoping Ruan
@ 2003-10-27 21:53 ` Zwane Mwaikambo
2003-10-27 21:57 ` Bruce Harada
2003-10-27 22:00 ` Michael Buesch
2 siblings, 0 replies; 4+ messages in thread
From: Zwane Mwaikambo @ 2003-10-27 21:53 UTC (permalink / raw)
To: Yaoping Ruan; +Cc: linux-kernel
On Mon, 27 Oct 2003, Yaoping Ruan wrote:
> Hi,
>
> I compiled 2.4.21 kernel with SMP and High-MEM enabled on a dual-CPU box,
> but surprised to see there're 4 CPUs in /proc/cpuinfo and top. But
> /proc/cpuinfo is correct if SMP is disable during kernel configuration.
> Did anybody experience this before?
Pretty much an FAQ by now, but here it is from the horse's mouth;
http://www.intel.com/products/ht/hyperthreading_more.htm
http://www.intel.com/products/ht/hyperthreading.htm?iid=ipp_htm+ht&
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: /proc/cpuinfo & top
2003-10-27 21:31 ` /proc/cpuinfo & top Yaoping Ruan
2003-10-27 21:53 ` Zwane Mwaikambo
@ 2003-10-27 21:57 ` Bruce Harada
2003-10-27 22:00 ` Michael Buesch
2 siblings, 0 replies; 4+ messages in thread
From: Bruce Harada @ 2003-10-27 21:57 UTC (permalink / raw)
To: Yaoping Ruan; +Cc: linux-kernel
On Mon, 27 Oct 2003 16:31:40 -0500 (EST)
Yaoping Ruan <yruan@CS.Princeton.EDU> wrote:
> Hi,
>
> I compiled 2.4.21 kernel with SMP and High-MEM enabled on a dual-CPU box,
> but surprised to see there're 4 CPUs in /proc/cpuinfo and top. But
> /proc/cpuinfo is correct if SMP is disable during kernel configuration.
> Did anybody experience this before?
P4s with HT by any chance?
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: /proc/cpuinfo & top
2003-10-27 21:31 ` /proc/cpuinfo & top Yaoping Ruan
2003-10-27 21:53 ` Zwane Mwaikambo
2003-10-27 21:57 ` Bruce Harada
@ 2003-10-27 22:00 ` Michael Buesch
2 siblings, 0 replies; 4+ messages in thread
From: Michael Buesch @ 2003-10-27 22:00 UTC (permalink / raw)
To: Yaoping Ruan; +Cc: linux kernel mailing list
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On Monday 27 October 2003 22:31, Yaoping Ruan wrote:
> Hi,
Hi,
> I compiled 2.4.21 kernel with SMP and High-MEM enabled on a dual-CPU box,
> but surprised to see there're 4 CPUs in /proc/cpuinfo and top. But
> /proc/cpuinfo is correct if SMP is disable during kernel configuration.
> Did anybody experience this before?
Is it a dual HT system? Two HyperThreaded CPUs should become
4 virtual CPUs.
> Many thanks in advance
>
> - Yaoping Ruan
- --
Regards Michael Buesch [ http://www.tuxsoft.de.vu ]
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^ permalink raw reply [flat|nested] 4+ messages in thread