Date: Sun, 23 Apr 2006 14:01:33 GMT From: Attila Nagy <bra@fsn.hu> To: freebsd-gnats-submit@FreeBSD.org Subject: i386/96203: FreeBSD recognizes Intel LV dual core Xeon (sossaman) as a one core CPU with a hyperthread virtual CPU Message-ID: <200604231401.k3NE1XwE042481@www.freebsd.org> Resent-Message-ID: <200604231410.k3NEADDs054205@freefall.freebsd.org>
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>Number: 96203
>Category: i386
>Synopsis: FreeBSD recognizes Intel LV dual core Xeon (sossaman) as a one core CPU with a hyperthread virtual CPU
>Confidential: no
>Severity: non-critical
>Priority: low
>Responsible: freebsd-i386
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Sun Apr 23 14:10:12 GMT 2006
>Closed-Date:
>Last-Modified:
>Originator: Attila Nagy
>Release: 6.1-RC
>Organization:
>Environment:
FreeBSD 6.1-RC #0: Fri Apr 21 23:29:17 CEST 2006
>Description:
FreeBSD recognizes Intel's dual core, low voltage Xeon processors (sossaman) as a single core processor with a virtual CPU. Because hyperthreading is disabled by default, there are no processes scheduled to the extra cores.
Copyright (c) 1992-2006 The FreeBSD Project.
Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
The Regents of the University of California. All rights reserved.
FreeBSD 6.1-RC #0: Fri Apr 21 23:29:17 CEST 2006
root@sossaman:/usr/obj/usr/src/sys/SMP
Timecounter "i8254" frequency 1193182 Hz quality 0
CPU: Intel(R) Dual Pentium(R) M CPU 000 @ 2.00GHz (2000.15-MHz 686-class CPU)
Origin = "GenuineIntel" Id = 0x6e4 Stepping = 4
Features=0xbfebfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,C
MOV,PAT,PSE36,CLFLUSH,DTS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE>
Features2=0x41a9<SSE3,MON,VMX,EST,TM2,<b14>>
AMD Features=0x100000<NX>
Hyperthreading: 2 logical CPUs
real memory = 2147352576 (2047 MB)
avail memory = 2096332800 (1999 MB)
ACPI APIC Table: <A M I OEMAPIC >
FreeBSD/SMP: Multiprocessor System Detected: 4 CPUs
cpu0 (BSP): APIC ID: 0
cpu1 (AP): APIC ID: 1
cpu2 (AP): APIC ID: 6
cpu3 (AP): APIC ID: 7
ioapic0 <Version 2.0> irqs 0-23 on motherboard
ioapic1 <Version 2.0> irqs 24-47 on motherboard
kbd1 at kbdmux0
npx0: [FAST]
npx0: <math processor> on motherboard
npx0: INT 16 interface
acpi0: <A M I OEMRSDT> on motherboard
acpi0: Power Button (fixed)
Timecounter "ACPI-fast" frequency 3579545 Hz quality 1000
acpi_timer0: <24-bit timer at 3.579545MHz> port 0x408-0x40b on acpi0
cpu0: <ACPI CPU> on acpi0
acpi_throttle0: <ACPI CPU Throttling> on cpu0
cpu1: <ACPI CPU> on acpi0
ACPI-0438: *** Error: Looking up [TYPE] in namespace, AE_NOT_FOUND
SearchNode 0xc63c6c20 StartNode 0xc63c6c20 ReturnNode 0
ACPI-1304: *** Error: Method execution failed [\\_PR_.CPU2._PDC] (Node 0xc63
c6c20), AE_NOT_FOUND
cpu2: <ACPI CPU> on acpi0
cpu3: <ACPI CPU> on acpi0
>How-To-Repeat:
>Fix:
machdep.hyperthreading_allowed=1
but it would be better to not to think this is a HT capable processor. (HT is not available in these, or at least it is disabled)
>Release-Note:
>Audit-Trail:
>Unformatted:
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