Date: Thu, 19 Apr 2007 11:29:15 +0400 From: Alex Povolotsky <tarkhil@webmail.sub.ru> To: freebsd-stable@freebsd.org Subject: 6.2-RELEASE does not use second CPU? Message-ID: <46271A4B.50408@webmail.sub.ru>
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Hello!
On the Pentium-D box, kernel detects both CPUs, but it seems like
scheduler use only one.
(from dmesg)
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FreeBSD 6.2-RELEASE-p3 #2: Thu Apr 19 00:19:54 MSD 2007
tarkhil@cluster-one.zinester.com:/usr/obj/usr/src/sys/P4D
WARNING: debug.mpsafenet forced to 0 as ipsec requires Giant
WARNING: MPSAFE network stack disabled, expect reduced performance.
Timecounter "i8254" frequency 1193182 Hz quality 0
CPU: Intel(R) Pentium(R) D CPU 2.80GHz (2808.41-MHz 686-class CPU)
Origin = "GenuineIntel" Id = 0xf64 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=0xe49d<SSE3,RSVD2,MON,DS_CPL,EST,CNTX-ID,CX16,<b14>,<b15>>
AMD Features=0x20100000<NX,LM>
AMD Features2=0x1<LAHF>
Logical CPUs per core: 2
real memory = 1046757376 (998 MB)
avail memory = 1015095296 (968 MB)
ACPI APIC Table: <INTEL DG965SS >
FreeBSD/SMP: Multiprocessor System Detected: 2 CPUs
cpu0 (BSP): APIC ID: 0
cpu1 (AP): APIC ID: 1
....
SMP: AP CPU #1 Launched!
(from top)
last pid: 12408; load averages: 4.99, 4.91, 4.08 up 0+01:08:02
19:26:23
265 processes: 8 running, 256 sleeping, 1 zombie
CPU states: 35.0% user, 0.0% nice, 14.1% system, 0.9% interrupt, 50.0%
idle
Mem: 267M Active, 503M Inact, 171M Wired, 29M Cache, 109M Buf, 1636K Free
Swap: 2006M Total, 2006M Free
PID USERNAME THR PRI NICE SIZE RES STATE C TIME WCPU COMMAND
1399 125 1 109 0 4684K 2808K RUN 0 11:20 18.85% qmgr
1819 300 1 4 0 33552K 30824K select 0 8:58 13.57% perl5.8.8
1821 300 1 4 0 33364K 30644K select 0 9:15 6.05% perl5.8.8
12398 125 1 4 0 3588K 2524K select 0 0:00 2.00% cleanup
1394 root 1 104 0 3444K 1596K RUN 0 1:58 1.66% master
10601 125 1 97 0 3580K 1728K select 0 0:18 0.83%
trivial-rewri
10051 125 1 97 0 4536K 2688K RUN 0 0:13 0.63% scache
All processes runs on CPU0, and I did not see less than 50% idle cpu.
What can be wrong?
Alex.
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