Hi
It looks like there is a disparity on how linux reports the number of
processors vs. ipmi's report (4 vs. 2, when hyperthreading is enabled):
....
CPU2: Intel P4/Xeon Extended MCE MSRs (24) available
CPU2: Thermal monitoring enabled
CPU2: Intel(R) Xeon(TM) CPU 3.60GHz stepping 01
Booting processor 3/7 eip 3000
CPU 3 irqstacks, hard=c03f1000 soft=c03d1000
Initializing CPU#3
Calibrating delay using timer specific routine.. 7181.01 BogoMIPS (lpj=3590509)
CPU: After generic identify, caps: bfebfbff 20100000 00000000 00000000
CPU: After vendor identify, caps: bfebfbff 20100000 00000000 00000000
monitor/mwait feature present.
CPU: Trace cache: 12K uops, L1 D cache: 16K
CPU: L2 cache: 1024K
CPU3: Initial APIC ID: 7, Physical Processor ID: 3
CPU: After all inits, caps: bfebfbff 20100000 00000000 00000080
Intel machine check architecture supported.
Intel machine check reporting enabled on CPU#3.
CPU3: Intel P4/Xeon Extended MCE MSRs (24) available
CPU3: Thermal monitoring enabled
CPU3: Intel(R) Xeon(TM) CPU 3.60GHz stepping 01
Total of 4 processors activated (28729.31 BogoMIPS).
ENABLING IO-APIC IRQs
..TIMER: vector=0x31 pin1=2 pin2=-1
checking TSC synchronization across 4 CPUs: passed.
Brought up 4 CPUs
....
Sample output through ipmitool, shows only two CPU:
....
CPU 1 Status | 0x0 | discrete | 0x8000| na | na | na
| na | na | na
CPU 2 Status | 0x0 | discrete | 0x8000| na | na | na
| na | na | na
CPU 1 Temp | 34.000 | degrees C | ok | na | 5.000 |
10.000 | 81.000 | 88.000 | na
CPU 2 Temp | 42.000 | degrees C | ok | na | 5.000 |
10.000 | 81.000 | 88.000 | na
....
Are we refering to physical cpu in ipmi vs logical cpu for linux kernel? (Or
are the sensor values common on the shared logical processors) Or perhaps, is
there a need for SDR updates? or ipmi driver update?
We are using ipmi driver version:
version: 33.13
vermagic: 2.6.9-42.ELsmp SMP 686 REGPARM 4KSTACKS gcc-3.4
Thanks,
Michael
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