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I bought a new Intel R2208GZ4GC with 2 E5 2680V2 CPU.
As a result of a high workload, the CPUs are getting very hot with about 75°C, but the fans are still very low with about 2.418 rpm.
My actual bios configuration:
Set Fan Profile: performance
Fan PWM Offset: 100
Altitude: 300-900m
Set Throttling Mode: auto
OS: Ubuntu 14.04 LTS
What should I have to do to tell the fans to increase the speed?
Thanks,
Bikearni
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Normally you don't have to worry about it - the BMC monitors all temperature sensors and calculate the fan speed. What's your BIOS/FW version, and how did you get the CPU temperature reading?
On this board the CPU thermal sensor will report "Thermal Margin", which should usually be a negative value.
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Thanks for your response.
The IPMI says:
P1 Therm MarginNormalOK-33 degrees CUbuntu Sensors says:
coretemp-isa-0000
Adapter: ISA adapter
Physical id 0: +60.0°C (high = +85.0°C, crit = +95.0°C)
Core 0: +58.0°C (high = +85.0°C, crit = +95.0°C)
Core 1: +57.0°C (high = +85.0°C, crit = +95.0°C)
Core 2: +60.0°C (high = +85.0°C, crit = +95.0°C)
Core 3: +54.0°C (high = +85.0°C, crit = +95.0°C)
Core 4: +59.0°C (high = +85.0°C, crit = +95.0°C)
Core 8: +54.0°C (high = +85.0°C, crit = +95.0°C)
Core 9: +56.0°C (high = +85.0°C, crit = +95.0°C)
Core 10: +56.0°C (high = +85.0°C, crit = +95.0°C)
Core 11: +57.0°C (high = +85.0°C, crit = +95.0°C)
Core 12: +56.0°C (high = +85.0°C, crit = +95.0°C)
coretemp-isa-0001
Adapter: ISA adapter
Physical id 1: +41.0°C (high = +85.0°C, crit = +95.0°C)
Core 0: +36.0°C (high = +85.0°C, crit = +95.0°C)
Core 1: +41.0°C (high = +85.0°C, crit = +95.0°C)
Core 2: +41.0°C (high = +85.0°C, crit = +95.0°C)
Core 3: +39.0°C (high = +85.0°C, crit = +95.0°C)
Core 4: +40.0°C (high = +85.0°C, crit = +95.0°C)
Core 8: +39.0°C (high = +85.0°C, crit = +95.0°C)
Core 9: +32.0°C (high = +85.0°C, crit = +95.0°C)
Core 10: +41.0°C (high = +85.0°C, crit = +95.0°C)
Core 11: +37.0°C (high = +85.0°C, crit = +95.0°C)
Core 12: +39.0°C (high = +85.0°C, crit = +95.0°C)
I think the differences between CPU1 and CPU2 are because of different tasks, running on the System.
Bios Version:
Build Stamp : SE5C600.86B.02.02.0002.122320131210
Build Date : December 23, 2013
I noticed, that the Fans increase their speed at Term Margins higher than about -15 degree C. This is about 80 degree C. The Server is placed in a data center, so the volume does not matter. Other Systems have got a CPU Temperature from about 30 degree C and the Fans are working with about 7.000 rpm.
Thanks,
Arndt
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Current sensor readings look perfectly OK to me. Why would you want the fans to run faster? It will consume more power.
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Thanks for your reply. I thought the fans should run faster, because of our other servers where the cpu temperature don't increase more than 40 degree C peak.
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Today, we got some Kernel Messages. The Temperature was >85 degree C and the Fans were still running at the slowest Speet of about 2418 rpm.
Is there a Bios Update or an other way to increase the fan Speed?
Jun 14 13:32:44 easy5 kernel: [1920005.586473] CPU17: Core temperature above threshold, cpu clock throttled (total events = 1)
Jun 14 13:32:44 easy5 kernel: [1920005.586475] CPU37: Core temperature above threshold, cpu clock throttled (total events = 1)
Jun 14 13:32:44 easy5 kernel: [1920005.586477] CPU13: Package temperature above threshold, cpu clock throttled (total events = 1)
Jun 14 13:32:44 easy5 kernel: [1920005.586479] CPU34: Package temperature above threshold, cpu clock throttled (total events = 1)
Jun 14 13:32:44 easy5 kernel: [1920005.586480] CPU33: Package temperature above threshold, cpu clock throttled (total events = 1)
Jun 14 13:32:44 easy5 kernel: [1920005.586482] CPU14: Package temperature above threshold, cpu clock throttled (total events = 1)
Jun 14 13:32:44 easy5 kernel: [1920005.586484] CPU38: Package temperature above threshold, cpu clock throttled (total events = 1)
Jun 14 13:32:44 easy5 kernel: [1920005.586486] CPU15: Package temperature above threshold, cpu clock throttled (total events = 1)
Jun 14 13:32:44 easy5 kernel: [1920005.586487] CPU35: Package temperature above threshold, cpu clock throttled (total events = 1)
Jun 14 13:32:44 easy5 kernel: [1920005.586490] CPU39: Package temperature above threshold, cpu clock throttled (total events = 1)
Jun 14 13:32:44 easy5 kernel: [1920005.586492] CPU12: Package temperature above threshold, cpu clock throttled (total events = 1)
Jun 14 13:32:44 easy5 kernel: [1920005.586493] CPU32: Package temperature above threshold, cpu clock throttled (total events = 1)
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Couple things.
The CPU clock throttle events are normal events. (as long as the total events stay low)
The Fan boost should starts with a Therm margin of about ~ -10 and the fans with then ramp to hold the -10 margin temperature.
If you have a very high momentary stress application, the CPU may touch the 0 margin point faster than the fan ramps to cool and get logged in the kernel messages.
The fans will spike up in this case, the cpu does a very brief throttle and you should see the Total Events be a very small number.
There is not any measurable performanceloss when the occurs, (I did a bunch of testing on this before i would believe the Thermal guys on this)
If the power bill and noise is not a issue, you can raise the PWM offset set value to about 20% - 40% which starts the fans ramping at a faster speed. (raises the floor speed)
The Altitude setting can play a part as well. The higher the alattitude, the thinner the air so the faster the fans need to ramp.
Setting the Altitude higher will make the fans ramp faster.
I question the Fan PWM Offset: 100 (at 100% the fans should all be running 100% all the time)
If this is the setting, you may need to load the FRUSDR for the system to tell it what fans are connected so it can drive them.

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