CPU Fan high rpm

[George_A_]

Hi,

I've got a small 2200 appliance which returns from (not constantly) from sensor a high rpm speed on CPU Fan (10546rpm). Usually is at 5273 rpm.

show sysenv all
Hardware Information
Name             Value       Unit            Type          Status    Maximum     Minimum     
VCore             1.18         Volt            Voltage        0         1.5          0.6         
+12V              12.04        Volt            Voltage        0         14.0         10.0        
Memory Voltage    1.52         Volt            Voltage        0         1.8          1.2         
VCC               5.20         Volt            Voltage        0         6.0          4.0         
+1.5V             1.51         Volt            Voltage        0         1.8          1.2         
VSB               3.39         Volt            Voltage        0         3.9          2.7         
VBat              3.23         Volt            Voltage        0         3.6          2.0         
CPU Temp          52.50        Celsius         Temperature    0         100          0           
M/B Temp          45.00        Celsius         Temperature    0         80           0           
CPU Fan           10546.00      RPM             Fan            0         9000         2000        
Case Fan          3308.00      RPM             Fan            0         7000         600

I've issued also the followings commands:

cpstat -f cpu os
CPU User Time (%):   7
CPU System Time (%): 1
CPU Idle Time (%):   92
CPU Usage (%):       8
CPU Queue Length:    -
CPU Interrupts/Sec:  544
CPUs Number:         2

df -kh
Filesystem            Size  Used Avail Use% Mounted on
/dev/mapper/vg_splat-lv_current
                       31G  5.9G   24G  21% /
/dev/sda1             289M   64M  211M  24% /boot
tmpfs                 975M     0  975M   0% /dev/shm
/dev/mapper/vg_splat-lv_log
                       59G  8.8G   47G  16% /var/log
                       
cpstat -f memory os
Total Virtual Memory (Bytes):  6337982464
Active Virtual Memory (Bytes): 896327680
Total Real Memory (Bytes):     2044395520
Active Real Memory (Bytes):    896200704
Free Real Memory (Bytes):      1148194816
Memory Swaps/Sec:              -
Memory To Disk Transfers/Sec:  -

free -m
             total       used       free     shared    buffers     cached
Mem:          1949       1846        102          0        288        705
-/+ buffers/cache:        852       1096
Swap:         4094          0       4094

Anyone knows the reason ? May be something on the hardware side ? Dust, heavy things placed on the appliance, etc. ?

Thank you!

[Timothy_Hall]

Based on what you posted there doesn't seem to be any reason the CPU fan would be running that fast, assuming that the reported RPM value is correct.  What code level and jumbo HFA are you running?  I know there were quite a few fixes awhile back for incorrect/missing sensor readings, especially on open hardware.

That being said, can't hurt to grab a can of compressed air and give every opening on your 2200 a good blast to clear any dust out.

--
My Book "Max Power: Check Point Firewall Performance Optimization"
Second Edition Coming Soon