9 Replies Latest reply: Oct 24, 2007 9:09 AM by DaddyPaycheck
Elliot Theis Level 1 Level 1 (105 points)
Hi,
One of our xServe's is reporting intermittently the CPU 1 Internal Temperature is 86.67C

This seems to be triggered by sending email via SMTP...

Here is the report:
Sensors:
CPU 1 Power : 30.51 watts
System Controller Ambient : 42.75 C
System Controller Internal : 54.50 C
CPU 1 Inlet : 27.50 C
Behind the DIMMs : 53.00 C
CPU 1 Ambient : 39.50 C
Between the Processors : 37.00 C
PCI Slots : 45.00 C
DDR IO : 2.61 volts
CPU 2 Inlet : 26.00 C
CPU 1 Internal : 86.67 C * Warning *
1.5v : 1.49 volts
3.3v Trickle : 3.28 volts
5v : 5.02 volts
CPU 1 12v : 1.17 amps
12v Trickle : 11.94 volts
1.2v : 1.18 volts
1.8v : 1.79 volts
System Bus IO VDD : 1.47 volts
CPU 1 Vcore : 1.21 volts
DDR IO Sleep : 2.63 volts
3.3v : 3.29 volts
3.3v Sleep : 3.27 volts
CPU 1 Core : 25.15 amps
5v Sleep : 5.07 volts
12v : 12.00 volts
1.2v Sleep : 1.18 volts
System Controller Vcore : 1.71 volts
1.5v Sleep : 1.51 volts

Does anyone have any ideas?

Thanks in advanced for your reply.

Elliot

MacBook Pro, Mac OS X (10.4.9), G5 dual 2.7ghz ; Xserve dual 2.7ghz
  • 1. Re: Xserve temperature
    Roger Smith3 Level 6 Level 6 (13,475 points)
    Make sure that the inside of the machine isn't loaded with dust. Make sure that all the grills (air inlets/outlets) are clean so the air can move freely, and find a cooler place for the machine. The inlet temperature looks to be ~15F higher than I want for my machines. Also make sure that the warm air blown out the back of the machine is removed somehow.

    Roger
  • 2. Re: Xserve temperature
    Elliot Theis Level 1 Level 1 (105 points)
    Hi Roger,
    Good idea i will check the machine for dust... I recently checked the air inlets for dust and they seemed to be ok... I have no control on the enviormental temperature of which the server is located as it is in a data centre, which they keep the temperature 22 C ± 2 C...... They also have a hot and cold bay... Any ideas why the temperature increases from around 70 C to around 86 C when sending or receiving emails?

    Elliot
  • 3. Re: Xserve temperature
    Roger Smith3 Level 6 Level 6 (13,475 points)
    The temperature usually goes up when the machine is under load. Usually mail isn't that much of a load, unless you've become a spam relay. So, the question becomes what is working hard when the mail is being sent. Activity monitor.app for GUI sorts will show what's going on like top would in Terminal.

    Which process is running up the processor, do you see a corresponding temperature rise, and do the fans kick up to try to bring the temperature down?

    Are there any messages in system.log?

    Roger
  • 4. Re: Xserve temperature
    Elliot Theis Level 1 Level 1 (105 points)
    Ok i have had a look when the server receives an email, there are 2 processes that crop up:
    Process name: Clamscan User: clamav
    Process name: perl User: clamav

    they are using about 90% CPU

    Regards,
    Elliot
  • 5. Re: Xserve temperature
    DaddyPaycheck Level 6 Level 6 (16,035 points)
    Hi Elliot Theis-

    That is your Spam filter, I believe.

    You may want to dig a little deeper as i does sound like you may be a relay.

    Luck-

    -DaddyPaycheck
  • 6. Re: Xserve temperature
    Elliot Theis Level 1 Level 1 (105 points)
    Hi DaddyPaycheck,

    How can i check to see if i am a relay..

    Sorry for such a stupid question

    Regards,
    Elliot
  • 7. Re: Xserve temperature
    Tod Kuykendall Level 4 Level 4 (2,270 points)
    Clam AV is your anti-virus scanning on a default OS X Cyrus/Postfix set-up. (SpamAssassin is the default SPAM filtering software.) If either your CAV or SA have become incorrect/obsolete in their configuration or are trying to do too much this can lead to heavy processing usage.

    I think DaddyPC is thinking that you're processing way more email than you're seeing and that's why you're doing more work than you think you are. This is possible but it is also possible that you are simply working too hard at it. Spam/virus filtering is always a trade-off between how much time you want/need to spend on it versus how much trouble it's giving you.

    I would recommend reading some of the OS X Server > Mail threads and then perhaps posting on that board where hopefully the Mail config gurus can help you out. I think tweaking your email set-up to cut down on the number of emails you actually process and/or adjusting your Clam AV settings will help you with your load problem. Spam/Virus processing adjustment is a constant source of discussion and debate.

    Good luck,

    =Tod
  • 8. Re: Xserve temperature
    Elliot Theis Level 1 Level 1 (105 points)
    Thanks very much Tod,

    I will give that a go.

    Regards,
    Elliot
  • 9. Re: Xserve temperature
    DaddyPaycheck Level 6 Level 6 (16,035 points)
    Hi Tod and Elliot-

    Not sure that I was thinking much at all (:>) It is the Antivirus thing.

    Thanks for summing it up.

    CPU1 temperature may very well be be rising because the process that is running is utilizing only that processor.

    Luck-

    -DaddyPaycheck

    Message was edited by: DaddyPaycheck