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SophosScanD process consuming up to 95% CPU

Pelagus

Dear,

After downgrading my MacBook Pro from Mavericks back to Snow Leopard, I re-installed Sophos Free AV. It seems to work well, except that a SophosScanD process is almost constantly - with short intermittents - using up to 95% (on average, sometimes even more than that) CPU and heating up my machine. I have completely uninstalled and then re-installed the product, from your website, but it keeps happening.

Any ideas? Please let me know if you need more information.

Regards, Hans

:1018785


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  • 0

    Hi, I have the same problem, too. Since Sep 15, 2014.

    Specs:

    Mac OS X 10.9.4

    SAV 9.0.11

    TDE 3.51.0

    Threat data 5.01

    Greets,

    Jim78

    :1019075
  • 0

    The same as user gpr here, since this morning's update (15 September 2014).

    Mac OS 10.6.8

    Sophos Anti-Virus 9.0.11

    Threat detection engine 3.51.0

    Threat data 5.01

    :1019077
  • 0

    A temporary solution for me is to type this in the terminal window:

    sudo launchctl remove com.sophos.scan

    That blocks the process and allows me to work without my battery draining before reaching my destination. I'm surprised that noone from Sophos has responded, this clearly is linked with the update from the last 24 hours.

    :1019079
  • 0

    Me too. Have uninstalled temporarily and returned to previous antivirus protection. Finally I can hear myself think now the fans have shut up. 

    :1019081
  • 0

    This hit me this morning too.

    Had to uninstall, would love to be notified by Sophos when the situation has been remedied so I know when I can reinstall.

    OS 10.7.5

    Sophos 9

    :1019083
  • 0

    "sudo launchctl remove com.sophos.scan"

    Yes, this seems to be the only solution (other than uninstalling it).  Just a couple minutes have passed since I offed it, and I'm already 50 degrees F cooler (all four CPUs and GPU).  Heh.

    Anyway, it's nice to know it's not just me having this problem.  I had a GPU related crash yesterday, which I now am thinking was due to the load from whatever's gone wrong with Sophos AV that's causing the computer to run so hot.

    I don't know how the updates are done, but I am wondering if it's possible to revert to the last working version...?

    :1019085
  • 0

    Just happened to me now!! 

    Thought I had a virus installing but the easiest thing on OSX 10.7 or older is to force quit the process SophosScanD a few times until you just deinstall the software for maybe a few hours before reinstalling it

    mamamontasaki wrote:

    This hit me this morning too.

    Had to uninstall, would love to be notified by Sophos when the situation has been remedied so I know when I can reinstall.

    OS 10.7.5

    Sophos 9

    :1019087
  • 0

    Same problem here! 

    Mac OSX 10.9.4, Sophos AV 9.0.11

    Removed Sophos, rebooted, and reinstalled Sophos from here, which is currently version 9.0.8

    Macbook Pro didn't heat up anymore, fans running at normal speed. Yay!

    However, looking at activity monitor reveals that SophosScanD process still runs at about 100% CPU, but then immediately shuts down to be restarted shortly after. 

    This yields an odd-looking periodical pattern shown in the first image below - don't know whether this behaviour is normal or not?

    Since computer doens't heat up, it doens't seem to bother. Anyhow, Macbook doens't heat up with Sophos AV 9.0.8.

    However, immediately after updating Sophos to the latest version (9.0.11), the periodical pattern instantly stops, and SophosScanD constantly runs at about 100% CPU.

    The second image shows the abrupt change from periodical to constant CPU usage after update.

    Conclusion: something is definitely wrong with version 9.0.11 !

    Thus, ended up removing Sophos again and reinstalling version 9.0.8, but disabling auto-update in the settings until issue is fixed.

    So far so good, for now.

    PS.

    Don't know if it matters, but during removing and reinstalling sophos, following system notification popped up a few times:
    "The system extension "//System/Library/Extensions/AppleUSBEthernetHost.kext" was installed improperly & cannot be used. Please try reinstalling it or contact the product's vendor for an update."
    (An issue caused a few days ago by the recent iTunes update, see this thread).

    Maybe this has something to do with it?

    :1019089
  • 0

    Same thing here:

    Mac OS 10.8.6
    Sophos 9.0.11
    Threat detection engine 3.51.0
    Threat data 5.01

    I decided to uninstall the Sophos app until a fix is available.

    It's nice to finally see my CPU flatlining and have my hard drive silent for once.

    :1019093
  • 0

    Same problem here, Mavericks on rMBP13, 9.0.11, 3.51.0. Aside from talking about it here is there a mechanism for letting Sophos know there's a problem?

    :1019095
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