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Lately I've had one particular svchost.exe instance that's often spiking up and taking 12-40% of my CPU. The services it's hosting are:

  • FDResPub (Function Discovery Resource Publication)
  • FontCache (Windows Font Cache Service)
  • SSDPSRV (SSDP Discovery)
  • upnphost (UPnP Device Host)

This was causing major problems on my computer (which had been running for 25 days without restart), so I figured a reboot would fix it. Guessed wrong, it's taking 25% of CPU from the moment I logged in.

Can anyone provide any insight as to what might be causing this particular svchost to be so CPU-consuming? It's becoming a major hindrance since it's preventing me from running any other CPU-intensive process (namely games but other programs too)

If you need any more information from me, don't hesitate to ask :)
(Running Windows 7 Home Premium x86)

EDIT: Stopping FDResPub seems to have fixed the problem. I looked it up and it seems unlikely that I actually will ever want it running... Anyway, this makes sense since I'm on a huge network here and about 99% of the computers use Windows 7 and probably have homegroup features... I'm rambling here :D But if anyone has anything to add to this, please do so :)

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  • have you tried manually halting those services one at a time to narrow down which one is behaving badly?
    – Xantec
    Commented Dec 1, 2010 at 19:30
  • Yes I have - beat you to it ;)
    – Niet the Dark Absol
    Commented Dec 1, 2010 at 19:31
  • assuming this wiki is accurate it looks like the FDResPub service enables HomeGroup features as well as publishing of shared resources to the network (folders/drives/printers). as long as you can live without all that then you will probably be OK disabling it. if you do disable it keep an eye out after Windows Updates are installed as it may be set back to automatic start.
    – Xantec
    Commented Dec 1, 2010 at 20:07
  • Okay, thanks for the warning about Windows Updates :)
    – Niet the Dark Absol
    Commented Dec 1, 2010 at 20:09

1 Answer 1

Reset to default
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I had the same exact problem with the same four services except that it would happen sometimes for hour and then go away for hours. It went away when I disconnected from HomeGroup and I am about certain that it was my Xbox being on or off that caused the problem to occur intermittently.

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