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Submission details

promote
-20 +7/-27 votes
demote
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Svchost.exe (Windows Update service) check for updates on every resume from sleep/connection to net, 100% CPU for long time

Submitted by keff on July 30, 2008 to Annoyance, Usability

Svchost.exe is checking for updates every time I resume my laptop from sleep and it connects to internet, even several times a day. Every time it checks, there is 100% CPU load by svchost.exe, for 30 - 60s on 1.7GHz Centrino, and it checks immediately after resume, when you need CPU to resume all apps and start using computer (that's why you woke it up in the first place).

Updates comes once a month, and usually on a same day. There is no need to check for them 400 times in a month, once in 2-3 days is ok, and pick some interval when user isn't busy. Alternatively, check more often, but Windows Update service can simply do one http request whether any new updates are available, and do more work only if they are, no need to bring down CPU for a minute every time.

High

Medium

Not fixed

Discussion (9 comments)

keff wrote on July 30, 2008, 9:06pm

Changed solution description.
Changed impact from [Low] to [Medium].

Michael Mc wrote on July 30, 2008, 10:07pm

This doesn't happen for me and my laptop is 1.6GHz AMD Turion 64 x2 Mobile. :s

(Gotta hand it to Intel, Centrino is a lot easier to say! :p )

keff wrote on July 30, 2008, 10:41pm

Michael: that is strange, I see it on both Vista laptop and XP desktop, and when displayed with Process Explorer, it's always wuaueng.dll thread of svchost.exe that keeps CPU busy.

xiphi wrote on July 31, 2008, 4:28am

This doesn't happen on neither of my PC's. Laptop cpu is an Intel and my desktop cpu is an AMD.

bearluke wrote on July 31, 2008, 10:30am

-1
This doesn't happen for me

keff wrote on July 31, 2008, 11:54pm

OK guys, I guess should spend some time debugging... thanks :)

Michael Mc wrote on August 2, 2008, 7:20pm

Did you fix it?

keff wrote on August 3, 2008, 12:47am

It seems that there is a bug in windows update for XP: http://www.somelifeblog.com/2007/05/windows-xp-svchostexe-100-cpu-high.html

Still looking for a solution for Vista 32b

litemininyuszika wrote on January 4, 2009, 5:45pm

OMG, who the hell demoted it? It's NOT fixed in Windows 7, because it can't resume from sleep, probably because this!

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