Inanis.net » vista http://www.inanis.net/blog Daily ramblings of a computer technician. Tue, 07 Feb 2012 01:11:27 +0000 en hourly 1 http://wordpress.org/?v=3.3.1 AVG 8 + Vista SP1 = Poor Network Performance http://www.inanis.net/blog/index.php/2008/11/01/avg-8-vista-sp1-poor-network-performance/ http://www.inanis.net/blog/index.php/2008/11/01/avg-8-vista-sp1-poor-network-performance/#comments Sun, 02 Nov 2008 00:50:19 +0000 inanis http://www.inanis.net/blog/?p=711 Continue reading →]]> My computer was having random network peformance issues. If I ran the machine for a while, network transfers would cause my machine to hiccup and slow way down. Rebooting the machine fixed the problem. I thought this was due to a bogus network card, as has happened to me before using this model of motherboard, so I popped in a different network card and that solved the problem… for a while.

The different network card started having the same problem. I did some research, and thought it might be related to the “network slows down while playing audio” bug in Vista, but that was mostly fixed in SP1. Also, disabling the Multimedia Class Scheduler didn’t fix the problem.

I tried Running Process Explorer during the slowdown to pinpoint the location of the problem. It pointed to massive CPU usage during Deferred Procedure Calls: a classic kernel driver problem.

Since it wasn’t my network hardware, I started disabling other hardware. Nothing affected it. Then I tried playing with things that could interfere anywhere along the file I/O path. I tinkered around and found that if I uninstalled AVG 8, the problem would go away completely.

Seems like AVG8 and Vista don’t like each other too much.

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