I've been noticing some erratic behavior from our query servers with some searches taking unusually long time to execute. Digging through logs doesn't really show anything, except for entries like :
w3wp.exe (0x1390) ... Entering monitored scope (RefinementManager.GetRefinement(Dictionary<string, ictionary<string, RefinementDataElement>>, XmlDocument, int))
10/11/2010 13:14:31.69 w3wp.exe (0x1390) ... Leaving Monitored Scope (RefinementManager.GetRefinement(Dictionary<string, Dictionary<string, RefinementDataElement>>, XmlDocument, int)).
So it took at least 10 seconds to run this search, while others may take less than half a second. Any ideas what that might be?
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