The outage happened every 6 hours, performing trace
This page http://technet.microsoft.com/en-us/library/ms179984.aspx describes TRACEWRITE as ‘Occurs when the SQL Trace rowset trace provider waits for either a free buffer or a buffer with events to process.’ The deadlock trace is the second case; it is waiting for a buffer with events in it. When there are no deadlocks it just waits all the time.
Here’s a competitor’s product with the same ‘issue’ http://forum.sqlsentry.net/topic1941-high-tracewrite-waits-with-performance-advisor.aspx
And the same source of concern; Confio.
Otherwise you can also disable SQL Analysis for reporting which by default is every 6 hours.
