First published on MSDN on Jan 07, 2011
I received a request today for help on how SQL Server I/O behaves. As I was writing up my e-mail response I thought it would also ...
Updated Jan 15, 2019
Version 2.0
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HasOverlappedIOCompleted is executed when I ran the DMV query or it cached by SQL engine and query to DMV queries a "cached version" of that result?
I want understand this because if when I query the DMV it not execute the HasOverlappedIOCompleted to give me real time data, then, some CPU bottleneck, for example, can show me incorrect results (for example, Windows has completed de I/O but SQL yet showing that is pending on Kernel side, due to some sort of botlleneck that cause dmv data not being update yet...)