How Long Was That Event?

Taiob Ali shows that some extended event times are in milliseconds, some are in microseconds, and some are in unknownaseconds:

There was a question in dba.stackexchange.com titled “module_end extended events duration in microseconds?” that I answered and it was Microsecond in that instance.
Later on I questioned myself if the duration is always in Microseconds for extended events. I found, it is a mix of Millisecond, Microsecond and some are unknown meaning famous NULL. I wrote below tsql code to determine which is what.

Click through for the script that Taiob used to determine the answer.

Related Posts

Data-Driven Fill Factors

Tracy Boggiano has an Extended Event and a procedure to track page splits and then modify index-level fill factors accordingly: So what is the solution?  Well it really depends.  But the solution I wrote walks you through Setting the default fill factor Tracking page splits Lowering the fill factor Read on to learn more.

Read More

Availability Group Extended Events

Tracy Boggiano shows how to enhance the built-in Extended Events session for Availability Groups: Now that the extended events session is setup we can use some queries to query information about our AGs and error messages happening on our servers.  First to query when the server failover and becomes your primary server query the event availability_replica_state_change. […]

Read More

Categories

July 2017
MTWTFSS
« Jun Aug »
 12
3456789
10111213141516
17181920212223
24252627282930
31