Get "real" execution time of a SQL Server query? -


i have 2 stored stored procedures, second stored procedure improvement of first one.

i'm trying measure how improvement.

1/ measuring clock time doesn't seem option different execution times. worse, (rarely, happens) execution time of second stored procedure bigger execution time of first procedure (i guess due server workload @ moment).

2/ include client statistics provides different results.

3/ dbcc dropcleanbuffers, dbcc freeproccache good, same story...

4/ set statistics io on option, how overall score have many tables involved in stored procedures?

5/ include actual execution plan option also. estimated subtreecost of 0.3253 first stored procedure, , 0.3079 second one. can second stored procedure 6% faster (=0.3253/0.3079) ?

6/ using "reads" field sql server profiler? in case different results when execute stored procedure many times.

so how can second stored procedure x% faster first procedure, no matter execution conditions (the workload of server, server these stored procedures executed, etc).

if not possible, how can prove second stored procedure more optimized.


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