SQL performance difference in application an in SQL Server

Question

We are using Visual Studio 2010 and SQL Server 2012.
We insert into the database using the stored procedure InsertData.
When I timed in the program how long it takes to execute stored procedure InsertData, it takes more than 10 ms per insert. But, our SQL Admin told us that it took 0 ms to do the insert on SQL Server itself, and SQL Profiler also shows it took 0 ms to do that.
What can make the program shows that it took more than 10 ms per insert, but yet in SQL Server itself it takes 0 ms ? In the program below, t1 is before .executeNonquery and t2 is after .executeNonquery. If t2-t1 is more than 10 ms, I wrote it to a log
file, and I can see almost all records took longer than 10 ms. Thank you.
Private _command As SqlCommand
Private _connection As SqlConnection
_connection = New SqlConnection(_connectionString)
_connection.Open()
_command = New SqlCommand()
With _command
.Connection = _connection
.CommandType = CommandType.StoredProcedure
.CommandText = "InsertData"
.Parameters.Add("@sDateTime", SqlDbType.VarChar)
.Parameters.Add("@sContract", SqlDbType.VarChar)
.Parameters.Add("@sData", SqlDbType.VarChar)
.Parameters.Add("@iVol", SqlDbType.Int)
.Parameters.Add("@fTrade", SqlDbType.Float)
End With
With _command
.Parameters(0).Value = strongCastQuote.MessageDateTime
.Parameters(1).Value = sContract
.Parameters(2).Value = strongCastQuote.Data
.Parameters(3).Value = strongCastQuote.Volume.ToString()
.Parameters(4).Value = strongCastQuote.Price.ToString()
t1 = Date.Now.ToString("dd-MMM-yyyy HH:mm:ss") & "." & Date.Now.ToString("fffffff")
.ExecuteNonQuery()
t2 = Date.Now.ToString("dd-MMM-yyyy HH:mm:ss") & "." & Date.Now.ToString("fffffff")
If CDate(t2).Subtract(CDate(t1)).Milliseconds > 10 Then
LogExtra.SendToLog(sContract & " 1.strongCastQuote.MessageDateTime = " & strongCastQuote.MessageDateTime & " t1 = " & t1 & " t2 = " & t2)
End If
End With

Answer 1

Also please read this article
http://blogs.msdn.com/sqlserverstorageengine/archive/2008/03/23/minimal-logging-changes-in-sql-server-2008-part-2.aspx   ---Minimal Logging changes in SQL Server 2008
Best Regards,Uri Dimant SQL Server MVP,
http://sqlblog.com/blogs/uri_dimant/
MS SQL optimization: MS SQL Development and Optimization
MS SQL Consulting:
Large scale of database and data cleansing
Remote DBA Services:
Improves MS SQL Database Performance
SQL Server Integration Services:
Business Intelligence