I have a database which is getting a lot of calls to the following procedure:

`exec SM_SP_MAILEVENTNAMES 167260`

In MS-SQL Profiler using the TSQL_Duration trace these calls show up as:

    EventClass: RPC: Completed
    Duration: 900 to 1500 ms
    Reads: 8818 

Running the same query in Management Studio with **statistics io on** 

`set statistics io on exec SM_SP_MAILEVENTNAMES 167260`

runs instantaneously and has the following trace:

> Table 'SM_MAIL_CONTACTS'. Scan count 0, logical reads 29, physical reads 0, read-ahead
reads 0, lob logical reads 0, lob physical reads 0, lob read-ahead reads 0.<br>
> Table 'SM_MAIL_EVENT_CONTACTS'. Scan count 13, logical reads 68, physical reads 0,
read-ahead reads 0, lob logical reads 0, lob physical reads 0, lob read-ahead reads 0.<br>
> Table 'SM_MATTER_EVENTS'. Scan count 1, logical reads 3, physical reads 0, read-ahead reads 0, lob logical reads 0, lob physical reads 0, lob read-ahead reads 0.

The query itself returns about 3 rows.  Why the disparity in what I am seeing in Profiler and Studio?