SELECT * FROM ::fn_dblog(NULL, NULL) WHERE operation = 'LOP_DELETE_SPLIT'ref ; http://killspid.blogspot.com/2006/07/using-fndblog.html
You can summarise them like this -
Select COUNT(1) AS NumberOfSplits, AllocUnitName , Context From fn_dblog(NULL,NULL) Where operation = 'LOP_DELETE_SPLIT' Group By AllocUnitName, Context Order by NumberOfSplits descref - Identifying Page Splits
Other ways to monitor page splits -
Recommended links about Page Allocation
MS CSS Sql Server Engineers : How It Works: SQL Server Page Allocations
Recommended links about Page Splits
Tony Rogerson : What is a page split and why does it happen?
SQL Server Performance : At what point should I worry about page splits?
Michelle Ufford : Page Splitting & Rollbacks
Michelle Ufford : sys.fn_physLocCracker (SQL 2008 Undoumented function)