Hey folks,
Part of our new kit involves a 3Par SAN/Array and HP blades so I've been reading up on best practices for SQL Server. Brent Ozar had a link to a technical whitepaper in his recent mailing list and here is what it says about maxdop:
"Change the default value of 0 (zero) for MAXDOP to 1 for OLTP workloads. Tune individual queries that need parallelism with their own MAXDOP hint."
Not that I'm saying this is necessarily 'bad' - it depends on the workload obviously(and whether the queries can be tuned i.e.: vendor may dig their heels in and say no). But surely in a 'technical whitepaper' HP should be testing Maxdop correctly -
"Note that initially we achieved a rate of 1.5 Million transactions per minute under a default MAXDOP value of zero. Once we changed the default to MAXDOP = 1 we reached 4.8 Million transactions per min"
My...