Thank you Grant .

(I saw you present at SQL in the City - London actually!)

Using Glenn Berry's query i can confirm it's all pointing back at I/O >

wait_type ...

data and tempdb are on S:

log are on L:

I ran -

select wait_duration_ms , wait_type, blocking_session_id from sys.dm_os_waiting_tasks order by 1 desc

2512536962ONDEMAND_TASK_QUEUENULL

2512536575BROKER_TRANSMITTERNULL

2512536575BROKER_TRANSMITTERNULL

2512530889KSOURCE_WAKEUPNULL

2512530880BROKER_EVENTHANDLERNULL

26978702XE_DISPATCHER_WAITNULL

906459CHECKPOINT_QUEUENULL

34778DISPATCHER_QUEUE_SEMAPHORENULL

8612XE_TIMER_EVENTNULL

4828REQUEST_FOR_DEADLOCK_SEARCHNULL

3910SQLTRACE_INCREMENTAL_FLUSH_SLEEPNULL

996BROKER_TO_FLUSHNULL

462LAZYWRITER_SLEEPNULL

211LOGMGR_QUEUENULL

thanks

s

Thank you Jason

So if I presize database MDF file this should not happen?

I did advise presizing data files a while ago but the message got lost somewhere.

Big thank you

I will...