I did run this query on server

SELECT session_id AS SessionID,

wait_duration_ms AS Wait_Time_In_Milliseconds,

resource_description AS Type_of_Allocation_Contention

FROM sys.dm_os_waiting_tasks

WHERE wait_type LIKE 'PAGELATCH_%'

AND (resource_description LIKE '2:%:1'

OR resource_description LIKE '2:%:2'

OR resource_description LIKE '2:%:3')

I got no rows. Is that means we don't have allocation contention on tempdb?