My DB is running on SQL 2012 and we have 32 core processors. As per SP_Blitz (Brent Ozar) we need to enable Trace flag 8048. My question is should we enable this flag on 2012 or it is recommended only for 2014 and downwards.
Microsoft's Bob Dorr wrote that trace flag 8048 is no longer required for SQL Server 2016 and newer:
This means that trace flag -T8048 is no longer valid or needed on SQL Server 2016 because the design is such that SQL Server dynamically adjusts to CMemThread wait activities in order to optimize performance.
However, the behavior it fixes (CMEMTHREAD waits) is still relevent for 2014 and earlier versions.