BobMgr::GetBuf: Sort Big Output Buffer write not complete after 60 seconds
BobMgr::GetBuf: Sort Big Output Buffer write not complete after 60 seconds.


Big Output Buffers (BoBs) are used when a sort spills to tempdb.

The 'big' buffer optimizes for large sequential I/O instead of writing sort records individually.

A delay of this length indicates a problem with the disk subsystem.