The Lock wait type category includes all the waits that are caused when a task is waiting to acquire a lock, including the following:

• LCK_M_BU
• LCK_M_IS
• LCK_M_IU
• LCK_M_IX
• LCK_M_RIn_NL
• LCK_M_RIn_S
• LCK_M_RIn_U
• LCK_M_RIn_X
• LCK_M_RS_S
• LCK_M_RS_U
• LCK_M_RX_S
• LCK_M_RX_U
• LCK_M_RX_X
• LCK_M_S
• LCK_M_SCH_M
• LCK_M_SCH_S
• LCK_M_SIU
• LCK_M_SIX
• LCK_M_U
• LCK_M_UIX
• LCK_M_X
• XACTLOCKINFO