> [!NOTE] ![[assets/wl_ipc_multixactcreation.png|256]] > > | | | > | :--- | :--- | > | **Wait Category** | IPC | > | **Mechanism** | `MultiXact` | > | **Operations** | [[Operations/Tuple/ModifyTable]], [[Operations/Table/SeqScan]] | > | **Resources** | [[Resources/RAM|Memory]], [[Resources/CPU|CPU]] | > > **Shared Lock Identity Barrier**. While LWLocks handle the memory-level synchronization for MultiXacts, this IPC event tracks the higher-level process of carving out a new identity in the cluster's transaction history.