> [!NOTE] ![[assets/wl_ipc_dynamicsharedmemorycontrol.png|256]] > > | | | > | :--- | :--- | > | **Wait Category** | IPC | > | **Mechanism** | `DSM` | > | **Operations** | [[Operations/Table/SeqScan]], [[Operations/Index/IndexScan]] | > | **Resources** | [[Resources/RAM|Memory]], [[Resources/CPU|CPU]] | > > **Parallel Resource Management Bottleneck**. To prevent memory leaks and ensure that workers can find their shared data, Postgres maintains a global registry of every DSM segment currently in use.