> [!ReplicationSlotRead] > <table><tr><td rowspan="4" width="25%"><img src="assets/wl_io_replicationslotread.png"></td><td><b>Wait Category</b></td><td>IO</td></tr><tr><td><b>Mechanism</b></td><td><code>ReplicationSlot</code></td></tr><tr><td><b>Operations</b></td><td><a href="Operations/Distributed/Redistribute">Redistribute</a></td></tr><tr><td><b>Resources</b></td><td><a href="Resources/disk IO">disk IO</a>, <a href="Resources/CPU">CPU</a></td></tr><tr><td colspan="3"><b>Replication Identity Retrieval stall</b>. Each replication slot (whether physical or logical) has a small file on disk that stores its current restart LSN, its catalog xmin, and its plugin configuration.</td></tr></table>