> [!CheckpointerComm] > <table><tr><td rowspan="4" width="25%"><img src="assets/wl_ipc_checkpointercomm.png"></td><td><b>Wait Category</b></td><td>IPC</td></tr><tr><td><b>Mechanism</b></td><td><code>Checkpointer</code></td></tr><tr><td><b>Operations</b></td><td><a href="Operations/Table/SeqScan">SeqScan</a></td></tr><tr><td><b>Resources</b></td><td><a href="Resources/CPU">CPU</a>, <a href="Resources/RAM">Memory</a></td></tr><tr><td colspan="3"><b>Inter-Process Communication Bottleneck</b>. Backends communicate with the checkpointer to request that specific files be synchronized to disk (fsync) or to trigger an immediate checkpoint.</td></tr></table>