> [!SyncRep] > <table><tr><td rowspan="4" width="25%"><img src="assets/wl_lwlock_syncrep.png"></td><td><b>Wait Category</b></td><td>LWLock</td></tr><tr><td><b>Mechanism</b></td><td><code>SyncRepLock</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/RAM">Memory</a>, <a href="Resources/CPU">CPU</a></td></tr><tr><td colspan="3"><b>Durability Metadata Access Bottleneck</b>. While the <code>IPC:SyncRep</code> wait event represents a backend waiting for a standby to *send* an acknowledgment, this <code>LWLock:SyncRep</code> event represents contention for the *internal list* of those acknowledgments.</td></tr></table>