> [!TupleProcessing] > <table><tr><td rowspan="4" width="25%"><img src="assets/wl_cpu_tupleprocessing.png"></td><td><b>Wait Category</b></td><td>CPU</td></tr><tr><td><b>Mechanism</b></td><td><code>heap_getnext</code></td></tr><tr><td><b>Operations</b></td><td><a href="Operations/Table/SeqScan">SeqScan</a>, <a href="Operations/Index/IndexScan">IndexScan</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">This state indicates <b>Data Throughput Saturation</b>. Once the pages are in memory and the locks are acquired, the CPU must physically iterate through the bytes on the page, verify tuple headers, and extract the requested columns.</td></tr></table>