![[assets/wl_ipc_executegather.png|256]] - **Description**: The leader process is waiting for results from its parallel background workers during a 'Gather' operation. This wait is prominent when workers are busy processing complex query logic or heavy disk I/O. - **Operations**: - [[Operations/Gather]] - [[Operations/GatherMerge]] - **Resources**: [[Resources/CPU|CPU]], [[Resources/Memory|Memory]]