![[assets/wl_cpu_memoryalgorithms.png|256]] - **Description**: CPU-intensive algorithmic work such as sorting datasets or building hash tables entirely within the allocated `work_mem`. If this overflows, it triggers `IO` (BufFileWrite/Read). - **Operations**: - [[Operations/Sort]] - [[Operations/Hash]] - [[Operations/HashJoin]] - [[Operations/Unique]] - **Resources**: [[Resources/CPU|CPU]], [[Resources/Memory|Memory]]