Comments (1)
Ideas of I/O intensive operations, as just discussed:
-
temp files due to sorting ( https://explain.dalibo.com/plan/pES ) or hash joins ( https://explain.dalibo.com/plan/f0S )
-
temporary tables ( "local" buffers, see https://explain.dalibo.com/plan/3yw or https://explain.dalibo.com/plan/jK0 )
-
read and written blocks (see https://explain.dalibo.com/plan/Zje)
In the above examples, the Buffers read/written/temp indicate the amount of I/O.
For the duration:
- If
track_io_timnig = on
, the ''I/O Timing'' entry can indicate which node takes the most I/O time (see all above examples).
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