PostgreSQL: Is there any way to differentiate an actual Disk I/O from system cache hit?

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                          When using EXPLAIN with buffers, the blocks read sometimes are actually from system cache, this is understandable sometimes based on the read time. But is there any proper way to understand a system cache-miss as of version 13?
                        

Asked by goodfella (595 rep)

Sep 10, 2024, 04:06 AM
Last activity: Sep 10, 2024, 09:30 PM

PostgreSQL: Is there any way to differentiate an actual Disk I/O from system cache hit?

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