| From: | Giuseppe Broccolo <giuseppe(dot)broccolo(at)2ndquadrant(dot)it> |
|---|---|
| To: | Xenofon Papadopoulos <xpapad(at)gmail(dot)com> |
| Cc: | postgres performance list <pgsql-performance(at)postgresql(dot)org> |
| Subject: | Re: pg_statio_all_tables columns |
| Date: | 2013-09-30 16:30:43 |
| Message-ID: | 5249A733.5070904@2ndquadrant.it |
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| Lists: | pgsql-performance |
Il 30/09/2013 16:41, Xenofon Papadopoulos ha scritto:
> Should this ratio stay low even in the case of a write-heavy table?
Yes, in my opinion. Before data manipolation, database pages are moved
on the shared buffer. heap_blks_read and heap_blks_hit are involved in
those operations, not directly in data persistance on hard driver.
Giuseppe.
--
Giuseppe Broccolo - 2ndQuadrant Italy
PostgreSQL Training, Services and Support
giuseppe(dot)broccolo(at)2ndQuadrant(dot)it | www.2ndQuadrant.it
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