| From: | raghu ram <raghuchennuru(at)gmail(dot)com> |
|---|---|
| To: | Willy-Bas Loos <willybas(at)gmail(dot)com> |
| Cc: | pgsql-performance(at)postgresql(dot)org, pgsql-admin(at)postgresql(dot)org |
| Subject: | Re: [PERFORM] since when has pg_stat_user_indexes.idx_scan been counting? |
| Date: | 2011-05-12 18:22:53 |
| Message-ID: | BANLkTimeo-P+=fxKzui1Md2Siq_YJ7ASug@mail.gmail.com |
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| Lists: | pgsql-admin pgsql-performance |
On Thu, May 12, 2011 at 9:09 PM, Willy-Bas Loos <willybas(at)gmail(dot)com> wrote:
> Hi,
>
> We have some indexes that don't seem to be used at all.
> I'd like to know since when they have not been used.
> That is, the time when postgres started counting to reach the number that
> is in pg_stat_user_indexes.idx_scan
>
> Is there a way to retrieve that from the database ?
>
"Analyze" activity will update the statistics of each catalog table.
pg_postmaster_start_time --> Retrieves the Postmaster [ PostgreSQL Instance]
start time
postgres=# select pg_postmaster_start_time();
--Raghu Ram
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