From: raghu ram <raghuchennuru@gmail.com>
To: Willy-Bas Loos <willybas@gmail.com>
Cc: pgsql-performance@postgresql.org
Cc: pgsql-admin@postgresql.org
Subject: Re: [PERFORM] since when has pg_stat_user_indexes.idx_scan been counting?
Date: Thu, 12 May 2011 23:52:53 +0530
Message-ID: <BANLkTimeo-P+=fxKzui1Md2Siq_YJ7ASug@mail.gmail.com> (raw)
In-Reply-To: <BANLkTikhNLPhCjE819=RFG-+CB6UV4GbUA@mail.gmail.com>
References: <BANLkTikhNLPhCjE819=RFG-+CB6UV4GbUA@mail.gmail.com>
On Thu, May 12, 2011 at 9:09 PM, Willy-Bas Loos <willybas@gmail.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
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Reply to all the recipients using the --to and --cc options:
reply via email
To: pgsql-performance@postgresql.org
Cc: raghuchennuru@gmail.com, willybas@gmail.com, pgsql-admin@postgresql.org
Subject: Re: [PERFORM] since when has pg_stat_user_indexes.idx_scan been counting?
In-Reply-To: <BANLkTimeo-P+=fxKzui1Md2Siq_YJ7ASug@mail.gmail.com>
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
This inbox is served by DDX for PostgreSQL; see mirroring instructions
for how to clone and mirror all data and code used for this inbox