PostgreSQL query for cache performance counters?

From: ambilalmca <ambilalmca(at)gmail(dot)com>
To: pgsql-performance(at)postgresql(dot)org
Subject: PostgreSQL query for cache performance counters?
Date: 2014-01-10 09:46:50
Message-ID: 1389347210781-5786245.post@n5.nabble.com
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Can any one teel me the query to get value for *Number of cached blocks read,
Number of cached index blocks read, Number of cached sequence blocks read*
in Postgresql? I just find all other queries, except this. so if you know
kindly help me.

Thanks in advance.

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