Re: Buffer Requests Trace

From: Simon Riggs <simon(at)2ndQuadrant(dot)com>
To: Lucas Lersch <lucaslersch(at)gmail(dot)com>
Cc: PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Buffer Requests Trace
Date: 2014-10-15 13:09:55
Message-ID: CA+U5nMJJurWt1j0Ny3Z9Okm7gKuWBTPjZanJAFYtYjGnDv6Siw@mail.gmail.com
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On 15 October 2014 13:44, Lucas Lersch <lucaslersch(at)gmail(dot)com> wrote:

> I am recording the BufferDesc.tag.blockNum for the buffer along with the
> spcNode, dbNode, relNode, also present in the tag.

The TPC-C I/O is random, so if you run it for longer you should see a wider set.

Cacheing isn't possible as a way to improve txn rates.

Check that you're touching all tables.

--
Simon Riggs http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Training & Services

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