From: Ian Westmacott <ianw@intellivid.com>
To: pgsql-performance@postgresql.org
Subject: wal_buffers
Date: Wed, 05 Oct 2005 09:23:45 -0400
Message-ID: <1128518624.15795.28.camel@spectre.intellivid.com> (raw)
Can anyone tell me what precisely a WAL buffer contains,
so that I can compute an appropriate setting for
wal_buffers (in 8.0.3)?
I know the documentation suggests there is little
evidence that supports increasing wal_buffers, but we
are inserting a large amount of data that, I believe,
easily exceeds the default 64K in a single transaction.
We are also very sensitive to write latency.
As background, we are doing a sustained insert of 2.2
billion rows in 1.3 million transactions per day. Thats
about 1700 rows per transaction, at (roughly) 50 bytes
per row.
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To: pgsql-performance@postgresql.org
Cc: ianw@intellivid.com
Subject: Re: wal_buffers
In-Reply-To: <1128518624.15795.28.camel@spectre.intellivid.com>
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