Does fsync on/off for wal AND Checkpoint?

From: GR Vishwanath <grv144(at)gmail(dot)com>
To: pgsql-performance(at)postgresql(dot)org
Subject: Does fsync on/off for wal AND Checkpoint?
Date: 2013-12-27 15:55:44
Message-ID: CAFTYffv9VoF25+oTHoCnqE9JjcuNyYMKj+VbG9_hNnRFzzRz2w@mail.gmail.com
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Is fscnc off/on pertain only to writing WAL buffers to disk?

Or is that also relevant to writing of dirty buffers to disk
(checkpoint/bg)?

Curious because in the docs fsync on/off is mentioned under WAL
configuration. Further there is a wal_sync_method but not a
"checkpoint_sync_method".

Shiv

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