Re: Re: [COMMITTERS] pgsql: Checkpointer starts before bgwriter to avoid missing fsync reque

On 1 June 2012 14:29, Tom Lane <tgl@sss.pgh.pa.us> wrote:

> Surely that commit is useless.  Fsync requests go into a queue in shared
> memory, which had better have been set up by the postmaster.  There is
> no requirement that the receiving process exist before somebody can put
> a request into the queue.  If the queue overflows, the requestor has to
> take care of the fsync itself, but that is independent of whether the
> checkpointer is running yet.

The problem I saw was about fsync queue message overflow, not actually
missing fsyncs, so perhaps I worded the commit message poorly.

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