Re: Implementing pg_receivewal --no-sync

On Tue, Oct 24, 2017 at 11:05 PM, Kuntal Ghosh
<kuntalghosh(dot)2007(at)gmail(dot)com> wrote:
> + <para>
> + By default, <command>pg_receivewal</command> flushes a WAL segment's
> + contents each time a feedback message is sent to the server depending
> + on the interval of time defined by
> + <literal>--status-interval</literal>.
> IMHO, it's okay to remove the part 'depending on
> the.....<literal>--status-interval</literal>'.

This sentence is actually wrong, a feedback message is never sent with
the feedback message. You need to use either --synchronous or --slot
for that, and the docs are already clear on the matter.

> + This option causes
> + <command>pg_receivewal</command> to not issue such flushes waiting,
> Did you mean 'to not issue such flush waitings'?

By reading again the patch, "waiting" should not be here. I have
reworded the documentation completely anyway. Hopefully it is more
simple now.

> + [ 'pg_receivewal', '-D', $stream_dir, '--synchronous', '--no-sync' ],
> + 'failure if --synchronous specified without --no-sync');
> s/without/with

Right.
--
Michael