RE: Speed up the removal of WAL files

From: "Tsunakawa, Takayuki" <tsunakawa(dot)takay(at)jp(dot)fujitsu(dot)com>
To: 'Michael Paquier' <michael(at)paquier(dot)xyz>
Cc: Fujii Masao <masao(dot)fujii(at)gmail(dot)com>, Kyotaro HORIGUCHI <horiguchi(dot)kyotaro(at)lab(dot)ntt(dot)co(dot)jp>, "pgsql-hackers(at)postgresql(dot)org" <pgsql-hackers(at)postgresql(dot)org>
Subject: RE: Speed up the removal of WAL files
Date: 2018-03-09 00:50:03
Message-ID: 0A3221C70F24FB45833433255569204D1F8FF98E@G01JPEXMBYT05
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From: Michael Paquier [mailto:michael(at)paquier(dot)xyz]
> Hm. durable_xx should remain a sane operation as an isolated call as you
> still get the same problem if a crash happens before flushing the parent...
> Fujii-san idea also has value to speed up the end of recovery but this costs
> as well in extra recycling operations post promotion. If the checkpoint
> was to happen a the end of recovery then that would be more logic, but we
> don't for performance reasons. Let's continue to discuss on this thread.
> If you have any patch to offer, let's also look at them.
>
> Anyway, as things are pretty much idle on this thread for a couple of days
> and that we are still discussing potential ideas, I think that this entry
> should be marked as returned with feedback. Thoughts?

OK, I moved this to the next CF. Thank you for your cooperation.

Regards
Takayuki Tsunakawa

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