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From: Laurenz Albe <[email protected]>
To: Raj <[email protected]>
To: Thomas Carroll <[email protected]>
Cc: Pgsql-admin <[email protected]>
Subject: Re: Wal_keep_size
Date: Tue, 07 Oct 2025 07:28:45 +0200
Message-ID: <[email protected]> (raw)
In-Reply-To: <CAJk5AtbeY+O71bbESq1+rG3zqv=mPzEDaxMniXuBfjZ7+RKpaw@mail.gmail.com>
References: <CAJk5AtbaQYshqms+AnVn0A_BOHFjfYhdEaAsLGWf0zVnA_5N7Q@mail.gmail.com>
	<[email protected]>
	<CAJk5AtbeY+O71bbESq1+rG3zqv=mPzEDaxMniXuBfjZ7+RKpaw@mail.gmail.com>

On Tue, 2025-10-07 at 10:22 +0530, Raj wrote:
> If wal_keep_size is more than max_wal_size wouldn't it always trigger checkpoint ?

No.  "max_wal_size" has no direct connection with the size of WAL (and I
think we should have chosen a different name for that parameter).  The
parameter is about the amount of WAL *generated since the latest checkpoint*,
not about the absolute amount of WAL present.

Yours,
Laurenz Albe

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