Received: from malur.postgresql.org ([217.196.149.56]) by arkaria.postgresql.org with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1kBINR-0002xL-C8 for pgsql-hackers@arkaria.postgresql.org; Thu, 27 Aug 2020 13:55:41 +0000 Received: from localhost ([127.0.0.1] helo=malur.postgresql.org) by malur.postgresql.org with esmtp (Exim 4.92) (envelope-from ) id 1kBINP-0002Pe-NP for pgsql-hackers@arkaria.postgresql.org; Thu, 27 Aug 2020 13:55:39 +0000 Received: from magus.postgresql.org ([2a02:c0:301:0:ffff::29]) by malur.postgresql.org with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1kBINP-0002PX-Gr for pgsql-hackers@lists.postgresql.org; Thu, 27 Aug 2020 13:55:39 +0000 Received: from tamriel.snowman.net ([2001:470:e38f::11]) by magus.postgresql.org with esmtp (Exim 4.92) (envelope-from ) id 1kBINN-0006ef-4r for pgsql-hackers@postgresql.org; Thu, 27 Aug 2020 13:55:39 +0000 Received: by tamriel.snowman.net (Postfix, from userid 1000) id F0C0E5F79F; Thu, 27 Aug 2020 09:55:33 -0400 (EDT) Date: Thu, 27 Aug 2020 09:55:33 -0400 From: Stephen Frost To: Sait Talha Nisanci Cc: Thomas Munro , Tomas Vondra , Dmitry Dolgov <9erthalion6@gmail.com>, David Steele , Andres Freund , Alvaro Herrera , pgsql-hackers Subject: Re: [EXTERNAL] Re: WIP: WAL prefetch (another approach) Message-ID: <20200827135533.GJ29590@tamriel.snowman.net> References: <20200502151423.yf52i63u232fdfrg@localhost> <20200605223422.r76a5rpl2zg2xo34@development> <20200606003632.GS6680@tamriel.snowman.net> <20200803154659.nzf5qzuozts5dujp@development> <20200806104701.j3xnkczd6qelfnhj@development> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="DPAUPcI2aFbG8uqj" Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.24 (2015-08-30) List-Id: List-Help: List-Subscribe: List-Post: List-Owner: List-Archive: Precedence: bulk --DPAUPcI2aFbG8uqj Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Greetings, * Sait Talha Nisanci (Sait.Nisanci@microsoft.com) wrote: > I have run some benchmarks for this patch. Overall it seems that there is a good improvement with the patch on recovery times: Maybe I missed it somewhere, but what's the OS/filesystem being used here..? What's the filesystem block size..? Thanks, Stephen --DPAUPcI2aFbG8uqj Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAEBCgAGBQJfR7tVAAoJEO1sijiDR2RVaJgQAKRBMfO4ip+IsE/1oFd+/RdP gn3Z81rVwa1ion7hVDFu6uHr3YMeNRGpljIKfNC5N2hykUsEAjSwh+Z7RuPrJQjf qHHd50vObN7FmOUHp/V4yqJEuQ0sWaRMu4ELgCdDllXE416RT4bbZn0SJiPCdWI6 h08sq43qUisgBZSQTn7131rT0xVhPpWMGaqL1Ry7BaOi4q0xM45iJn4oRPtk7trG FjVOV5ctLg2vb03hvLIISyyYLXXy+UlzRMaprEjhXSFeQaubnDB/brGsh1zBWhlQ WllgH9rAuCUP9vLu+NbRqpmxv2Ylk7fEGn6kF6XIOm5IzLkEsUIcZGCeVJB9iO10 2MeFEBnhBBIwhIafdD4ajD5BK0sruk0QcVkz4pqJxftDZGNczgLHoUg24fun5xId 7oRT7pFE64iGhu5R/mrnack4Vi9oHKpfirp9t6o283A9My7KubxXZjx2NqxFnJvz 8LpDplo9Qibw/R814IyvjsuejpfhA76+6+mDH2j4BtVE7VyPfulPmIZ0dm00S48G X7cwHtUR/7VgYN5mEbGcNdrYSEKHLt3qeMvCdcmUIpPrBCU5/aT0iPxY4hZk+RYA 6xV4UtnE94HTWXz9qbMZxQ0YF69/UQYTHgNja4BtrJgUDi+YBukSH8RNi7ht08Zw EUo03jwrXnkRqzWbw3sS =Df6Z -----END PGP SIGNATURE----- --DPAUPcI2aFbG8uqj--