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[64.147.123.149]) by gmr-mx.google.com with ESMTPS id 5614622812f47-3d1e1a0350csi11418b6e.1.2024.05.30.11.21.03 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 30 May 2024 11:21:03 -0700 (PDT) Received-SPF: pass (google.com: domain of pete@petertodd.org designates 64.147.123.149 as permitted sender) client-ip=64.147.123.149; Received: from compute7.internal (compute7.nyi.internal [10.202.2.48]) by mailfout.west.internal (Postfix) with ESMTP id 08D1F1C00176; Thu, 30 May 2024 14:21:01 -0400 (EDT) Received: from mailfrontend1 ([10.202.2.162]) by compute7.internal (MEProxy); Thu, 30 May 2024 14:21:02 -0400 X-ME-Sender: X-ME-Received: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgedvledrvdekgedguddvudcutefuodetggdotefrod ftvfcurfhrohhfihhlvgemucfhrghsthforghilhdpqfgfvfdpuffrtefokffrpgfnqfgh necuuegrihhlohhuthemuceftddtnecusecvtfgvtghiphhivghnthhsucdlqddutddtmd enucfjughrpeffhffvvefukfhfgggtuggjsehgtderredttddunecuhfhrohhmpefrvght vghrucfvohguugcuoehpvghtvgesphgvthgvrhhtohguugdrohhrgheqnecuggftrfgrth htvghrnheptdegheelhfeugedtgedukedvtdekgfduheevhfehkeevieeigeffjeejjedv feeinecuffhomhgrihhnpehpvghtvghrthhouggurdhorhhgnecuvehluhhsthgvrhfuih iivgeptdenucfrrghrrghmpehmrghilhhfrhhomhepphgvthgvsehpvghtvghrthhouggu rdhorhhg X-ME-Proxy: Feedback-ID: i525146e8:Fastmail Received: by mail.messagingengine.com (Postfix) with ESMTPA; Thu, 30 May 2024 14:21:01 -0400 (EDT) Received: by localhost (Postfix, from userid 1000) id 472FF5F834; Thu, 30 May 2024 18:20:57 +0000 (UTC) Date: Thu, 30 May 2024 18:20:57 +0000 From: Peter Todd To: Juan David =?iso-8859-1?Q?Pe=F1a?= Melo Cc: Bitcoin Development Mailing List Subject: Re: [bitcoindev] How was the average size of blk*.data chosen? Message-ID: References: MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="sZUACPFPsAtOgCEJ" Content-Disposition: inline In-Reply-To: X-Original-Sender: pete@petertodd.org X-Original-Authentication-Results: gmr-mx.google.com; dkim=pass header.i=@messagingengine.com header.s=fm1 header.b=QBDRoOdN; spf=pass (google.com: domain of pete@petertodd.org designates 64.147.123.149 as permitted sender) smtp.mailfrom=pete@petertodd.org Precedence: list Mailing-list: list bitcoindev@googlegroups.com; contact bitcoindev+owners@googlegroups.com List-ID: X-Google-Group-Id: 786775582512 List-Post: , List-Help: , List-Archive: , List-Unsubscribe: , X-Spam-Score: -0.8 (/) --sZUACPFPsAtOgCEJ Content-Type: text/plain; charset="UTF-8" Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Mon, May 06, 2024 at 06:23:47PM -0700, Juan David Pe=C3=B1a Melo wrote: > I notice that the Bitcoin database is stored sequentially in blk*.dat=20 > files, with an average size between 128 to 134MB. I would like to know ho= w=20 > this average size is determined and if there are any tests that demonstra= te=20 > this size is the most efficient. Most likely someone just picked a number at random. For things like this, t= here is a very wide range of values that are probably fine. The main limiting fa= ctor at the high end, is some older file systems still don't support files >4GB,= so you'd want to pick a value below that; Monero all block data in a single fi= le, and that occasionally leads to issues when, eg, copying that file from one place to another. At the low end, having tens of thousands of files in one directory tends to cause problems. --=20 https://petertodd.org 'peter'[:-1]@petertodd.org --=20 You received this message because you are subscribed to the Google Groups "= Bitcoin Development Mailing List" group. To unsubscribe from this group and stop receiving emails from it, send an e= mail to bitcoindev+unsubscribe@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/= bitcoindev/ZljDiesLp29yqipn%40petertodd.org. --sZUACPFPsAtOgCEJ Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAEBCgAdFiEE0RcYcKRzsEwFZ3N5Lly11TVRLzcFAmZYw4cACgkQLly11TVR LzfsHhAAjptU+/e2lnjevcQBOQIVQTF8TM/uxD/W3uzBTmVM+MllfWiXbjufURUf Lo6NQfz6aGX3gx04BbzoKDXsrWSo+bGOtlLFtpqB9BehOopQRyosFPfpB0C1sxBO yOXPCBOyoJt1WoN5WEx0UM7hBMc+owMbqm1iFGkcDY1TyZOZXsLSJqZOf9l6loIP HqBrmMwTmn+XFcu10R1c4QvbA+utVxAlL3gI8CAlO7Nojx5bmtYraC6ThCxgNXNU mCubShBXI6X+xPb7FD3/Y9UWmPs5rfsJgFdrK+QjlL3cJpv1EWOKkuXC9VTc4Ozu IP+uuZjyPDx+AfhwuSRFbr5sEBoAzMoF222J9E104ZFJJvvgehbf+rFHNZ/+kMsq l6n5NQ2EX8/cElT4740sm4+Jgh173Mrf+sjW1e1TJIaVZ8m8CWY0KeG1PMSlhEiZ sPTnwpd4zVW/wfXPZM4bxk3Lkp9bV1JaS+afYKLxw0PTXbNgENvc6otgky+3Zo97 iqqs4120T84667VGcvTxCoJjyyFwgHyXGaZt9ONFuC+4parFHecgs/AVk8wmGmVh gJcpB7zPcYu4C9ZB85xyVbHm+I3uvRGQOYWGzUoSOWSM9Yu6bOktKDD8hmk4zoTi +yQ6DvUpbzEv+/wdw0cTnnAPFU0JWaFlrHt0iK0yVKsKur/fdRI= =lvL7 -----END PGP SIGNATURE----- --sZUACPFPsAtOgCEJ--