From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from sog-mx-3.v43.ch3.sourceforge.com ([172.29.43.193] helo=mx.sourceforge.net) by sfs-ml-2.v29.ch3.sourceforge.com with esmtp (Exim 4.76) (envelope-from ) id 1Rsbf3-000608-5S for bitcoin-development@lists.sourceforge.net; Wed, 01 Feb 2012 14:59:49 +0000 Received-SPF: pass (sog-mx-3.v43.ch3.sourceforge.com: domain of gmail.com designates 209.85.220.175 as permitted sender) client-ip=209.85.220.175; envelope-from=gmaxwell@gmail.com; helo=mail-vx0-f175.google.com; Received: from mail-vx0-f175.google.com ([209.85.220.175]) by sog-mx-3.v43.ch3.sourceforge.com with esmtps (TLSv1:RC4-SHA:128) (Exim 4.76) id 1Rsbex-0001vM-RK for bitcoin-development@lists.sourceforge.net; Wed, 01 Feb 2012 14:59:49 +0000 Received: by vcdn13 with SMTP id n13so1352234vcd.34 for ; Wed, 01 Feb 2012 06:59:38 -0800 (PST) MIME-Version: 1.0 Received: by 10.220.148.201 with SMTP id q9mr14950401vcv.33.1328108378393; Wed, 01 Feb 2012 06:59:38 -0800 (PST) Received: by 10.220.151.200 with HTTP; Wed, 1 Feb 2012 06:59:38 -0800 (PST) In-Reply-To: References: Date: Wed, 1 Feb 2012 09:59:38 -0500 Message-ID: From: Gregory Maxwell To: =?UTF-8?Q?Michael_Gr=C3=B8nager?= Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-Spam-Score: -1.3 (-) X-Spam-Report: Spam Filtering performed by mx.sourceforge.net. See http://spamassassin.org/tag/ for more details. -1.5 SPF_CHECK_PASS SPF reports sender host as permitted sender for sender-domain 0.0 FREEMAIL_FROM Sender email is commonly abused enduser mail provider (gmaxwell[at]gmail.com) -0.0 SPF_PASS SPF: sender matches SPF record -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature 0.3 AWL AWL: From: address is in the auto white-list X-Headers-End: 1Rsbex-0001vM-RK Cc: Bitcoin Dev Subject: Re: [Bitcoin-development] Announcement: libcoin X-BeenThere: bitcoin-development@lists.sourceforge.net X-Mailman-Version: 2.1.9 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 01 Feb 2012 14:59:49 -0000 On Wed, Feb 1, 2012 at 9:18 AM, Michael Gr=C3=B8nager wrote: > The libcoin/bitcoind client downloads the entire block chain 3.5 times fa= ster than the bitcoin/bitcoind client. This is less than 90 minutes on a mo= dern laptop! Very interesting. Do you know where this speedup came from? It's not typical for straight refactors that don't change datastructures and the like to see such big speedups. I see you have commented out code that disables fsync, which was my first guess since I get big speedups from doing similar things.