On Thu, Aug 15, 2013 at 10:09:48AM +0200, Mike Hearn wrote: > Sounds awesome! > > Pieter told me at lunch that headers first cut sync time to 45 minutes for > him, which is another amazing improvement from the master of optimisations.
Just to make sure nobody expects a magic bullet: this was on a hexacore Xeon CPU, with several GB of -dbcache, libsecp256k1 for verification, and a very good network connection. It is repeatable and from random network peers, though. The code is here: https://github.com/sipa/bitcoin/commits/headersfirst It's usable and seems to be stable (including reindexing, which needs support for block files with out-of-order blocks now), but I still want to clean some things up before pullreq'in. There are probably some heuristic tweaks possible as well - Gregory found that performance is reduced for the first part of the chain on high-latency networks. > Pieter, Matt and I also agreed that for maximum impact we should really try > to ship payment protocol support in at least two clients simultaneously and > ideally with a big merchant signed up too - to send a powerful message that > we really mean it. Someone volunteered last week to do it for bitcoinj and > if he doesn't pull through, I have some old code from EOY 2012 that I could > update to the latest spec and ship at least some basic support. I'd hope > that we can get Bitcoin Wallet or MultiBit updates out once bcj has support > pretty fast. > > Also, Jeff said that BitPay want to be a leader in support for the > protocol. So let's try and co-ordinate release dates so we can make a bit > of a splash and grab the ecosystems attention. I believe we do need some wider support than just Bitcoin-Qt, indeed, as the number of people actually using the reference client as a wallet is quite low now. Ideally, several clients and merchants start support for it in a short timeframe... -- Pieter ------------------------------------------------------------------------------ Get 100% visibility into Java/.NET code with AppDynamics Lite! It's a free troubleshooting tool designed for production. Get down to code-level detail for bottlenecks, with <2% overhead. Download for free and get started troubleshooting in minutes. http://pubads.g.doubleclick.net/gampad/clk?id=48897031&iu=/4140/ostg.clktrk _______________________________________________ Bitcoin-development mailing list Bitcoin-development@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bitcoin-development
