Only slightly related to this... What's the reason why BerkleyDB is maintained for the wallet? I think it would be a good thing to get rid of the libdb4.8++-dev dependency that makes bitcoind harder to compile on debian and ubuntu. Unless, of course, there's a reason I am missing...
On 9/17/13, Mike Hearn <m...@plan99.net> wrote: > LevelDB is fast - very fast if you give it enough CPU time and disk seeks. > But it's not the last word in performance. > > HyperLevelDB is a forked LevelDB with some changes, mostly, finer grained > locking and changes to how compaction works: > > http://hyperdex.org/performance/leveldb/ > > However, it comes with a caveat - one of the changes they made is to take > away write throttling if compaction falls behind, the app itself is > expected to do that. > > Sophia is a competitor to LevelDB. The website claims that in benchmarks it > completely smokes LevelDB. I have not explored how it does this or tried to > replicate their benchmarks myself: > > http://sphia.org/index.html > http://sphia.org/benchmarks.html > > It's written in C and BSD licensed. > > As an example of the kind of speedup they claim to be capable of, they say > LevelDB could do 167,476 random reads per second on their SSD based > machine. Sophia could do 438,084 reads/sec. Random reads are of course the > most interesting for us because that's what UTXO lookups involve. > > They also compare against HyperLevelDB, where the differences are much less > pronounced and actually HyperLevelDB appears to be able to do random writes > faster than Sophia. > -- Jorge Timón http://freico.in/ ------------------------------------------------------------------------------ LIMITED TIME SALE - Full Year of Microsoft Training For Just $49.99! 1,500+ hours of tutorials including VisualStudio 2012, Windows 8, SharePoint 2013, SQL 2012, MVC 4, more. BEST VALUE: New Multi-Library Power Pack includes Mobile, Cloud, Java, and UX Design. Lowest price ever! Ends 9/20/13. http://pubads.g.doubleclick.net/gampad/clk?id=58041151&iu=/4140/ostg.clktrk _______________________________________________ Bitcoin-development mailing list Bitcoin-development@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bitcoin-development
