On Thu, Feb 17, 2011 at 3:32 PM, Massimo Lusetti <[email protected]> wrote:
> I'm trying to populate the DB with Nodes with only one String > property, an IPv4 address. This is just a test case for my typical use > case and it shows that when the process starts the first 440744 nodes > are going in at a speed of 1.05ms each Node but this speed drops to > 8.75ms after having inserted 12545155 nodes. > The final DB size is: 2.9G since i tweaked the sintrg_block_size at > graphdb creation time to 60bytes instead of 120... > I recently (yesterday) committed a new feature for Neo4j that will store these kinds of short strings, making Neo4j store them without having to involve the DynamicStringStore at all. You should see a substantial speedup from using that. IPv4 addresses will always be storeable as a short string, so if all you store as properties are IPv4 addresses the DynamicStringStore wouldn't be used at all in your use case. I've written a bit about how it works on my blog: http://journal.thobe.org/2011/02/better-support-for-short-strings-in.html The feature is available in the latest snapshot build: http://neo4j.org/get?file=neo4j-1.3-SNAPSHOT-unix.tar.gz And will be released in the next milestone. WRT the slowdown you've seen, I'll have to investigate that further. Cheers, -- Tobias Ivarsson <[email protected]> Hacker, Neo Technology www.neotechnology.com Cellphone: +46 706 534857 _______________________________________________ Neo4j mailing list [email protected] https://lists.neo4j.org/mailman/listinfo/user
