Hi, Could you add the following configuration parameter:
dump_configuration=true and send the output printed to standard out when starting up. Other useful information would be some thread dumps while executing a query that takes long time (send kill -3 signal to the process). Regards, Johan On Tue, Nov 23, 2010 at 10:53 AM, Martin Grimmer <[email protected]> wrote: > Hello, > > while running my benchmark i did the following: > added: -verbose:gc to see gc usage > run sar -u 1 100 > > and here are the results: > on a 4 core cpu > > CPU %user %nice %system %iowait %steal %idle > all 0,75 0,00 0,62 18,81 0,00 79,82 > > > -> Scaled to 1 core: actually the cpu does nothing to compute the > queries. Only 0.75% * 4 = 3% CPU usage for a single core, and 18,81% * 4 > = 75,24% io wait for a single core, the rest is divided into system and > idle. > > The gc output: > ... > [GC 806876K->326533K(1852416K), 0.2419270 secs] > ... many queries ... > [GC 873349K->423494K(1837760K), 0.3257520 secs] > ... many queries ... > [GC 956678K->502630K(1643648K), 0.3619280 secs] > ... many queries ... > [GC 839654K->551462K(1686720K), 0.3088770 secs] > ... > > So its not the GC. > > Thanks to all of you, > > -- > > * Martin Grimmer * > Developer, Semantic Web Project, IT > > Unister GmbH > Barfußgässchen 11 | 04109 Leipzig > > Telefon: +49 (0)341 49288 5064 > [email protected] <mailto:%0a%20%[email protected]> > www.unister.de <http://www.unister.de> > > Vertretungsberechtigter Geschäftsführer: Thomas Wagner > Amtsgericht Leipzig, HRB: 19056 _______________________________________________ Neo4j mailing list [email protected] https://lists.neo4j.org/mailman/listinfo/user
