On Fri, 31 Oct 2008, Jerker Nyberg wrote: > Hi all, > > I ran a simple write throughput benchmark for Ceph which might be of > interest. > > http://www.update.uu.se/~jerker/ceph/ > > Adding one more drive and running two cosd servers on each node does not > seem to get better performance.
This may be a problem with the switch, or a bottleneck with the host's interface. We've found that most inexpensive gig switches scale very poorly once you start using lots of ports at once. > However, Ceph seem to crash when I write > to it configured this way from all the nodes. Should this way of adding > more drives and cosd servers work or have I stumbled into some other bug? > > Do you want more debug information regarding this? Follow link above for > specifics about the setup. It clearly shouldn't crash. We're doing a lot of testing of the OSD cluster right now and have been working these bugs out. If the problem is reproducible, the OSD debug output when cosd is started with '--debug_osd 20 --debug_ms 1' would help us out! Thanks- sage > > Regards, > Jerker Nyberg. > > > ------------------------------------------------------------------------- > This SF.Net email is sponsored by the Moblin Your Move Developer's challenge > Build the coolest Linux based applications with Moblin SDK & win great prizes > Grand prize is a trip for two to an Open Source event anywhere in the world > http://moblin-contest.org/redirect.php?banner_id=100&url=/ > _______________________________________________ > Ceph-devel mailing list > Ceph-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/ceph-devel > > ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ _______________________________________________ Ceph-devel mailing list Ceph-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/ceph-devel
