Hi Andreas, many thanks for your detailed answer.
> Do you have imbalanced free space on the OSTs? If yes, how much and do > you know why it got imbalanced in the past? > The allocation varies from 65 - 70% usage per OST. The mean was 67%. So definitely no difference > 25%. > > Does anyone can confirm this observation? > > > > Is this really a 'feature' of Lustre and if so are there plans to > > 're-design' the object allocation part, so that > > > > -a- full bandwidth can be reached with help of RR > > There is a bug open that discusses how to improve the OST space balancing > using the round-robin allocator to avoid the dramatic performance loss > that you are seeing. In https://bugzilla.lustre.org/show_bug.cgi?id=18547 > there is a discussion of the issues and possible solutions, but work has > not progressed recently. > I'll check the bugzilla ticket, to find out whether there's a solution for our problem. Many thanks. Cheers -Frank ------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------ Forschungszentrum Juelich GmbH 52425 Juelich Sitz der Gesellschaft: Juelich Eingetragen im Handelsregister des Amtsgerichts Dueren Nr. HR B 3498 Vorsitzender des Aufsichtsrats: MinDirig Dr. Karl Eugen Huthmacher Geschaeftsfuehrung: Prof. Dr. Achim Bachem (Vorsitzender), Dr. Ulrich Krafft (stellv. Vorsitzender), Prof. Dr.-Ing. Harald Bolt, Prof. Dr. Sebastian M. Schmidt ------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------ Besuchen Sie uns auf unserem neuen Webauftritt unter www.fz-juelich.de _______________________________________________ Lustre-discuss mailing list [email protected] http://lists.lustre.org/mailman/listinfo/lustre-discuss
