If it's ext3, try playing w/ different journaling settings... that can have a big impact on write performance depending on the type of writes coming in.
Nicholas On Thu, Sep 23, 2010 at 10:23 PM, Patrick Cable <p...@pcable.net> wrote: > On Thu, Sep 23, 2010 at 9:53 PM, Doug Hughes <d...@will.to> wrote: >> What size chunks is the application writing? How many files? What size >> files? What is the back-end filesystem behind NFS? > > I will try to find this out tomorrow (though what I can say right now > is that it's an ext3 filesystem). > I'm not sure how much we'll know because the particular software that > generates this data is... special. > > The documentation for this application mentions the following > particular issues with NFS: > - NFS can't make FIFOs (which is mitigated by the fact we store FIFOs > on a local partition) > - "More important, SOFTWARE uses the mmap() system call on some of > the files in the output directory, and mmap)( isn't reliable on an NFS > mounted filesystem" (mitigated by.. I'm not sure, I did some googling > and that seemed to be fixed in later kernel versions, i.e. *not* > RHEL3). > _______________________________________________ > Tech mailing list > Tech@lopsa.org > http://lopsa.org/cgi-bin/mailman/listinfo/tech > This list provided by the League of Professional System Administrators > http://lopsa.org/ > _______________________________________________ Tech mailing list Tech@lopsa.org http://lopsa.org/cgi-bin/mailman/listinfo/tech This list provided by the League of Professional System Administrators http://lopsa.org/
