On Fri, Aug 12, 2011 at 08:19:53PM +0200, Bernd Schubert wrote: > Hi there, > > with FhGFS we may use extended attributes to store file meta data > and with ext3/ext4 that also works very well and the rate to create > files and to write those EAs (create() + fsetxattr() is about 2.5 > to 3 times faster than with a create() + write(). Size of those EA > data is about 256 bytes depending on the number of storage stripes. > However, with XFS using extended attributes is *extremely* slow. > Here are some numbers with ext4 and xfs using a patched [1] bonnie++ Currently XFS uses synchronous transactions when retiring inodes with xattrs on them. So far I've not actually found a good reason for that, so I suspect we can remove it. I'll do another audit of it, and will send you a patch for it after doing basic QA. _______________________________________________ xfs mailing list xfs@xxxxxxxxxxx http://oss.sgi.com/mailman/listinfo/xfs
