On 2010-08-30, at 19:24, Charles Manning wrote: > I'm investigating a performance degradation in yaffs when xattribs are > enabled. Yes, I know yaffs is not part of mainline Linux yet, but this is > really a vfs question. > > What I notice is that on every write the "security.capability" xattribute gets > checked. Surely once the vfs has tried reading this once it should not try > again on every write. This was also discussed in the thread "remove_suid bangs on xattrs" a couple of weeks ago. We've noticed this on btrfs and Lustre also, and it really hurts performance over the network. Cheers, Andreas -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
