It occurred to me that since I''ve released this as open source last week - see http://sourceforge.net/projects/collectl - I forgot to mention it to this group and one of collectl''s features is its ability to report on a lot of lustre stats as well - install it on a client or server and see the manpage titled collectl-lustre for more details. Every wonder about your brw stats? readahead? client metadata? Collectl also gives you the ability to look things like network (ethernet OR infiniband) traffic side-by-side with cpu, network, memory as well as a number of other stats on clients, osts or even the mds. check it out and let me know what you think. -mark