on 18/09/2010 14:23 Robert Watson said the following: > I've been keeping a vague eye out for this over the last few years, and > haven't > spotted many problems in production machines I've inspected. You can use the > umastat tool in the tools tree to look at the distribution of memory over > buckets (etc) in UMA manually. It would be nice if it had some automated > statistics on fragmentation however. Short-lived fragmentation is likely, and > isn't an issue, so what you want is a tool that monitors over time and reports > on longer-lived fragmentation. > > The main fragmentation issue we've had in the past has been due to > mbuf+cluster > caching, which prevented mbufs from being freed usefully in some cases. > Jeff's > ongoing work on variable-sized mbufs would entirely eliminate that problem...
Robert, just in case, this thread is not about fragmentation, it's about per-cpu buckets, number of items in them and size of the items. -- Andriy Gapon _______________________________________________ freebsd-hackers@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to "freebsd-hackers-unsubscr...@freebsd.org"
