On Wed, 2010-11-24 at 15:14 +0100, Peter Schüller wrote: > >> Do you have any large page (hugetlbfs) or other multi-order (> 1 page) > >> allocations happening in the kernel? > > I forgot to address the second part of this question: How would I best > inspect whether the kernel is doing that? I found out yesterday how to do it with tracing, but it's not a horribly simple thing to do in any case. You can watch the entries in slabinfo and see if any of the ones with sizes over 4096 bytes are getting used often. You can also watch /proc/buddyinfo and see how often columns other than the first couple are moving around. Jumbo ethernet frames would be the most common reason to see these allocations. It's _probably_ not an issue in your case. -- Dave -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxxx For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom policy in Canada: sign http://dissolvethecrtc.ca/ Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>