> >> The root of this issue is in sysfs directory creation. Every time > >> a directory is created a string compare is done against all sibling > >> directories to ensure we do not create duplicates. The list of > >> directory nodes in sysfs is kept as an unsorted list which results > >> in this being an exponentially longer operation as the number of > >> directories are created. > > > > Are you sure this is still an issue? I thought we solved this last > > kernel or so with a simple patch? > > I'll go back and look at this again. What I recall fixing is the symbolic linking from the node* to the memory section. In that case, we cached the most recent mem section and since they always were added sequentially, the cache saved a rescan. Of course, I could be remembering something completely unrelated. Robin -- 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>