On 30.05.2013 22:04, Johannes Weiner wrote:
+/* + * Monotonic workingset clock for non-resident pages. + * + * The refault distance of a page is the number of ticks that occurred + * between that page's eviction and subsequent refault. + * + * Every page slot that is taken away from the inactive list is one + * more slot the inactive list would have to grow again in order to + * hold the current non-resident pages in memory as well. + * + * As the refault distance needs to reflect the space missing on the + * inactive list, the workingset time is advanced every time the + * inactive list is shrunk. This means eviction, but also activation. + */ +static atomic_long_t workingset_time;
It seems strange to me, that workingset_time is global. Don't you want to make it per-cgroup? Two more questions: 1) do you plan to take fadvise's into account somehow? 2) do you plan to use workingset information to enhance the readahead mechanism? Thanks! Regards, Roman -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>