On Tue, 2011-08-09 at 11:50 -0400, Vivek Goyal wrote: > > So IIUC, bdi->dirty_ratelimit is the dynmically adjusted desired rate > limit (based on postion ratio, dirty_bw and write_bw). But this seems > to be overall bdi limit and does not seem to take into account the > number of tasks doing IO to that bdi (as your comment suggests). So > it probably will track write_bw as opposed to write_bw/N. What am > I missing? I think the per task thing comes from him using the pages_dirtied argument to balance_dirty_pages() to compute the sleep time. Although I'm not quite sure how he keeps fairness in light of the sleep time bounding to MAX_PAUSE. -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
