> If the reason for not setting a larger readahead value is just that it > might increase memory pressure and thus decrease performance, is it > possible to use a suitable metric from the VM in order to set the value > automatically according to circumstances? > How about tracking heuristics for 'read-hits from previous read-aheads'? If the hits are in acceptable range(user-configurable knob?) then keep seeking else back-off a little on the read-ahead? > Steve. Chetan Loke -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
