On Tue, 2011-08-09 at 19:20 +0200, Peter Zijlstra wrote: > > Now all of the above would seem to suggest: > > dirty_ratelimit := ref_bw > > However for that you use: > > if (pos_bw < dirty_ratelimit && ref_bw < dirty_ratelimit) > dirty_ratelimit = max(ref_bw, pos_bw); > > if (pos_bw > dirty_ratelimit && ref_bw > dirty_ratelimit) > dirty_ratelimit = min(ref_bw, pos_bw); > > You have: > > pos_bw = dirty_ratelimit * pos_ratio > > Which is ref_bw without the write_bw/dirty_bw factor, this confuses me.. > why are you ignoring the shift in output vs input rate there? Could you elaborate on this primary feedback loop? Its the one part I don't feel I actually understand well. -- 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
