Ranjit Manomohan wrote:
> Currently the HTB rate for a class is update very slowly (once
> every 16 seconds). This patch updates the rate whenever the stats
> are requested from user space. This enables more accurate rate
> monitoring.
>
> +/* Update packet/byte rate for a class. */
> +static void calc_rate(struct htb_class *cl)
> +{
> + unsigned long now = jiffies;
> + if (time_after(now, (cl->rate_est_when + HZ))) {
> + unsigned int elapsed_secs =
> + (now - cl->rate_est_when)/HZ;
> + cl->sum_bytes /= elapsed_secs;
> + cl->sum_packets /= elapsed_secs;
> + RT_GEN (cl->sum_bytes,cl->rate_bytes);
> + RT_GEN (cl->sum_packets,cl->rate_packets);
> + cl->rate_est_when = now;
> + } else if time_before(now, cl->rate_est_when)
> + cl->rate_est_when = now; /* Wraparound */
> +}
We have a generic rate estimator, I think we should convert HTB over
to use it and then maybe add this feature to the generic estimator.
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