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https://gitlab.torproject.org/tpo/core/tor.git
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Merge branch 'maint-0.4.7'
This commit is contained in:
commit
56ee2131f1
@ -52,8 +52,12 @@
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/** Moving average of the cc->cwnd from each circuit exiting slowstart. */
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double cc_stats_vegas_exit_ss_cwnd_ma = 0;
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double cc_stats_vegas_gamma_drop_ma = 0;
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double cc_stats_vegas_delta_drop_ma = 0;
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/* Running count of this moving average. Needed so we can update it. */
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static double stats_cwnd_exit_ss_ma_count = 0;
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static double stats_cwnd_gamma_drop_ma_count = 0;
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static double stats_cwnd_delta_drop_ma_count = 0;
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/** Stats on how many times we reached "delta" param. */
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uint64_t cc_stats_vegas_above_delta = 0;
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@ -331,8 +335,19 @@ congestion_control_vegas_process_sendme(congestion_control_t *cc,
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cc->next_cc_event = 1; // Technically irellevant, but for consistency
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}
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} else {
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uint64_t old_cwnd = cc->cwnd;
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uint64_t cwnd_diff;
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/* Congestion signal: Set cwnd to gamma threshhold */
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cc->cwnd = vegas_bdp(cc) + cc->vegas_params.gamma;
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/* Account the amount we reduced the cwnd by for the gamma cutoff */
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cwnd_diff = (old_cwnd > cc->cwnd ? old_cwnd - cc->cwnd : 0);
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stats_cwnd_gamma_drop_ma_count++;
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cc_stats_vegas_gamma_drop_ma =
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stats_update_running_avg(cc_stats_vegas_gamma_drop_ma,
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cwnd_diff, stats_cwnd_gamma_drop_ma_count);
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congestion_control_vegas_exit_slow_start(circ, cc);
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}
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@ -344,7 +359,20 @@ congestion_control_vegas_process_sendme(congestion_control_t *cc,
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/* After slow start, We only update once per window */
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} else if (cc->next_cc_event == 0) {
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if (queue_use > cc->vegas_params.delta) {
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uint64_t old_cwnd = cc->cwnd;
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uint64_t cwnd_diff;
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/* If we are above the delta threshhold, drop cwnd down to the
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* delta threshhold. */
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cc->cwnd = vegas_bdp(cc) + cc->vegas_params.delta - CWND_INC(cc);
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/* Account the amount we reduced the cwnd by for the gamma cutoff */
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cwnd_diff = (old_cwnd > cc->cwnd ? old_cwnd - cc->cwnd : 0);
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stats_cwnd_delta_drop_ma_count++;
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cc_stats_vegas_delta_drop_ma =
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stats_update_running_avg(cc_stats_vegas_delta_drop_ma,
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cwnd_diff, stats_cwnd_delta_drop_ma_count);
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cc_stats_vegas_above_delta++;
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} else if (queue_use > cc->vegas_params.beta || cc->blocked_chan) {
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cc->cwnd -= CWND_INC(cc);
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@ -13,6 +13,8 @@
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#include "core/or/circuit_st.h"
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extern double cc_stats_vegas_exit_ss_cwnd_ma;
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extern double cc_stats_vegas_gamma_drop_ma;
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extern double cc_stats_vegas_delta_drop_ma;
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extern uint64_t cc_stats_vegas_above_delta;
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extern uint64_t cc_stats_vegas_above_ss_cwnd_max;
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@ -392,6 +392,15 @@ fill_cc_values(void)
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metrics_store_entry_update(sentry,
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tor_llround(cc_stats_vegas_exit_ss_cwnd_ma));
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sentry = metrics_store_add(the_store, rentry->type, rentry->name,
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rentry->help);
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metrics_store_entry_add_label(sentry,
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metrics_format_label("state", "slow_start_exit"));
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metrics_store_entry_add_label(sentry,
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metrics_format_label("action", "gamma_drop"));
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metrics_store_entry_update(sentry,
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tor_llround(cc_stats_vegas_gamma_drop_ma));
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sentry = metrics_store_add(the_store, rentry->type, rentry->name,
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rentry->help);
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metrics_store_entry_add_label(sentry,
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@ -461,6 +470,15 @@ fill_cc_values(void)
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metrics_store_entry_add_label(sentry,
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metrics_format_label("action", "above_ss_cwnd_max"));
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metrics_store_entry_update(sentry, cc_stats_vegas_above_ss_cwnd_max);
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sentry = metrics_store_add(the_store, rentry->type, rentry->name,
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rentry->help);
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metrics_store_entry_add_label(sentry,
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metrics_format_label("state", "process_sendme"));
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metrics_store_entry_add_label(sentry,
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metrics_format_label("action", "delta_drop"));
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metrics_store_entry_update(sentry,
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tor_llround(cc_stats_vegas_delta_drop_ma));
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}
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/** Helper: Fill in single stream metrics output. */
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