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Fix bugs relating to not counting timeouts as circuit builds.

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Also use bin midpoints for time values.
This commit is contained in:
Mike Perry 2009-09-09 00:01:57 -07:00
parent 67cee75ca2
commit 742e08046f
1 changed files with 9 additions and 6 deletions
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15
src/or/circuitbuild.c
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@ -261,7 +261,7 @@ circuit_build_times_mode(circuit_build_times_t *cbt)
tor_free(histogram); tor_free(histogram);
return max_bin*BUILDTIME_BIN_WIDTH; return max_bin*BUILDTIME_BIN_WIDTH+BUILDTIME_BIN_WIDTH/2;
} }
/** /**
@ -291,8 +291,8 @@ circuit_build_times_update_state(circuit_build_times_t *cbt,
*next = line = tor_malloc_zero(sizeof(config_line_t)); *next = line = tor_malloc_zero(sizeof(config_line_t));
line->key = tor_strdup("CircuitBuildTimeBin"); line->key = tor_strdup("CircuitBuildTimeBin");
line->value = tor_malloc(25); line->value = tor_malloc(25);
tor_snprintf(line->value, 25, "%d %d", i*BUILDTIME_BIN_WIDTH, tor_snprintf(line->value, 25, "%d %d",
histogram[i]); i*BUILDTIME_BIN_WIDTH+BUILDTIME_BIN_WIDTH/2, histogram[i]);
next = &(line->next); next = &(line->next);
} }
@ -548,10 +548,12 @@ circuit_build_times_initial_alpha(circuit_build_times_t *cbt,
static void static void
circuit_build_times_count_pretimeouts(circuit_build_times_t *cbt) circuit_build_times_count_pretimeouts(circuit_build_times_t *cbt)
{ {
/* Store a timeout as a random position on this curve. */ /* Store a timeout as a random position past the current
* cutoff on the pareto curve */
if (cbt->pre_timeouts) { if (cbt->pre_timeouts) {
double timeout_quantile = 1.0- double timeout_quantile = 1.0-
((double)cbt->pre_timeouts)/cbt->total_build_times; ((double)cbt->pre_timeouts)/
(cbt->pre_timeouts+cbt->total_build_times);
cbt->Xm = circuit_build_times_min(cbt); cbt->Xm = circuit_build_times_min(cbt);
// Use current timeout to get an estimate on alpha // Use current timeout to get an estimate on alpha
circuit_build_times_initial_alpha(cbt, timeout_quantile, circuit_build_times_initial_alpha(cbt, timeout_quantile,
@ -628,7 +630,7 @@ circuit_build_times_check_too_many_timeouts(circuit_build_times_t *cbt)
double timeout; double timeout;
int i; int i;
if (cbt->total_build_times < RECENT_CIRCUITS) { if ((cbt->pre_timeouts+cbt->total_build_times) < RECENT_CIRCUITS) {
return 0; return 0;
} }
@ -643,6 +645,7 @@ circuit_build_times_check_too_many_timeouts(circuit_build_times_t *cbt)
timeout_rate++; timeout_rate++;
} }
} }
timeout_rate += cbt->pre_timeouts;
timeout_rate /= RECENT_CIRCUITS; timeout_rate /= RECENT_CIRCUITS;
/* If more than 80% of our recent circuits are timing out, /* If more than 80% of our recent circuits are timing out,