From 71fb2af62c0a60fee94f984b782531a5d492b055 Mon Sep 17 00:00:00 2001 From: Nick Mathewson Date: Thu, 7 Apr 2011 14:56:50 -0400 Subject: [PATCH] Fix up some cell-queue stats issues in rephist.c - Document the structure and variables. - Make circuits_for_buffer_stats into a static variable. - Don't die horribly if interval_length is 0. - Remove the unused local_circ_id field. - Reorder the fields of circ_buffer_stats_t for cleaner alignment layout. --- src/or/rephist.c | 13 ++++++++++--- 1 file changed, 10 insertions(+), 3 deletions(-) diff --git a/src/or/rephist.c b/src/or/rephist.c index e56ce9e78e..74e156f33d 100644 --- a/src/or/rephist.c +++ b/src/or/rephist.c @@ -2330,14 +2330,19 @@ rep_hist_buffer_stats_init(time_t now) start_of_buffer_stats_interval = now; } +/** Statistics from a single circuit. Collected when the circuit closes, or + * when we flush statistics to disk. */ typedef struct circ_buffer_stats_t { - uint32_t processed_cells; + /** Average number of cells in the circuit's queue */ double mean_num_cells_in_queue; + /** Average time a cell waits in the queue. */ double mean_time_cells_in_queue; - uint32_t local_circ_id; + /** Total number of cells sent over this circuit */ + uint32_t processed_cells; } circ_buffer_stats_t; -smartlist_t *circuits_for_buffer_stats = NULL; +/** List of circ_buffer_stats_t. */ +static smartlist_t *circuits_for_buffer_stats = NULL; /** Remember cell statistics for circuit circ at time * end_of_interval and reset cell counters in case the circuit @@ -2361,6 +2366,8 @@ rep_hist_buffer_stats_add_circ(circuit_t *circ, time_t end_of_interval) circ->timestamp_created.tv_sec : start_of_buffer_stats_interval; interval_length = (int) (end_of_interval - start_of_interval); + if (interval_length <= 0) + return; stat = tor_malloc_zero(sizeof(circ_buffer_stats_t)); stat->processed_cells = orcirc->processed_cells; /* 1000.0 for s -> ms; 2.0 because of app-ward and exit-ward queues */