prosody
c434bff22b14
util/statistics.lua

Find changesets by keywords by author, files, the commit message, revision number or hash, or revset expression.

Software / code / prosody

Annotate

util/statistics.lua @ 10303:c434bff22b14

mod_csi_simple: Always remove session filters when disabling CSI Only guard the actual pausing of outgoing data on the method existing. This prevents the filters from lingering in case something happened to the connection. Removing already removed filters should be a safe noop.
author Kim Alvefur <zash@zash.se>
date Sat, 05 Oct 2019 16:55:58 +0200
parent 7988:dc758422d896
child 10314:bbc879eab1bf
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
6553
0e29c05c3503 util.statistics: New library for gathering various kinds of statistics
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
1 local t_sort = table.sort
0e29c05c3503 util.statistics: New library for gathering various kinds of statistics
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
2 local m_floor = math.floor;
7988
dc758422d896 util.statistics,statsd,throttle,timer: Replace dependency on LuaSockect with util.time for precision time
Kim Alvefur <zash@zash.se>
parents: 6649
diff changeset
3 local time = require "util.time".now;
6553
0e29c05c3503 util.statistics: New library for gathering various kinds of statistics
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
4
0e29c05c3503 util.statistics: New library for gathering various kinds of statistics
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
5 local function nop_function() end
0e29c05c3503 util.statistics: New library for gathering various kinds of statistics
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
6
0e29c05c3503 util.statistics: New library for gathering various kinds of statistics
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
7 local function percentile(arr, length, pc)
0e29c05c3503 util.statistics: New library for gathering various kinds of statistics
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
8 local n = pc/100 * (length + 1);
0e29c05c3503 util.statistics: New library for gathering various kinds of statistics
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
9 local k, d = m_floor(n), n%1;
0e29c05c3503 util.statistics: New library for gathering various kinds of statistics
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
10 if k == 0 then
6562
2b5ced5ca31f util.statistics: Return 0 as percentile if data out of range
Matthew Wild <mwild1@gmail.com>
parents: 6555
diff changeset
11 return arr[1] or 0;
6553
0e29c05c3503 util.statistics: New library for gathering various kinds of statistics
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
12 elseif k >= length then
0e29c05c3503 util.statistics: New library for gathering various kinds of statistics
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
13 return arr[length];
0e29c05c3503 util.statistics: New library for gathering various kinds of statistics
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
14 end
0e29c05c3503 util.statistics: New library for gathering various kinds of statistics
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
15 return arr[k] + d*(arr[k+1] - arr[k]);
0e29c05c3503 util.statistics: New library for gathering various kinds of statistics
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
16 end
0e29c05c3503 util.statistics: New library for gathering various kinds of statistics
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
17
0e29c05c3503 util.statistics: New library for gathering various kinds of statistics
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
18 local function new_registry(config)
0e29c05c3503 util.statistics: New library for gathering various kinds of statistics
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
19 config = config or {};
0e29c05c3503 util.statistics: New library for gathering various kinds of statistics
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
20 local duration_sample_interval = config.duration_sample_interval or 5;
0e29c05c3503 util.statistics: New library for gathering various kinds of statistics
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
21 local duration_max_samples = config.duration_max_stored_samples or 5000;
0e29c05c3503 util.statistics: New library for gathering various kinds of statistics
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
22
6555
7b2d16c14659 statsmanager, util.statistics: API changes, remove debugging
Matthew Wild <mwild1@gmail.com>
parents: 6553
diff changeset
23 local function get_distribution_stats(events, n_actual_events, since, new_time, units)
7b2d16c14659 statsmanager, util.statistics: API changes, remove debugging
Matthew Wild <mwild1@gmail.com>
parents: 6553
diff changeset
24 local n_stored_events = #events;
7b2d16c14659 statsmanager, util.statistics: API changes, remove debugging
Matthew Wild <mwild1@gmail.com>
parents: 6553
diff changeset
25 t_sort(events);
7b2d16c14659 statsmanager, util.statistics: API changes, remove debugging
Matthew Wild <mwild1@gmail.com>
parents: 6553
diff changeset
26 local sum = 0;
7b2d16c14659 statsmanager, util.statistics: API changes, remove debugging
Matthew Wild <mwild1@gmail.com>
parents: 6553
diff changeset
27 for i = 1, n_stored_events do
7b2d16c14659 statsmanager, util.statistics: API changes, remove debugging
Matthew Wild <mwild1@gmail.com>
parents: 6553
diff changeset
28 sum = sum + events[i];
7b2d16c14659 statsmanager, util.statistics: API changes, remove debugging
Matthew Wild <mwild1@gmail.com>
parents: 6553
diff changeset
29 end
7b2d16c14659 statsmanager, util.statistics: API changes, remove debugging
Matthew Wild <mwild1@gmail.com>
parents: 6553
diff changeset
30
7b2d16c14659 statsmanager, util.statistics: API changes, remove debugging
Matthew Wild <mwild1@gmail.com>
parents: 6553
diff changeset
31 return {
7b2d16c14659 statsmanager, util.statistics: API changes, remove debugging
Matthew Wild <mwild1@gmail.com>
parents: 6553
diff changeset
32 samples = events;
7b2d16c14659 statsmanager, util.statistics: API changes, remove debugging
Matthew Wild <mwild1@gmail.com>
parents: 6553
diff changeset
33 sample_count = n_stored_events;
7b2d16c14659 statsmanager, util.statistics: API changes, remove debugging
Matthew Wild <mwild1@gmail.com>
parents: 6553
diff changeset
34 count = n_actual_events,
7b2d16c14659 statsmanager, util.statistics: API changes, remove debugging
Matthew Wild <mwild1@gmail.com>
parents: 6553
diff changeset
35 rate = n_actual_events/(new_time-since);
7b2d16c14659 statsmanager, util.statistics: API changes, remove debugging
Matthew Wild <mwild1@gmail.com>
parents: 6553
diff changeset
36 average = n_stored_events > 0 and sum/n_stored_events or 0,
7b2d16c14659 statsmanager, util.statistics: API changes, remove debugging
Matthew Wild <mwild1@gmail.com>
parents: 6553
diff changeset
37 min = events[1] or 0,
7b2d16c14659 statsmanager, util.statistics: API changes, remove debugging
Matthew Wild <mwild1@gmail.com>
parents: 6553
diff changeset
38 max = events[n_stored_events] or 0,
7b2d16c14659 statsmanager, util.statistics: API changes, remove debugging
Matthew Wild <mwild1@gmail.com>
parents: 6553
diff changeset
39 units = units,
7b2d16c14659 statsmanager, util.statistics: API changes, remove debugging
Matthew Wild <mwild1@gmail.com>
parents: 6553
diff changeset
40 };
7b2d16c14659 statsmanager, util.statistics: API changes, remove debugging
Matthew Wild <mwild1@gmail.com>
parents: 6553
diff changeset
41 end
7b2d16c14659 statsmanager, util.statistics: API changes, remove debugging
Matthew Wild <mwild1@gmail.com>
parents: 6553
diff changeset
42
7b2d16c14659 statsmanager, util.statistics: API changes, remove debugging
Matthew Wild <mwild1@gmail.com>
parents: 6553
diff changeset
43
6553
0e29c05c3503 util.statistics: New library for gathering various kinds of statistics
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
44 local registry = {};
0e29c05c3503 util.statistics: New library for gathering various kinds of statistics
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
45 local methods;
0e29c05c3503 util.statistics: New library for gathering various kinds of statistics
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
46 methods = {
0e29c05c3503 util.statistics: New library for gathering various kinds of statistics
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
47 amount = function (name, initial)
0e29c05c3503 util.statistics: New library for gathering various kinds of statistics
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
48 local v = initial or 0;
6555
7b2d16c14659 statsmanager, util.statistics: API changes, remove debugging
Matthew Wild <mwild1@gmail.com>
parents: 6553
diff changeset
49 registry[name..":amount"] = function () return "amount", v; end
6553
0e29c05c3503 util.statistics: New library for gathering various kinds of statistics
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
50 return function (new_v) v = new_v; end
0e29c05c3503 util.statistics: New library for gathering various kinds of statistics
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
51 end;
0e29c05c3503 util.statistics: New library for gathering various kinds of statistics
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
52 counter = function (name, initial)
0e29c05c3503 util.statistics: New library for gathering various kinds of statistics
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
53 local v = initial or 0;
6555
7b2d16c14659 statsmanager, util.statistics: API changes, remove debugging
Matthew Wild <mwild1@gmail.com>
parents: 6553
diff changeset
54 registry[name..":amount"] = function () return "amount", v; end
6553
0e29c05c3503 util.statistics: New library for gathering various kinds of statistics
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
55 return function (delta)
0e29c05c3503 util.statistics: New library for gathering various kinds of statistics
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
56 v = v + delta;
0e29c05c3503 util.statistics: New library for gathering various kinds of statistics
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
57 end;
0e29c05c3503 util.statistics: New library for gathering various kinds of statistics
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
58 end;
0e29c05c3503 util.statistics: New library for gathering various kinds of statistics
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
59 rate = function (name)
0e29c05c3503 util.statistics: New library for gathering various kinds of statistics
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
60 local since, n = time(), 0;
6555
7b2d16c14659 statsmanager, util.statistics: API changes, remove debugging
Matthew Wild <mwild1@gmail.com>
parents: 6553
diff changeset
61 registry[name..":rate"] = function ()
6553
0e29c05c3503 util.statistics: New library for gathering various kinds of statistics
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
62 local t = time();
0e29c05c3503 util.statistics: New library for gathering various kinds of statistics
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
63 local stats = {
0e29c05c3503 util.statistics: New library for gathering various kinds of statistics
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
64 rate = n/(t-since);
0e29c05c3503 util.statistics: New library for gathering various kinds of statistics
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
65 count = n;
0e29c05c3503 util.statistics: New library for gathering various kinds of statistics
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
66 };
0e29c05c3503 util.statistics: New library for gathering various kinds of statistics
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
67 since, n = t, 0;
0e29c05c3503 util.statistics: New library for gathering various kinds of statistics
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
68 return "rate", stats.rate, stats;
0e29c05c3503 util.statistics: New library for gathering various kinds of statistics
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
69 end;
0e29c05c3503 util.statistics: New library for gathering various kinds of statistics
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
70 return function ()
0e29c05c3503 util.statistics: New library for gathering various kinds of statistics
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
71 n = n + 1;
0e29c05c3503 util.statistics: New library for gathering various kinds of statistics
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
72 end;
0e29c05c3503 util.statistics: New library for gathering various kinds of statistics
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
73 end;
6555
7b2d16c14659 statsmanager, util.statistics: API changes, remove debugging
Matthew Wild <mwild1@gmail.com>
parents: 6553
diff changeset
74 distribution = function (name, unit, type)
7b2d16c14659 statsmanager, util.statistics: API changes, remove debugging
Matthew Wild <mwild1@gmail.com>
parents: 6553
diff changeset
75 type = type or "distribution";
6553
0e29c05c3503 util.statistics: New library for gathering various kinds of statistics
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
76 local events, last_event = {}, 0;
0e29c05c3503 util.statistics: New library for gathering various kinds of statistics
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
77 local n_actual_events = 0;
0e29c05c3503 util.statistics: New library for gathering various kinds of statistics
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
78 local since = time();
0e29c05c3503 util.statistics: New library for gathering various kinds of statistics
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
79
6555
7b2d16c14659 statsmanager, util.statistics: API changes, remove debugging
Matthew Wild <mwild1@gmail.com>
parents: 6553
diff changeset
80 registry[name..":"..type] = function ()
6553
0e29c05c3503 util.statistics: New library for gathering various kinds of statistics
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
81 local new_time = time();
6555
7b2d16c14659 statsmanager, util.statistics: API changes, remove debugging
Matthew Wild <mwild1@gmail.com>
parents: 6553
diff changeset
82 local stats = get_distribution_stats(events, n_actual_events, since, new_time, unit);
6553
0e29c05c3503 util.statistics: New library for gathering various kinds of statistics
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
83 events, last_event = {}, 0;
0e29c05c3503 util.statistics: New library for gathering various kinds of statistics
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
84 n_actual_events = 0;
0e29c05c3503 util.statistics: New library for gathering various kinds of statistics
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
85 since = new_time;
6555
7b2d16c14659 statsmanager, util.statistics: API changes, remove debugging
Matthew Wild <mwild1@gmail.com>
parents: 6553
diff changeset
86 return type, stats.average, stats;
7b2d16c14659 statsmanager, util.statistics: API changes, remove debugging
Matthew Wild <mwild1@gmail.com>
parents: 6553
diff changeset
87 end;
6553
0e29c05c3503 util.statistics: New library for gathering various kinds of statistics
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
88
6555
7b2d16c14659 statsmanager, util.statistics: API changes, remove debugging
Matthew Wild <mwild1@gmail.com>
parents: 6553
diff changeset
89 return function (value)
7b2d16c14659 statsmanager, util.statistics: API changes, remove debugging
Matthew Wild <mwild1@gmail.com>
parents: 6553
diff changeset
90 n_actual_events = n_actual_events + 1;
6649
99fa40d498cc util.statistics: Collect duration sample even if run fewer times than the sample interval
Kim Alvefur <zash@zash.se>
parents: 6562
diff changeset
91 if n_actual_events%duration_sample_interval == 1 then
6555
7b2d16c14659 statsmanager, util.statistics: API changes, remove debugging
Matthew Wild <mwild1@gmail.com>
parents: 6553
diff changeset
92 last_event = (last_event%duration_max_samples) + 1;
7b2d16c14659 statsmanager, util.statistics: API changes, remove debugging
Matthew Wild <mwild1@gmail.com>
parents: 6553
diff changeset
93 events[last_event] = value;
7b2d16c14659 statsmanager, util.statistics: API changes, remove debugging
Matthew Wild <mwild1@gmail.com>
parents: 6553
diff changeset
94 end
7b2d16c14659 statsmanager, util.statistics: API changes, remove debugging
Matthew Wild <mwild1@gmail.com>
parents: 6553
diff changeset
95 end;
7b2d16c14659 statsmanager, util.statistics: API changes, remove debugging
Matthew Wild <mwild1@gmail.com>
parents: 6553
diff changeset
96 end;
7b2d16c14659 statsmanager, util.statistics: API changes, remove debugging
Matthew Wild <mwild1@gmail.com>
parents: 6553
diff changeset
97 sizes = function (name)
7b2d16c14659 statsmanager, util.statistics: API changes, remove debugging
Matthew Wild <mwild1@gmail.com>
parents: 6553
diff changeset
98 return methods.distribution(name, "bytes", "size");
7b2d16c14659 statsmanager, util.statistics: API changes, remove debugging
Matthew Wild <mwild1@gmail.com>
parents: 6553
diff changeset
99 end;
7b2d16c14659 statsmanager, util.statistics: API changes, remove debugging
Matthew Wild <mwild1@gmail.com>
parents: 6553
diff changeset
100 times = function (name)
7b2d16c14659 statsmanager, util.statistics: API changes, remove debugging
Matthew Wild <mwild1@gmail.com>
parents: 6553
diff changeset
101 local events, last_event = {}, 0;
7b2d16c14659 statsmanager, util.statistics: API changes, remove debugging
Matthew Wild <mwild1@gmail.com>
parents: 6553
diff changeset
102 local n_actual_events = 0;
7b2d16c14659 statsmanager, util.statistics: API changes, remove debugging
Matthew Wild <mwild1@gmail.com>
parents: 6553
diff changeset
103 local since = time();
7b2d16c14659 statsmanager, util.statistics: API changes, remove debugging
Matthew Wild <mwild1@gmail.com>
parents: 6553
diff changeset
104
7b2d16c14659 statsmanager, util.statistics: API changes, remove debugging
Matthew Wild <mwild1@gmail.com>
parents: 6553
diff changeset
105 registry[name..":duration"] = function ()
7b2d16c14659 statsmanager, util.statistics: API changes, remove debugging
Matthew Wild <mwild1@gmail.com>
parents: 6553
diff changeset
106 local new_time = time();
7b2d16c14659 statsmanager, util.statistics: API changes, remove debugging
Matthew Wild <mwild1@gmail.com>
parents: 6553
diff changeset
107 local stats = get_distribution_stats(events, n_actual_events, since, new_time, "seconds");
7b2d16c14659 statsmanager, util.statistics: API changes, remove debugging
Matthew Wild <mwild1@gmail.com>
parents: 6553
diff changeset
108 events, last_event = {}, 0;
7b2d16c14659 statsmanager, util.statistics: API changes, remove debugging
Matthew Wild <mwild1@gmail.com>
parents: 6553
diff changeset
109 n_actual_events = 0;
7b2d16c14659 statsmanager, util.statistics: API changes, remove debugging
Matthew Wild <mwild1@gmail.com>
parents: 6553
diff changeset
110 since = new_time;
6553
0e29c05c3503 util.statistics: New library for gathering various kinds of statistics
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
111 return "duration", stats.average, stats;
0e29c05c3503 util.statistics: New library for gathering various kinds of statistics
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
112 end;
0e29c05c3503 util.statistics: New library for gathering various kinds of statistics
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
113
0e29c05c3503 util.statistics: New library for gathering various kinds of statistics
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
114 return function ()
0e29c05c3503 util.statistics: New library for gathering various kinds of statistics
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
115 n_actual_events = n_actual_events + 1;
6649
99fa40d498cc util.statistics: Collect duration sample even if run fewer times than the sample interval
Kim Alvefur <zash@zash.se>
parents: 6562
diff changeset
116 if n_actual_events%duration_sample_interval ~= 1 then
6553
0e29c05c3503 util.statistics: New library for gathering various kinds of statistics
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
117 return nop_function;
0e29c05c3503 util.statistics: New library for gathering various kinds of statistics
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
118 end
0e29c05c3503 util.statistics: New library for gathering various kinds of statistics
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
119
0e29c05c3503 util.statistics: New library for gathering various kinds of statistics
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
120 local start_time = time();
0e29c05c3503 util.statistics: New library for gathering various kinds of statistics
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
121 return function ()
0e29c05c3503 util.statistics: New library for gathering various kinds of statistics
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
122 local end_time = time();
0e29c05c3503 util.statistics: New library for gathering various kinds of statistics
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
123 local duration = end_time - start_time;
0e29c05c3503 util.statistics: New library for gathering various kinds of statistics
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
124 last_event = (last_event%duration_max_samples) + 1;
0e29c05c3503 util.statistics: New library for gathering various kinds of statistics
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
125 events[last_event] = duration;
0e29c05c3503 util.statistics: New library for gathering various kinds of statistics
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
126 end
0e29c05c3503 util.statistics: New library for gathering various kinds of statistics
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
127 end;
0e29c05c3503 util.statistics: New library for gathering various kinds of statistics
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
128 end;
0e29c05c3503 util.statistics: New library for gathering various kinds of statistics
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
129
0e29c05c3503 util.statistics: New library for gathering various kinds of statistics
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
130 get_stats = function ()
0e29c05c3503 util.statistics: New library for gathering various kinds of statistics
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
131 return registry;
0e29c05c3503 util.statistics: New library for gathering various kinds of statistics
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
132 end;
0e29c05c3503 util.statistics: New library for gathering various kinds of statistics
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
133 };
0e29c05c3503 util.statistics: New library for gathering various kinds of statistics
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
134 return methods;
0e29c05c3503 util.statistics: New library for gathering various kinds of statistics
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
135 end
0e29c05c3503 util.statistics: New library for gathering various kinds of statistics
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
136
0e29c05c3503 util.statistics: New library for gathering various kinds of statistics
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
137 return {
0e29c05c3503 util.statistics: New library for gathering various kinds of statistics
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
138 new = new_registry;
0e29c05c3503 util.statistics: New library for gathering various kinds of statistics
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
139 get_histogram = function (duration, n_buckets)
0e29c05c3503 util.statistics: New library for gathering various kinds of statistics
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
140 n_buckets = n_buckets or 100;
0e29c05c3503 util.statistics: New library for gathering various kinds of statistics
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
141 local events, n_events = duration.samples, duration.sample_count;
0e29c05c3503 util.statistics: New library for gathering various kinds of statistics
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
142 if not (events and n_events) then
6555
7b2d16c14659 statsmanager, util.statistics: API changes, remove debugging
Matthew Wild <mwild1@gmail.com>
parents: 6553
diff changeset
143 return nil, "not a valid distribution stat";
6553
0e29c05c3503 util.statistics: New library for gathering various kinds of statistics
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
144 end
0e29c05c3503 util.statistics: New library for gathering various kinds of statistics
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
145 local histogram = {};
0e29c05c3503 util.statistics: New library for gathering various kinds of statistics
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
146
0e29c05c3503 util.statistics: New library for gathering various kinds of statistics
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
147 for i = 1, 100, 100/n_buckets do
0e29c05c3503 util.statistics: New library for gathering various kinds of statistics
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
148 histogram[i] = percentile(events, n_events, i);
0e29c05c3503 util.statistics: New library for gathering various kinds of statistics
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
149 end
0e29c05c3503 util.statistics: New library for gathering various kinds of statistics
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
150 return histogram;
0e29c05c3503 util.statistics: New library for gathering various kinds of statistics
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
151 end;
0e29c05c3503 util.statistics: New library for gathering various kinds of statistics
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
152
0e29c05c3503 util.statistics: New library for gathering various kinds of statistics
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
153 get_percentile = function (duration, pc)
0e29c05c3503 util.statistics: New library for gathering various kinds of statistics
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
154 local events, n_events = duration.samples, duration.sample_count;
0e29c05c3503 util.statistics: New library for gathering various kinds of statistics
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
155 if not (events and n_events) then
6555
7b2d16c14659 statsmanager, util.statistics: API changes, remove debugging
Matthew Wild <mwild1@gmail.com>
parents: 6553
diff changeset
156 return nil, "not a valid distribution stat";
6553
0e29c05c3503 util.statistics: New library for gathering various kinds of statistics
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
157 end
0e29c05c3503 util.statistics: New library for gathering various kinds of statistics
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
158 return percentile(events, n_events, pc);
0e29c05c3503 util.statistics: New library for gathering various kinds of statistics
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
159 end;
0e29c05c3503 util.statistics: New library for gathering various kinds of statistics
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
160 }