prosody
21730a3642fe
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 @ 9070:21730a3642fe

Merge 0.10->trunk
author Matthew Wild <mwild1@gmail.com>
date Mon, 30 Jul 2018 15:13:54 +0100
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 }