2 * collectd - src/utils_latency_test.c
3 * Copyright (C) 2015 Florian octo Forster
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6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
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10 * Software is furnished to do so, subject to the following conditions:
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21 * DEALINGS IN THE SOFTWARE.
24 * Florian octo Forster <octo at collectd.org>
27 #define DBL_PRECISION 1e-9
29 #include "common.h" /* for STATIC_ARRAY_SIZE */
33 #include "utils_time.h"
34 #include "utils_latency.h"
45 /* val min max sum avg */
46 {0.5, 0.5, 0.5, 0.5, 0.5},
47 {0.3, 0.3, 0.5, 0.8, 0.4},
48 {0.7, 0.3, 0.7, 1.5, 0.5},
49 {2.5, 0.3, 2.5, 4.0, 1.0},
50 { 99, 0.3, 99, 103, 20.6},
51 /* { -1, 0.3, 99, 103, 20.6}, see issue #1139 */
55 CHECK_NOT_NULL (l = latency_counter_create ());
57 for (size_t i = 0; i < STATIC_ARRAY_SIZE (cases); i++) {
58 printf ("# case %zu: DOUBLE_TO_CDTIME_T(%g) = %"PRIu64"\n",
59 i, cases[i].val, DOUBLE_TO_CDTIME_T (cases[i].val));
60 latency_counter_add (l, DOUBLE_TO_CDTIME_T (cases[i].val));
62 EXPECT_EQ_DOUBLE (cases[i].min, CDTIME_T_TO_DOUBLE (latency_counter_get_min (l)));
63 EXPECT_EQ_DOUBLE (cases[i].max, CDTIME_T_TO_DOUBLE (latency_counter_get_max (l)));
64 EXPECT_EQ_DOUBLE (cases[i].sum, CDTIME_T_TO_DOUBLE (latency_counter_get_sum (l)));
65 EXPECT_EQ_DOUBLE (cases[i].avg, CDTIME_T_TO_DOUBLE (latency_counter_get_average (l)));
68 latency_counter_destroy (l);
76 CHECK_NOT_NULL (l = latency_counter_create ());
78 for (size_t i = 0; i < 100; i++) {
79 latency_counter_add (l, TIME_T_TO_CDTIME_T (((time_t) i) + 1));
82 EXPECT_EQ_DOUBLE ( 1.0, CDTIME_T_TO_DOUBLE (latency_counter_get_min (l)));
83 EXPECT_EQ_DOUBLE (100.0, CDTIME_T_TO_DOUBLE (latency_counter_get_max (l)));
84 EXPECT_EQ_DOUBLE (100.0 * 101.0 / 2.0, CDTIME_T_TO_DOUBLE (latency_counter_get_sum (l)));
85 EXPECT_EQ_DOUBLE ( 50.5, CDTIME_T_TO_DOUBLE (latency_counter_get_average (l)));
87 EXPECT_EQ_DOUBLE (50.0, CDTIME_T_TO_DOUBLE (latency_counter_get_percentile (l, 50.0)));
88 EXPECT_EQ_DOUBLE (80.0, CDTIME_T_TO_DOUBLE (latency_counter_get_percentile (l, 80.0)));
89 EXPECT_EQ_DOUBLE (95.0, CDTIME_T_TO_DOUBLE (latency_counter_get_percentile (l, 95.0)));
90 EXPECT_EQ_DOUBLE (99.0, CDTIME_T_TO_DOUBLE (latency_counter_get_percentile (l, 99.0)));
92 CHECK_ZERO (latency_counter_get_percentile (l, -1.0));
93 CHECK_ZERO (latency_counter_get_percentile (l, 101.0));
95 latency_counter_destroy (l);
102 RUN_TEST(percentile);
107 /* vim: set sw=2 sts=2 et : */