Repository navigation
Expand file tree
/
Copy pathobd.go
More file actions
116 lines (107 loc) · 3.84 KB
/
Copy pathobd.go
File metadata and controls
116 lines (107 loc) · 3.84 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
/*
* MinIO Cloud Storage, (C) 2020 MinIO, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package net
import (
"github.com/montanaflynn/stats"
)
// Latency holds latency information for read/write operations to the drive
type Latency struct {
Avg float64 `json:"avg_secs,omitempty"`
Percentile50 float64 `json:"percentile50_secs,omitempty"`
Percentile90 float64 `json:"percentile90_secs,omitempty"`
Percentile99 float64 `json:"percentile99_secs,omitempty"`
Min float64 `json:"min_secs,omitempty"`
Max float64 `json:"max_secs,omitempty"`
}
// Throughput holds throughput information for read/write operations to the drive
type Throughput struct {
Avg float64 `json:"avg_bytes_per_sec,omitempty"`
Percentile50 float64 `json:"percentile50_bytes_per_sec,omitempty"`
Percentile90 float64 `json:"percentile90_bytes_per_sec,omitempty"`
Percentile99 float64 `json:"percentile99_bytes_per_sec,omitempty"`
Min float64 `json:"min_bytes_per_sec,omitempty"`
Max float64 `json:"max_bytes_per_sec,omitempty"`
}
// ComputeOBDStats takes arrays of Latency & Throughput to compute Statistics
func ComputeOBDStats(latencies, throughputs []float64) (Latency, Throughput, error) {
var avgLatency float64
var percentile50Latency float64
var percentile90Latency float64
var percentile99Latency float64
var minLatency float64
var maxLatency float64
var avgThroughput float64
var percentile50Throughput float64
var percentile90Throughput float64
var percentile99Throughput float64
var minThroughput float64
var maxThroughput float64
var err error
if avgLatency, err = stats.Mean(latencies); err != nil {
return Latency{}, Throughput{}, err
}
if percentile50Latency, err = stats.Percentile(latencies, 50); err != nil {
return Latency{}, Throughput{}, err
}
if percentile90Latency, err = stats.Percentile(latencies, 90); err != nil {
return Latency{}, Throughput{}, err
}
if percentile99Latency, err = stats.Percentile(latencies, 99); err != nil {
return Latency{}, Throughput{}, err
}
if maxLatency, err = stats.Max(latencies); err != nil {
return Latency{}, Throughput{}, err
}
if minLatency, err = stats.Min(latencies); err != nil {
return Latency{}, Throughput{}, err
}
l := Latency{
Avg: avgLatency,
Percentile50: percentile50Latency,
Percentile90: percentile90Latency,
Percentile99: percentile99Latency,
Min: minLatency,
Max: maxLatency,
}
if avgThroughput, err = stats.Mean(throughputs); err != nil {
return Latency{}, Throughput{}, err
}
if percentile50Throughput, err = stats.Percentile(throughputs, 50); err != nil {
return Latency{}, Throughput{}, err
}
if percentile90Throughput, err = stats.Percentile(throughputs, 90); err != nil {
return Latency{}, Throughput{}, err
}
if percentile99Throughput, err = stats.Percentile(throughputs, 99); err != nil {
return Latency{}, Throughput{}, err
}
if maxThroughput, err = stats.Max(throughputs); err != nil {
return Latency{}, Throughput{}, err
}
if minThroughput, err = stats.Min(throughputs); err != nil {
return Latency{}, Throughput{}, err
}
t := Throughput{
Avg: avgThroughput,
Percentile50: percentile50Throughput,
Percentile90: percentile90Throughput,
Percentile99: percentile99Throughput,
Min: minThroughput,
Max: maxThroughput,
}
return l, t, nil
}