1 /*
2 * Copyright (C) 2017, Google Inc. and others
3 *
4 * This program and the accompanying materials are made available under the
5 * terms of the Eclipse Distribution License v. 1.0 which is available at
6 * https://www.eclipse.org/org/documents/edl-v10.php.
7 *
8 * SPDX-License-Identifier: BSD-3-Clause
9 */
10
11 package org.eclipse.jgit.internal.storage.dfs;
12
13 /**
14 * IO statistics for a {@link org.eclipse.jgit.internal.storage.dfs.DfsReader}.
15 */
16 public class DfsReaderIoStats {
17 /** POJO to accumulate IO statistics. */
18 public static class Accumulator {
19 /** Number of times the reader explicitly called scanPacks. */
20 long scanPacks;
21
22 /** Total number of complete pack indexes read into memory. */
23 long readIdx;
24
25 /** Total number of complete bitmap indexes read into memory. */
26 long readBitmap;
27
28 /** Total number of bytes read from indexes. */
29 long readIdxBytes;
30
31 /** Total microseconds spent reading pack or bitmap indexes. */
32 long readIdxMicros;
33
34 /** Total number of block cache hits. */
35 long blockCacheHit;
36
37 /**
38 * Total number of discrete blocks actually read from pack file(s), that is,
39 * block cache misses.
40 */
41 long readBlock;
42
43 /**
44 * Total number of compressed bytes read during cache misses, as block sized
45 * units.
46 */
47 long readBlockBytes;
48
49 /** Total microseconds spent reading {@link #readBlock} blocks. */
50 long readBlockMicros;
51
52 /** Total number of bytes decompressed. */
53 long inflatedBytes;
54
55 /** Total microseconds spent inflating compressed bytes. */
56 long inflationMicros;
57
58 Accumulator() {
59 }
60 }
61
62 private final Accumulator stats;
63
64 DfsReaderIoStats(Accumulator stats) {
65 this.stats = stats;
66 }
67
68 /**
69 * Get number of times the reader explicitly called scanPacks.
70 *
71 * @return number of times the reader explicitly called scanPacks.
72 */
73 public long getScanPacks() {
74 return stats.scanPacks;
75 }
76
77 /**
78 * Get total number of complete pack indexes read into memory.
79 *
80 * @return total number of complete pack indexes read into memory.
81 */
82 public long getReadPackIndexCount() {
83 return stats.readIdx;
84 }
85
86 /**
87 * Get total number of complete bitmap indexes read into memory.
88 *
89 * @return total number of complete bitmap indexes read into memory.
90 */
91 public long getReadBitmapIndexCount() {
92 return stats.readBitmap;
93 }
94
95 /**
96 * Get total number of bytes read from indexes.
97 *
98 * @return total number of bytes read from indexes.
99 */
100 public long getReadIndexBytes() {
101 return stats.readIdxBytes;
102 }
103
104 /**
105 * Get total microseconds spent reading pack or bitmap indexes.
106 *
107 * @return total microseconds spent reading pack or bitmap indexes.
108 */
109 public long getReadIndexMicros() {
110 return stats.readIdxMicros;
111 }
112
113 /**
114 * Get total number of block cache hits.
115 *
116 * @return total number of block cache hits.
117 */
118 public long getBlockCacheHits() {
119 return stats.blockCacheHit;
120 }
121
122 /**
123 * Get total number of discrete blocks actually read from pack file(s), that
124 * is, block cache misses.
125 *
126 * @return total number of discrete blocks read from pack file(s).
127 */
128 public long getReadBlocksCount() {
129 return stats.readBlock;
130 }
131
132 /**
133 * Get total number of compressed bytes read during cache misses, as block
134 * sized units.
135 *
136 * @return total number of compressed bytes read as block sized units.
137 */
138 public long getReadBlocksBytes() {
139 return stats.readBlockBytes;
140 }
141
142 /**
143 * Get total microseconds spent reading blocks during cache misses.
144 *
145 * @return total microseconds spent reading blocks.
146 */
147 public long getReadBlocksMicros() {
148 return stats.readBlockMicros;
149 }
150
151 /**
152 * Get total number of bytes decompressed.
153 *
154 * @return total number of bytes decompressed.
155 */
156 public long getInflatedBytes() {
157 return stats.inflatedBytes;
158 }
159
160 /**
161 * Get total microseconds spent inflating compressed bytes.
162 *
163 * @return total microseconds inflating compressed bytes.
164 */
165 public long getInflationMicros() {
166 return stats.inflationMicros;
167 }
168 }