Commit | Line | Data |
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3c39a379 JA |
1 | #include <stdio.h> |
2 | #include <stdlib.h> | |
3 | #include "list.h" | |
4 | #include "fio.h" | |
5 | ||
6 | void write_iolog_put(struct thread_data *td, struct io_u *io_u) | |
7 | { | |
a4f4fdd7 | 8 | fprintf(td->iolog_f, "%u,%llu,%lu\n", io_u->ddir, io_u->offset, io_u->buflen); |
3c39a379 JA |
9 | } |
10 | ||
11 | int read_iolog_get(struct thread_data *td, struct io_u *io_u) | |
12 | { | |
13 | struct io_piece *ipo; | |
14 | ||
15 | if (!list_empty(&td->io_log_list)) { | |
16 | ipo = list_entry(td->io_log_list.next, struct io_piece, list); | |
17 | list_del(&ipo->list); | |
18 | io_u->offset = ipo->offset; | |
19 | io_u->buflen = ipo->len; | |
20 | io_u->ddir = ipo->ddir; | |
53cdc686 | 21 | io_u->file = ipo->file; |
3c39a379 JA |
22 | free(ipo); |
23 | return 0; | |
24 | } | |
25 | ||
26 | return 1; | |
27 | } | |
28 | ||
29 | void prune_io_piece_log(struct thread_data *td) | |
30 | { | |
31 | struct io_piece *ipo; | |
4b87898e | 32 | struct rb_node *n; |
3c39a379 | 33 | |
4b87898e JA |
34 | while ((n = rb_first(&td->io_hist_tree)) != NULL) { |
35 | ipo = rb_entry(n, struct io_piece, rb_node); | |
36 | rb_erase(n, &td->io_hist_tree); | |
3c39a379 JA |
37 | free(ipo); |
38 | } | |
39 | } | |
40 | ||
41 | /* | |
34403fb1 | 42 | * log a successful write, so we can unwind the log for verify |
3c39a379 JA |
43 | */ |
44 | void log_io_piece(struct thread_data *td, struct io_u *io_u) | |
45 | { | |
8de8f047 | 46 | struct rb_node **p, *parent; |
4b87898e | 47 | struct io_piece *ipo, *__ipo; |
3c39a379 | 48 | |
4b87898e | 49 | ipo = malloc(sizeof(struct io_piece)); |
53cdc686 | 50 | ipo->file = io_u->file; |
3c39a379 JA |
51 | ipo->offset = io_u->offset; |
52 | ipo->len = io_u->buflen; | |
53 | ||
8de8f047 JA |
54 | /* |
55 | * We don't need to sort the entries, if: | |
56 | * | |
57 | * Sequential writes, or | |
58 | * Random writes that lay out the file as it goes along | |
59 | * | |
60 | * For both these cases, just reading back data in the order we | |
61 | * wrote it out is the fastest. | |
62 | */ | |
160b966d JA |
63 | if (!td_random(td) || !td->o.overwrite || |
64 | (io_u->file->flags & FIO_FILE_NOSORT)) { | |
8de8f047 JA |
65 | INIT_LIST_HEAD(&ipo->list); |
66 | list_add_tail(&ipo->list, &td->io_hist_list); | |
67 | return; | |
68 | } | |
69 | ||
70 | RB_CLEAR_NODE(&ipo->rb_node); | |
71 | p = &td->io_hist_tree.rb_node; | |
72 | parent = NULL; | |
73 | ||
3c39a379 | 74 | /* |
4b87898e | 75 | * Sort the entry into the verification list |
3c39a379 | 76 | */ |
4b87898e JA |
77 | while (*p) { |
78 | parent = *p; | |
79 | ||
80 | __ipo = rb_entry(parent, struct io_piece, rb_node); | |
bb5d7d0b | 81 | if (ipo->offset <= __ipo->offset) |
4b87898e | 82 | p = &(*p)->rb_left; |
4b87898e | 83 | else |
bb5d7d0b | 84 | p = &(*p)->rb_right; |
3c39a379 JA |
85 | } |
86 | ||
4b87898e JA |
87 | rb_link_node(&ipo->rb_node, parent, p); |
88 | rb_insert_color(&ipo->rb_node, &td->io_hist_tree); | |
3c39a379 JA |
89 | } |
90 | ||
91 | void write_iolog_close(struct thread_data *td) | |
92 | { | |
93 | fflush(td->iolog_f); | |
94 | fclose(td->iolog_f); | |
95 | free(td->iolog_buf); | |
96 | } | |
97 | ||
fb71fbd7 JA |
98 | /* |
99 | * Open a stored log and read in the entries. | |
100 | */ | |
101 | static int init_iolog_read(struct thread_data *td) | |
3c39a379 JA |
102 | { |
103 | unsigned long long offset; | |
104 | unsigned int bytes; | |
105 | char *str, *p; | |
106 | FILE *f; | |
fb71fbd7 | 107 | int rw, reads, writes; |
3c39a379 | 108 | |
2dc1bbeb | 109 | f = fopen(td->o.read_iolog_file, "r"); |
3c39a379 | 110 | if (!f) { |
fb71fbd7 | 111 | perror("fopen read iolog"); |
3c39a379 JA |
112 | return 1; |
113 | } | |
114 | ||
3c39a379 JA |
115 | /* |
116 | * Read in the read iolog and store it, reuse the infrastructure | |
117 | * for doing verifications. | |
118 | */ | |
119 | str = malloc(4096); | |
fb71fbd7 | 120 | reads = writes = 0; |
3c39a379 JA |
121 | while ((p = fgets(str, 4096, f)) != NULL) { |
122 | struct io_piece *ipo; | |
123 | ||
124 | if (sscanf(p, "%d,%llu,%u", &rw, &offset, &bytes) != 3) { | |
3b70d7e5 | 125 | log_err("bad iolog: %s\n", p); |
3c39a379 JA |
126 | continue; |
127 | } | |
128 | if (rw == DDIR_READ) | |
129 | reads++; | |
130 | else if (rw == DDIR_WRITE) | |
131 | writes++; | |
c38e9468 | 132 | else if (rw != DDIR_SYNC) { |
3b70d7e5 | 133 | log_err("bad ddir: %d\n", rw); |
3c39a379 JA |
134 | continue; |
135 | } | |
136 | ||
137 | ipo = malloc(sizeof(*ipo)); | |
138 | INIT_LIST_HEAD(&ipo->list); | |
139 | ipo->offset = offset; | |
140 | ipo->len = bytes; | |
1e97cce9 | 141 | ipo->ddir = (enum fio_ddir) rw; |
2dc1bbeb JA |
142 | if (bytes > td->o.max_bs[rw]) |
143 | td->o.max_bs[rw] = bytes; | |
3c39a379 | 144 | list_add_tail(&ipo->list, &td->io_log_list); |
3c39a379 JA |
145 | } |
146 | ||
147 | free(str); | |
148 | fclose(f); | |
149 | ||
fb71fbd7 | 150 | if (!reads && !writes) |
3c39a379 | 151 | return 1; |
fb71fbd7 | 152 | else if (reads && !writes) |
2dc1bbeb | 153 | td->o.td_ddir = TD_DDIR_READ; |
3c39a379 | 154 | else if (!reads && writes) |
2dc1bbeb | 155 | td->o.td_ddir = TD_DDIR_READ; |
3c39a379 | 156 | else |
2dc1bbeb | 157 | td->o.td_ddir = TD_DDIR_RW; |
3c39a379 JA |
158 | |
159 | return 0; | |
160 | } | |
8914a9d8 | 161 | |
fb71fbd7 JA |
162 | /* |
163 | * Setup a log for storing io patterns. | |
164 | */ | |
165 | static int init_iolog_write(struct thread_data *td) | |
166 | { | |
076efc7c | 167 | FILE *f; |
fb71fbd7 | 168 | |
2dc1bbeb | 169 | f = fopen(td->o.write_iolog_file, "w+"); |
fb71fbd7 JA |
170 | if (!f) { |
171 | perror("fopen write iolog"); | |
172 | return 1; | |
173 | } | |
174 | ||
175 | /* | |
176 | * That's it for writing, setup a log buffer and we're done. | |
177 | */ | |
178 | td->iolog_f = f; | |
179 | td->iolog_buf = malloc(8192); | |
180 | setvbuf(f, td->iolog_buf, _IOFBF, 8192); | |
181 | return 0; | |
182 | } | |
183 | ||
184 | int init_iolog(struct thread_data *td) | |
185 | { | |
b4a6a59a JA |
186 | int ret = 0; |
187 | ||
ba0fbe10 | 188 | if (td->io_ops->flags & FIO_DISKLESSIO) |
f48b467c JA |
189 | return 0; |
190 | ||
2dc1bbeb | 191 | if (td->o.read_iolog_file) |
b4a6a59a | 192 | ret = init_iolog_read(td); |
2dc1bbeb | 193 | else if (td->o.write_iolog_file) |
b4a6a59a | 194 | ret = init_iolog_write(td); |
fb71fbd7 | 195 | |
1e97cce9 | 196 | return ret; |
fb71fbd7 JA |
197 | } |
198 | ||
8914a9d8 JA |
199 | void setup_log(struct io_log **log) |
200 | { | |
201 | struct io_log *l = malloc(sizeof(*l)); | |
202 | ||
203 | l->nr_samples = 0; | |
204 | l->max_samples = 1024; | |
205 | l->log = malloc(l->max_samples * sizeof(struct io_sample)); | |
206 | *log = l; | |
207 | } | |
208 | ||
bb3884d8 | 209 | void __finish_log(struct io_log *log, const char *name) |
8914a9d8 | 210 | { |
8914a9d8 | 211 | unsigned int i; |
bb3884d8 | 212 | FILE *f; |
8914a9d8 | 213 | |
bb3884d8 | 214 | f = fopen(name, "w"); |
8914a9d8 JA |
215 | if (!f) { |
216 | perror("fopen log"); | |
217 | return; | |
218 | } | |
219 | ||
220 | for (i = 0; i < log->nr_samples; i++) | |
221 | fprintf(f, "%lu, %lu, %u\n", log->log[i].time, log->log[i].val, log->log[i].ddir); | |
222 | ||
223 | fclose(f); | |
224 | free(log->log); | |
225 | free(log); | |
226 | } | |
bb3884d8 JA |
227 | |
228 | void finish_log(struct thread_data *td, struct io_log *log, const char *name) | |
229 | { | |
230 | char file_name[256]; | |
231 | ||
232 | snprintf(file_name, 200, "client%d_%s.log", td->thread_number, name); | |
233 | __finish_log(log, file_name); | |
234 | } |