Commit | Line | Data |
---|---|---|
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 | { | |
4b87898e JA |
46 | struct rb_node **p = &td->io_hist_tree.rb_node; |
47 | struct rb_node *parent = NULL; | |
48 | struct io_piece *ipo, *__ipo; | |
3c39a379 | 49 | |
4b87898e | 50 | ipo = malloc(sizeof(struct io_piece)); |
bb5d7d0b | 51 | RB_CLEAR_NODE(&ipo->rb_node); |
53cdc686 | 52 | ipo->file = io_u->file; |
3c39a379 JA |
53 | ipo->offset = io_u->offset; |
54 | ipo->len = io_u->buflen; | |
55 | ||
56 | /* | |
4b87898e | 57 | * Sort the entry into the verification list |
3c39a379 | 58 | */ |
4b87898e JA |
59 | while (*p) { |
60 | parent = *p; | |
61 | ||
62 | __ipo = rb_entry(parent, struct io_piece, rb_node); | |
bb5d7d0b | 63 | if (ipo->offset <= __ipo->offset) |
4b87898e | 64 | p = &(*p)->rb_left; |
4b87898e | 65 | else |
bb5d7d0b | 66 | p = &(*p)->rb_right; |
3c39a379 JA |
67 | } |
68 | ||
4b87898e JA |
69 | rb_link_node(&ipo->rb_node, parent, p); |
70 | rb_insert_color(&ipo->rb_node, &td->io_hist_tree); | |
3c39a379 JA |
71 | } |
72 | ||
73 | void write_iolog_close(struct thread_data *td) | |
74 | { | |
75 | fflush(td->iolog_f); | |
76 | fclose(td->iolog_f); | |
77 | free(td->iolog_buf); | |
78 | } | |
79 | ||
fb71fbd7 JA |
80 | /* |
81 | * Open a stored log and read in the entries. | |
82 | */ | |
83 | static int init_iolog_read(struct thread_data *td) | |
3c39a379 JA |
84 | { |
85 | unsigned long long offset; | |
86 | unsigned int bytes; | |
87 | char *str, *p; | |
88 | FILE *f; | |
fb71fbd7 | 89 | int rw, reads, writes; |
3c39a379 | 90 | |
2dc1bbeb | 91 | f = fopen(td->o.read_iolog_file, "r"); |
3c39a379 | 92 | if (!f) { |
fb71fbd7 | 93 | perror("fopen read iolog"); |
3c39a379 JA |
94 | return 1; |
95 | } | |
96 | ||
3c39a379 JA |
97 | /* |
98 | * Read in the read iolog and store it, reuse the infrastructure | |
99 | * for doing verifications. | |
100 | */ | |
101 | str = malloc(4096); | |
fb71fbd7 | 102 | reads = writes = 0; |
3c39a379 JA |
103 | while ((p = fgets(str, 4096, f)) != NULL) { |
104 | struct io_piece *ipo; | |
105 | ||
106 | if (sscanf(p, "%d,%llu,%u", &rw, &offset, &bytes) != 3) { | |
3b70d7e5 | 107 | log_err("bad iolog: %s\n", p); |
3c39a379 JA |
108 | continue; |
109 | } | |
110 | if (rw == DDIR_READ) | |
111 | reads++; | |
112 | else if (rw == DDIR_WRITE) | |
113 | writes++; | |
c38e9468 | 114 | else if (rw != DDIR_SYNC) { |
3b70d7e5 | 115 | log_err("bad ddir: %d\n", rw); |
3c39a379 JA |
116 | continue; |
117 | } | |
118 | ||
119 | ipo = malloc(sizeof(*ipo)); | |
120 | INIT_LIST_HEAD(&ipo->list); | |
121 | ipo->offset = offset; | |
122 | ipo->len = bytes; | |
1e97cce9 | 123 | ipo->ddir = (enum fio_ddir) rw; |
2dc1bbeb JA |
124 | if (bytes > td->o.max_bs[rw]) |
125 | td->o.max_bs[rw] = bytes; | |
3c39a379 | 126 | list_add_tail(&ipo->list, &td->io_log_list); |
3c39a379 JA |
127 | } |
128 | ||
129 | free(str); | |
130 | fclose(f); | |
131 | ||
fb71fbd7 | 132 | if (!reads && !writes) |
3c39a379 | 133 | return 1; |
fb71fbd7 | 134 | else if (reads && !writes) |
2dc1bbeb | 135 | td->o.td_ddir = TD_DDIR_READ; |
3c39a379 | 136 | else if (!reads && writes) |
2dc1bbeb | 137 | td->o.td_ddir = TD_DDIR_READ; |
3c39a379 | 138 | else |
2dc1bbeb | 139 | td->o.td_ddir = TD_DDIR_RW; |
3c39a379 JA |
140 | |
141 | return 0; | |
142 | } | |
8914a9d8 | 143 | |
fb71fbd7 JA |
144 | /* |
145 | * Setup a log for storing io patterns. | |
146 | */ | |
147 | static int init_iolog_write(struct thread_data *td) | |
148 | { | |
076efc7c | 149 | FILE *f; |
fb71fbd7 | 150 | |
2dc1bbeb | 151 | f = fopen(td->o.write_iolog_file, "w+"); |
fb71fbd7 JA |
152 | if (!f) { |
153 | perror("fopen write iolog"); | |
154 | return 1; | |
155 | } | |
156 | ||
157 | /* | |
158 | * That's it for writing, setup a log buffer and we're done. | |
159 | */ | |
160 | td->iolog_f = f; | |
161 | td->iolog_buf = malloc(8192); | |
162 | setvbuf(f, td->iolog_buf, _IOFBF, 8192); | |
163 | return 0; | |
164 | } | |
165 | ||
166 | int init_iolog(struct thread_data *td) | |
167 | { | |
b4a6a59a JA |
168 | int ret = 0; |
169 | ||
ba0fbe10 | 170 | if (td->io_ops->flags & FIO_DISKLESSIO) |
f48b467c JA |
171 | return 0; |
172 | ||
2dc1bbeb | 173 | if (td->o.read_iolog_file) |
b4a6a59a | 174 | ret = init_iolog_read(td); |
2dc1bbeb | 175 | else if (td->o.write_iolog_file) |
b4a6a59a | 176 | ret = init_iolog_write(td); |
fb71fbd7 | 177 | |
1e97cce9 | 178 | return ret; |
fb71fbd7 JA |
179 | } |
180 | ||
8914a9d8 JA |
181 | void setup_log(struct io_log **log) |
182 | { | |
183 | struct io_log *l = malloc(sizeof(*l)); | |
184 | ||
185 | l->nr_samples = 0; | |
186 | l->max_samples = 1024; | |
187 | l->log = malloc(l->max_samples * sizeof(struct io_sample)); | |
188 | *log = l; | |
189 | } | |
190 | ||
bb3884d8 | 191 | void __finish_log(struct io_log *log, const char *name) |
8914a9d8 | 192 | { |
8914a9d8 | 193 | unsigned int i; |
bb3884d8 | 194 | FILE *f; |
8914a9d8 | 195 | |
bb3884d8 | 196 | f = fopen(name, "w"); |
8914a9d8 JA |
197 | if (!f) { |
198 | perror("fopen log"); | |
199 | return; | |
200 | } | |
201 | ||
202 | for (i = 0; i < log->nr_samples; i++) | |
203 | fprintf(f, "%lu, %lu, %u\n", log->log[i].time, log->log[i].val, log->log[i].ddir); | |
204 | ||
205 | fclose(f); | |
206 | free(log->log); | |
207 | free(log); | |
208 | } | |
bb3884d8 JA |
209 | |
210 | void finish_log(struct thread_data *td, struct io_log *log, const char *name) | |
211 | { | |
212 | char file_name[256]; | |
213 | ||
214 | snprintf(file_name, 200, "client%d_%s.log", td->thread_number, name); | |
215 | __finish_log(log, file_name); | |
216 | } |