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 | { | |
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 JA |
50 | ipo = malloc(sizeof(struct io_piece)); |
51 | memset(&ipo->rb_node, 0, sizeof(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); | |
63 | if (ipo->offset < __ipo->offset) | |
64 | p = &(*p)->rb_left; | |
65 | else if (ipo->offset > __ipo->offset) | |
66 | p = &(*p)->rb_right; | |
67 | else | |
3c39a379 JA |
68 | break; |
69 | } | |
70 | ||
4b87898e JA |
71 | rb_link_node(&ipo->rb_node, parent, p); |
72 | rb_insert_color(&ipo->rb_node, &td->io_hist_tree); | |
3c39a379 JA |
73 | } |
74 | ||
75 | void write_iolog_close(struct thread_data *td) | |
76 | { | |
77 | fflush(td->iolog_f); | |
78 | fclose(td->iolog_f); | |
79 | free(td->iolog_buf); | |
80 | } | |
81 | ||
fb71fbd7 JA |
82 | /* |
83 | * Open a stored log and read in the entries. | |
84 | */ | |
85 | static int init_iolog_read(struct thread_data *td) | |
3c39a379 JA |
86 | { |
87 | unsigned long long offset; | |
88 | unsigned int bytes; | |
89 | char *str, *p; | |
90 | FILE *f; | |
fb71fbd7 | 91 | int rw, reads, writes; |
3c39a379 | 92 | |
2dc1bbeb | 93 | f = fopen(td->o.read_iolog_file, "r"); |
3c39a379 | 94 | if (!f) { |
fb71fbd7 | 95 | perror("fopen read iolog"); |
3c39a379 JA |
96 | return 1; |
97 | } | |
98 | ||
3c39a379 JA |
99 | /* |
100 | * Read in the read iolog and store it, reuse the infrastructure | |
101 | * for doing verifications. | |
102 | */ | |
103 | str = malloc(4096); | |
fb71fbd7 | 104 | reads = writes = 0; |
3c39a379 JA |
105 | while ((p = fgets(str, 4096, f)) != NULL) { |
106 | struct io_piece *ipo; | |
107 | ||
108 | if (sscanf(p, "%d,%llu,%u", &rw, &offset, &bytes) != 3) { | |
3b70d7e5 | 109 | log_err("bad iolog: %s\n", p); |
3c39a379 JA |
110 | continue; |
111 | } | |
112 | if (rw == DDIR_READ) | |
113 | reads++; | |
114 | else if (rw == DDIR_WRITE) | |
115 | writes++; | |
c38e9468 | 116 | else if (rw != DDIR_SYNC) { |
3b70d7e5 | 117 | log_err("bad ddir: %d\n", rw); |
3c39a379 JA |
118 | continue; |
119 | } | |
120 | ||
121 | ipo = malloc(sizeof(*ipo)); | |
122 | INIT_LIST_HEAD(&ipo->list); | |
123 | ipo->offset = offset; | |
124 | ipo->len = bytes; | |
1e97cce9 | 125 | ipo->ddir = (enum fio_ddir) rw; |
2dc1bbeb JA |
126 | if (bytes > td->o.max_bs[rw]) |
127 | td->o.max_bs[rw] = bytes; | |
3c39a379 | 128 | list_add_tail(&ipo->list, &td->io_log_list); |
3c39a379 JA |
129 | } |
130 | ||
131 | free(str); | |
132 | fclose(f); | |
133 | ||
fb71fbd7 | 134 | if (!reads && !writes) |
3c39a379 | 135 | return 1; |
fb71fbd7 | 136 | else if (reads && !writes) |
2dc1bbeb | 137 | td->o.td_ddir = TD_DDIR_READ; |
3c39a379 | 138 | else if (!reads && writes) |
2dc1bbeb | 139 | td->o.td_ddir = TD_DDIR_READ; |
3c39a379 | 140 | else |
2dc1bbeb | 141 | td->o.td_ddir = TD_DDIR_RW; |
3c39a379 JA |
142 | |
143 | return 0; | |
144 | } | |
8914a9d8 | 145 | |
fb71fbd7 JA |
146 | /* |
147 | * Setup a log for storing io patterns. | |
148 | */ | |
149 | static int init_iolog_write(struct thread_data *td) | |
150 | { | |
076efc7c | 151 | FILE *f; |
fb71fbd7 | 152 | |
2dc1bbeb | 153 | f = fopen(td->o.write_iolog_file, "w+"); |
fb71fbd7 JA |
154 | if (!f) { |
155 | perror("fopen write iolog"); | |
156 | return 1; | |
157 | } | |
158 | ||
159 | /* | |
160 | * That's it for writing, setup a log buffer and we're done. | |
161 | */ | |
162 | td->iolog_f = f; | |
163 | td->iolog_buf = malloc(8192); | |
164 | setvbuf(f, td->iolog_buf, _IOFBF, 8192); | |
165 | return 0; | |
166 | } | |
167 | ||
168 | int init_iolog(struct thread_data *td) | |
169 | { | |
b4a6a59a JA |
170 | int ret = 0; |
171 | ||
ba0fbe10 | 172 | if (td->io_ops->flags & FIO_DISKLESSIO) |
f48b467c JA |
173 | return 0; |
174 | ||
2dc1bbeb | 175 | if (td->o.read_iolog_file) |
b4a6a59a | 176 | ret = init_iolog_read(td); |
2dc1bbeb | 177 | else if (td->o.write_iolog_file) |
b4a6a59a | 178 | ret = init_iolog_write(td); |
fb71fbd7 | 179 | |
1e97cce9 | 180 | return ret; |
fb71fbd7 JA |
181 | } |
182 | ||
8914a9d8 JA |
183 | void setup_log(struct io_log **log) |
184 | { | |
185 | struct io_log *l = malloc(sizeof(*l)); | |
186 | ||
187 | l->nr_samples = 0; | |
188 | l->max_samples = 1024; | |
189 | l->log = malloc(l->max_samples * sizeof(struct io_sample)); | |
190 | *log = l; | |
191 | } | |
192 | ||
bb3884d8 | 193 | void __finish_log(struct io_log *log, const char *name) |
8914a9d8 | 194 | { |
8914a9d8 | 195 | unsigned int i; |
bb3884d8 | 196 | FILE *f; |
8914a9d8 | 197 | |
bb3884d8 | 198 | f = fopen(name, "w"); |
8914a9d8 JA |
199 | if (!f) { |
200 | perror("fopen log"); | |
201 | return; | |
202 | } | |
203 | ||
204 | for (i = 0; i < log->nr_samples; i++) | |
205 | fprintf(f, "%lu, %lu, %u\n", log->log[i].time, log->log[i].val, log->log[i].ddir); | |
206 | ||
207 | fclose(f); | |
208 | free(log->log); | |
209 | free(log); | |
210 | } | |
bb3884d8 JA |
211 | |
212 | void finish_log(struct thread_data *td, struct io_log *log, const char *name) | |
213 | { | |
214 | char file_name[256]; | |
215 | ||
216 | snprintf(file_name, 200, "client%d_%s.log", td->thread_number, name); | |
217 | __finish_log(log, file_name); | |
218 | } |