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
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
|
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or https://opensource.org/licenses/CDDL-1.0.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright (C) 2016 Gvozden Nešković. All rights reserved.
*/
#include <sys/zfs_context.h>
#include <sys/time.h>
#include <sys/wait.h>
#include <sys/zio.h>
#include <sys/vdev_raidz.h>
#include <sys/vdev_raidz_impl.h>
#include <stdio.h>
#include "raidz_test.h"
#define GEN_BENCH_MEMORY (((uint64_t)1ULL)<<32)
#define REC_BENCH_MEMORY (((uint64_t)1ULL)<<29)
#define BENCH_ASHIFT 12
#define MIN_CS_SHIFT BENCH_ASHIFT
#define MAX_CS_SHIFT SPA_MAXBLOCKSHIFT
static zio_t zio_bench;
static raidz_map_t *rm_bench;
static size_t max_data_size = SPA_MAXBLOCKSIZE;
static void
bench_init_raidz_map(void)
{
zio_bench.io_offset = 0;
zio_bench.io_size = max_data_size;
/*
* To permit larger column sizes these have to be done
* allocated using aligned alloc instead of zio_abd_buf_alloc
*/
zio_bench.io_abd = raidz_alloc(max_data_size);
init_zio_abd(&zio_bench);
}
static void
bench_fini_raidz_maps(void)
{
/* tear down golden zio */
raidz_free(zio_bench.io_abd, max_data_size);
memset(&zio_bench, 0, sizeof (zio_t));
}
static inline void
run_gen_bench_impl(const char *impl)
{
int fn, ncols;
uint64_t ds, iter_cnt, iter, disksize;
hrtime_t start;
double elapsed, d_bw;
/* Benchmark generate functions */
for (fn = 0; fn < RAIDZ_GEN_NUM; fn++) {
for (ds = MIN_CS_SHIFT; ds <= MAX_CS_SHIFT; ds++) {
/* create suitable raidz_map */
ncols = rto_opts.rto_dcols + fn + 1;
zio_bench.io_size = 1ULL << ds;
if (rto_opts.rto_expand) {
rm_bench = vdev_raidz_map_alloc_expanded(
&zio_bench,
rto_opts.rto_ashift, ncols+1, ncols,
fn+1, rto_opts.rto_expand_offset,
0, B_FALSE);
} else {
rm_bench = vdev_raidz_map_alloc(&zio_bench,
BENCH_ASHIFT, ncols, fn+1);
}
/* estimate iteration count */
iter_cnt = GEN_BENCH_MEMORY;
iter_cnt /= zio_bench.io_size;
start = gethrtime();
for (iter = 0; iter < iter_cnt; iter++)
vdev_raidz_generate_parity(rm_bench);
elapsed = NSEC2SEC((double)(gethrtime() - start));
disksize = (1ULL << ds) / rto_opts.rto_dcols;
d_bw = (double)iter_cnt * (double)disksize;
d_bw /= (1024.0 * 1024.0 * elapsed);
LOG(D_ALL, "%10s, %8s, %zu, %10llu, %lf, %lf, %u\n",
impl,
raidz_gen_name[fn],
rto_opts.rto_dcols,
(1ULL<<ds),
d_bw,
d_bw * (double)(ncols),
(unsigned)iter_cnt);
vdev_raidz_map_free(rm_bench);
}
}
}
static void
run_gen_bench(void)
{
char **impl_name;
LOG(D_INFO, DBLSEP "\nBenchmarking parity generation...\n\n");
LOG(D_ALL, "impl, math, dcols, iosize, disk_bw, total_bw, iter\n");
for (impl_name = (char **)raidz_impl_names; *impl_name != NULL;
impl_name++) {
if (vdev_raidz_impl_set(*impl_name) != 0)
continue;
run_gen_bench_impl(*impl_name);
}
}
static void
run_rec_bench_impl(const char *impl)
{
int fn, ncols, nbad;
uint64_t ds, iter_cnt, iter, disksize;
hrtime_t start;
double elapsed, d_bw;
static const int tgt[7][3] = {
{1, 2, 3}, /* rec_p: bad QR & D[0] */
{0, 2, 3}, /* rec_q: bad PR & D[0] */
{0, 1, 3}, /* rec_r: bad PQ & D[0] */
{2, 3, 4}, /* rec_pq: bad R & D[0][1] */
{1, 3, 4}, /* rec_pr: bad Q & D[0][1] */
{0, 3, 4}, /* rec_qr: bad P & D[0][1] */
{3, 4, 5} /* rec_pqr: bad & D[0][1][2] */
};
for (fn = 0; fn < RAIDZ_REC_NUM; fn++) {
for (ds = MIN_CS_SHIFT; ds <= MAX_CS_SHIFT; ds++) {
/* create suitable raidz_map */
ncols = rto_opts.rto_dcols + PARITY_PQR;
zio_bench.io_size = 1ULL << ds;
/*
* raidz block is too short to test
* the requested method
*/
if (zio_bench.io_size / rto_opts.rto_dcols <
(1ULL << BENCH_ASHIFT))
continue;
if (rto_opts.rto_expand) {
rm_bench = vdev_raidz_map_alloc_expanded(
&zio_bench,
BENCH_ASHIFT, ncols+1, ncols,
PARITY_PQR,
rto_opts.rto_expand_offset, 0, B_FALSE);
} else {
rm_bench = vdev_raidz_map_alloc(&zio_bench,
BENCH_ASHIFT, ncols, PARITY_PQR);
}
/* estimate iteration count */
iter_cnt = (REC_BENCH_MEMORY);
iter_cnt /= zio_bench.io_size;
/* calculate how many bad columns there are */
nbad = MIN(3, raidz_ncols(rm_bench) -
raidz_parity(rm_bench));
start = gethrtime();
for (iter = 0; iter < iter_cnt; iter++)
vdev_raidz_reconstruct(rm_bench, tgt[fn], nbad);
elapsed = NSEC2SEC((double)(gethrtime() - start));
disksize = (1ULL << ds) / rto_opts.rto_dcols;
d_bw = (double)iter_cnt * (double)(disksize);
d_bw /= (1024.0 * 1024.0 * elapsed);
LOG(D_ALL, "%10s, %8s, %zu, %10llu, %lf, %lf, %u\n",
impl,
raidz_rec_name[fn],
rto_opts.rto_dcols,
(1ULL<<ds),
d_bw,
d_bw * (double)ncols,
(unsigned)iter_cnt);
vdev_raidz_map_free(rm_bench);
}
}
}
static void
run_rec_bench(void)
{
char **impl_name;
LOG(D_INFO, DBLSEP "\nBenchmarking data reconstruction...\n\n");
LOG(D_ALL, "impl, math, dcols, iosize, disk_bw, total_bw, iter\n");
for (impl_name = (char **)raidz_impl_names; *impl_name != NULL;
impl_name++) {
if (vdev_raidz_impl_set(*impl_name) != 0)
continue;
run_rec_bench_impl(*impl_name);
}
}
void
run_raidz_benchmark(void)
{
bench_init_raidz_map();
run_gen_bench();
run_rec_bench();
bench_fini_raidz_maps();
}
|
