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
|
/*
simple ctdb benchmark
Copyright (C) Andrew Tridgell 2006
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "includes.h"
#include "lib/events/events.h"
#include "system/filesys.h"
#include "popt.h"
#include "cmdline.h"
#include <sys/time.h>
#include <time.h>
static struct timeval tp1,tp2;
static void start_timer(void)
{
gettimeofday(&tp1,NULL);
}
static double end_timer(void)
{
gettimeofday(&tp2,NULL);
return (tp2.tv_sec + (tp2.tv_usec*1.0e-6)) -
(tp1.tv_sec + (tp1.tv_usec*1.0e-6));
}
static int timelimit = 10;
static int num_records = 10;
static int num_msgs = 1;
enum my_functions {FUNC_INCR=1, FUNC_FETCH=2};
/*
ctdb call function to increment an integer
*/
static int incr_func(struct ctdb_call_info *call)
{
if (call->record_data.dsize == 0) {
call->new_data = talloc(call, TDB_DATA);
if (call->new_data == NULL) {
return CTDB_ERR_NOMEM;
}
call->new_data->dptr = talloc_size(call, 4);
call->new_data->dsize = 4;
*(uint32_t *)call->new_data->dptr = 0;
} else {
call->new_data = &call->record_data;
}
(*(uint32_t *)call->new_data->dptr)++;
return 0;
}
/*
ctdb call function to fetch a record
*/
static int fetch_func(struct ctdb_call_info *call)
{
call->reply_data = &call->record_data;
return 0;
}
static int msg_count;
static int msg_plus, msg_minus;
/*
handler for messages in bench_ring()
*/
static void ring_message_handler(struct ctdb_context *ctdb, uint32_t srvid,
TDB_DATA data, void *private_data)
{
int incr = *(int *)data.dptr;
int *count = (int *)private_data;
int dest;
(*count)++;
dest = (ctdb_get_vnn(ctdb) + incr) % ctdb_get_num_nodes(ctdb);
ctdb_send_message(ctdb, dest, srvid, data);
if (incr == 1) {
msg_plus++;
} else {
msg_minus++;
}
}
/*
benchmark sending messages in a ring around the nodes
*/
static void bench_ring(struct ctdb_context *ctdb, struct event_context *ev)
{
int vnn=ctdb_get_vnn(ctdb);
if (vnn == 0) {
int i;
/* two messages are injected into the ring, moving
in opposite directions */
int dest, incr;
TDB_DATA data;
data.dptr = (uint8_t *)&incr;
data.dsize = sizeof(incr);
for (i=0;i<num_msgs;i++) {
incr = 1;
dest = (ctdb_get_vnn(ctdb) + incr) % ctdb_get_num_nodes(ctdb);
ctdb_send_message(ctdb, dest, 0, data);
incr = -1;
dest = (ctdb_get_vnn(ctdb) + incr) % ctdb_get_num_nodes(ctdb);
ctdb_send_message(ctdb, dest, 0, data);
}
}
start_timer();
while (end_timer() < timelimit) {
if (vnn == 0 && msg_count % 10000 == 0) {
printf("Ring: %.2f msgs/sec (+ve=%d -ve=%d)\r",
msg_count/end_timer(), msg_plus, msg_minus);
fflush(stdout);
}
event_loop_once(ev);
}
printf("Ring: %.2f msgs/sec (+ve=%d -ve=%d)\n",
msg_count/end_timer(), msg_plus, msg_minus);
}
/*
main program
*/
int main(int argc, const char *argv[])
{
struct ctdb_context *ctdb;
struct ctdb_db_context *ctdb_db;
struct poptOption popt_options[] = {
POPT_AUTOHELP
POPT_CTDB_CMDLINE
{ "timelimit", 't', POPT_ARG_INT, &timelimit, 0, "timelimit", "integer" },
{ "num-records", 'r', POPT_ARG_INT, &num_records, 0, "num_records", "integer" },
{ "num-msgs", 'n', POPT_ARG_INT, &num_msgs, 0, "num_msgs", "integer" },
POPT_TABLEEND
};
int opt;
const char **extra_argv;
int extra_argc = 0;
int ret;
poptContext pc;
struct event_context *ev;
pc = poptGetContext(argv[0], argc, argv, popt_options, POPT_CONTEXT_KEEP_FIRST);
while ((opt = poptGetNextOpt(pc)) != -1) {
switch (opt) {
default:
fprintf(stderr, "Invalid option %s: %s\n",
poptBadOption(pc, 0), poptStrerror(opt));
exit(1);
}
}
/* setup the remaining options for the main program to use */
extra_argv = poptGetArgs(pc);
if (extra_argv) {
extra_argv++;
while (extra_argv[extra_argc]) extra_argc++;
}
ev = event_context_init(NULL);
/* initialise ctdb */
ctdb = ctdb_cmdline_init(ev);
/* attach to a specific database */
ctdb_db = ctdb_attach(ctdb, "test.tdb", TDB_DEFAULT, O_RDWR|O_CREAT|O_TRUNC, 0666);
if (!ctdb_db) {
printf("ctdb_attach failed - %s\n", ctdb_errstr(ctdb));
exit(1);
}
/* setup a ctdb call function */
ret = ctdb_set_call(ctdb_db, incr_func, FUNC_INCR);
ret = ctdb_set_call(ctdb_db, fetch_func, FUNC_FETCH);
/* start the protocol running */
ret = ctdb_start(ctdb);
ctdb_set_message_handler(ctdb, 0, ring_message_handler,&msg_count);
/* wait until all nodes are connected (should not be needed
outside of test code) */
ctdb_connect_wait(ctdb);
bench_ring(ctdb, ev);
/* shut it down */
ctdb_shutdown(ctdb);
return 0;
}
|
