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/*
simple ctdb benchmark
Copyright (C) Andrew Tridgell 2006
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
#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_nodes;
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, uint64_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) % num_nodes;
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) {
/* 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);
incr = 1;
dest = (ctdb_get_vnn(ctdb) + incr) % num_nodes;
ctdb_send_message(ctdb, dest, 0, data);
incr = -1;
dest = (ctdb_get_vnn(ctdb) + incr) % num_nodes;
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);
}
/*
handler for reconfigure message
*/
static void reconfigure_handler(struct ctdb_context *ctdb, uint64_t srvid,
TDB_DATA data, void *private_data)
{
int *ready = (int *)private_data;
*ready = 1;
}
/*
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" },
{ NULL, 'n', POPT_ARG_INT, &num_nodes, 0, "num_nodes", "integer" },
POPT_TABLEEND
};
int opt;
const char **extra_argv;
int extra_argc = 0;
int ret;
poptContext pc;
struct event_context *ev;
int cluster_ready=0;
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 = s4_event_context_init(NULL);
/* initialise ctdb */
ctdb = ctdb_cmdline_client(ev);
ctdb_set_message_handler(ctdb, CTDB_SRVID_RECONFIGURE, reconfigure_handler,
&cluster_ready);
/* attach to a specific database */
ctdb_db = ctdb_attach(ctdb, "test.tdb");
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);
if (ctdb_set_message_handler(ctdb, 0, ring_message_handler,&msg_count))
goto error;
printf("Waiting for cluster\n");
while (1) {
uint32_t recmode=1;
ctdb_ctrl_getrecmode(ctdb, timeval_zero(), CTDB_CURRENT_NODE, &recmode);
if (recmode == 0) break;
event_loop_once(ev);
}
bench_ring(ctdb, ev);
error:
return 0;
}
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