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/*-
* See the file LICENSE for redistribution information.
*
* Copyright (c) 2001,2008 Oracle. All rights reserved.
*
* $Id: bench_001.c,v 12.9 2008/01/08 20:58:23 bostic Exp $
*/
/*
* bench_001 - time bulk fetch interface.
* Without -R builds a btree acording to the arguments.
* With -R runs and times bulk fetches. If -d is specified
* during reads the DB_MULTIPLE interface is used
* otherwise the DB_MULTIPLE_KEY interface is used.
*
* ARGUMENTS:
* -c cachesize [1000 * pagesize]
* -d number of duplicates [none]
* -E don't use environment
* -I Just initialize the environment
* -i number of read iterations [1000000]
* -l length of data item [20]
* -n number of keys [1000000]
* -p pagesize [65536]
* -R perform read test.
* -T incorporate transactions.
*
* COMPILE:
* cc -I /usr/local/BerkeleyDB/include \
* -o bench_001 -O2 bench_001.c /usr/local/BerkeleyDB/lib/libdb.so
*/
#include <sys/types.h>
#include <sys/time.h>
#include <stdlib.h>
#include <string.h>
#ifdef _WIN32
extern int getopt(int, char * const *, const char *);
#else
#include <unistd.h>
#endif
#include <db.h>
#define DATABASE "bench_001.db"
int compare_int(DB *, const DBT *, const DBT *);
DB_ENV *db_init(char *, char *, u_int, int);
int fill(DB_ENV *, DB *, int, u_int, int, int);
int get(DB *, int, u_int, int, int, int, int *);
int main(int, char *[]);
void usage(void);
const char
*progname = "bench_001"; /* Program name. */
/*
* db_init --
* Initialize the environment.
*/
DB_ENV *
db_init(home, prefix, cachesize, txn)
char *home, *prefix;
u_int cachesize;
int txn;
{
DB_ENV *dbenv;
u_int32_t flags;
int ret;
if ((ret = db_env_create(&dbenv, 0)) != 0) {
dbenv->err(dbenv, ret, "db_env_create");
return (NULL);
}
dbenv->set_errfile(dbenv, stderr);
dbenv->set_errpfx(dbenv, prefix);
(void)dbenv->set_cachesize(dbenv, 0,
cachesize == 0 ? 50 * 1024 * 1024 : (u_int32_t)cachesize, 0);
flags = DB_CREATE | DB_INIT_MPOOL;
if (txn)
flags |= DB_INIT_TXN | DB_INIT_LOCK;
if ((ret = dbenv->open(dbenv, home, flags, 0)) != 0) {
dbenv->err(dbenv, ret, "DB_ENV->open: %s", home);
(void)dbenv->close(dbenv, 0);
return (NULL);
}
return (dbenv);
}
/*
* get -- loop getting batches of records.
*
*/
int
get(dbp, txn, datalen, num, dups, iter, countp)
DB *dbp;
u_int datalen;
int txn, num, dups, iter, *countp;
{
DBC *dbcp;
DBT key, data;
DB_ENV *dbenv;
DB_TXN *txnp;
u_int32_t flags, len, klen;
int count, i, j, ret;
void *pointer, *dp, *kp;
dbenv = dbp->dbenv;
klen = 0; /* Lint. */
klen = klen;
memset(&key, 0, sizeof(key));
key.data = &j;
key.size = sizeof(j);
memset(&data, 0, sizeof(data));
data.flags = DB_DBT_USERMEM;
data.data = malloc(datalen*1024*1024);
data.ulen = data.size = datalen*1024*1024;
count = 0;
flags = DB_SET;
if (!dups)
flags |= DB_MULTIPLE_KEY;
else
flags |= DB_MULTIPLE;
for (i = 0; i < iter; i++) {
txnp = NULL;
if (txn)
if ((ret =
dbenv->txn_begin(dbenv, NULL, &txnp, 0)) != 0)
goto err;
if ((ret = dbp->cursor(dbp, txnp, &dbcp, 0)) != 0)
goto err;
j = random() % num;
if ((ret = dbcp->get(dbcp, &key, &data, flags)) != 0)
goto err;
DB_MULTIPLE_INIT(pointer, &data);
if (dups)
while (pointer != NULL) {
DB_MULTIPLE_NEXT(pointer, &data, dp, len);
if (dp != NULL)
count++;
}
else
while (pointer != NULL) {
DB_MULTIPLE_KEY_NEXT(pointer,
&data, kp, klen, dp, len);
if (kp != NULL)
count++;
}
if ((ret = dbcp->close(dbcp)) != 0)
goto err;
if (txn)
if ((ret = txnp->commit(txnp, 0)) != 0)
goto err;
}
*countp = count;
return (0);
err: dbp->err(dbp, ret, "get");
return (ret);
}
/*
* fill - fill a db
* Since we open/created the db with transactions (potentially),
* we need to populate it with transactions. We'll bundle the puts
* 10 to a transaction.
*/
#define PUTS_PER_TXN 10
int
fill(dbenv, dbp, txn, datalen, num, dups)
DB_ENV *dbenv;
DB *dbp;
u_int datalen;
int txn, num, dups;
{
DBT key, data;
DB_TXN *txnp;
struct data {
int id;
char str[1];
} *data_val;
int count, i, ret;
/*
* Insert records into the database, where the key is the user
* input and the data is the user input in reverse order.
*/
txnp = NULL;
ret = 0;
count = 0;
memset(&key, 0, sizeof(DBT));
memset(&data, 0, sizeof(DBT));
key.data = &i;
key.size = sizeof(i);
data.data = data_val = malloc(datalen);
memcpy(data_val->str, "0123456789012345678901234567890123456789",
datalen - sizeof(data_val->id));
data.size = datalen;
data.flags = DB_DBT_USERMEM;
for (i = 0; i < num; i++) {
if (txn != 0 && i % PUTS_PER_TXN == 0) {
if (txnp != NULL) {
ret = txnp->commit(txnp, 0);
txnp = NULL;
if (ret != 0)
goto err;
}
if ((ret =
dbenv->txn_begin(dbenv, NULL, &txnp, 0)) != 0)
goto err;
}
data_val->id = 0;
do {
switch (ret = dbp->put(dbp, txnp, &key, &data, 0)) {
case 0:
count++;
break;
default:
dbp->err(dbp, ret, "DB->put");
goto err;
}
} while (++data_val->id < dups);
}
if (txnp != NULL)
ret = txnp->commit(txnp, 0);
printf("%d\n", count);
return (ret);
err: if (txnp != NULL)
(void)txnp->abort(txnp);
return (ret);
}
int
main(argc, argv)
int argc;
char *argv[];
{
extern char *optarg;
extern int optind;
DB *dbp;
DB_ENV *dbenv;
DB_TXN *txnp;
struct timeval start_time, end_time;
double secs;
u_int cache, datalen, pagesize;
int ch, count, dups, env, init, iter, num;
int ret, rflag, txn;
txnp = NULL;
datalen = 20;
iter = num = 1000000;
env = 1;
dups = init = rflag = txn = 0;
pagesize = 65536;
cache = 1000 * pagesize;
while ((ch = getopt(argc, argv, "c:d:EIi:l:n:p:RT")) != EOF)
switch (ch) {
case 'c':
cache = (u_int)atoi(optarg);
break;
case 'd':
dups = atoi(optarg);
break;
case 'E':
env = 0;
break;
case 'I':
init = 1;
break;
case 'i':
iter = atoi(optarg);
break;
case 'l':
datalen = (u_int)atoi(optarg);
break;
case 'n':
num = atoi(optarg);
break;
case 'p':
pagesize = (u_int)atoi(optarg);
break;
case 'R':
rflag = 1;
break;
case 'T':
txn = 1;
break;
case '?':
default:
usage();
}
argc -= optind;
argv += optind;
/* Remove the previous database. */
if (!rflag) {
if (env)
(void)system("rm -rf BENCH_001; mkdir BENCH_001");
else
(void)unlink(DATABASE);
}
dbenv = NULL;
if (env == 1 &&
(dbenv = db_init("BENCH_001", "bench_001", cache, txn)) == NULL)
return (-1);
if (init)
exit(0);
/* Create and initialize database object, open the database. */
if ((ret = db_create(&dbp, dbenv, 0)) != 0) {
fprintf(stderr,
"%s: db_create: %s\n", progname, db_strerror(ret));
exit(EXIT_FAILURE);
}
dbp->set_errfile(dbp, stderr);
dbp->set_errpfx(dbp, progname);
if ((ret = dbp->set_bt_compare(dbp, compare_int)) != 0) {
dbp->err(dbp, ret, "set_bt_compare");
goto err;
}
if ((ret = dbp->set_pagesize(dbp, pagesize)) != 0) {
dbp->err(dbp, ret, "set_pagesize");
goto err;
}
if (dups && (ret = dbp->set_flags(dbp, DB_DUP)) != 0) {
dbp->err(dbp, ret, "set_flags");
goto err;
}
if (env == 0 && (ret = dbp->set_cachesize(dbp, 0, cache, 0)) != 0) {
dbp->err(dbp, ret, "set_cachesize");
goto err;
}
if ((ret = dbp->set_flags(dbp, DB_DUP)) != 0) {
dbp->err(dbp, ret, "set_flags");
goto err;
}
if (txn != 0)
if ((ret = dbenv->txn_begin(dbenv, NULL, &txnp, 0)) != 0)
goto err;
if ((ret = dbp->open(
dbp, txnp, DATABASE, NULL, DB_BTREE, DB_CREATE, 0664)) != 0) {
dbp->err(dbp, ret, "%s: open", DATABASE);
if (txnp != NULL)
(void)txnp->abort(txnp);
goto err;
}
if (txnp != NULL)
ret = txnp->commit(txnp, 0);
txnp = NULL;
if (ret != 0)
goto err;
if (rflag) {
/* If no environment, fill the cache. */
if (!env && (ret =
get(dbp, txn, datalen, num, dups, iter, &count)) != 0)
goto err;
/* Time the get loop. */
(void)gettimeofday(&start_time, NULL);
if ((ret =
get(dbp, txn, datalen, num, dups, iter, &count)) != 0)
goto err;
(void)gettimeofday(&end_time, NULL);
secs =
(((double)end_time.tv_sec * 1000000 + end_time.tv_usec) -
((double)start_time.tv_sec * 1000000 + start_time.tv_usec))
/ 1000000;
printf("%d records read using %d batches in %.2f seconds: ",
count, iter, secs);
printf("%.0f records/second\n", (double)count / secs);
} else if ((ret = fill(dbenv, dbp, txn, datalen, num, dups)) != 0)
goto err;
/* Close everything down. */
if ((ret = dbp->close(dbp, rflag ? DB_NOSYNC : 0)) != 0) {
fprintf(stderr,
"%s: DB->close: %s\n", progname, db_strerror(ret));
return (1);
}
return (ret);
err: (void)dbp->close(dbp, 0);
return (1);
}
int
compare_int(dbp, a, b)
DB *dbp;
const DBT *a, *b;
{
int ai, bi;
dbp = dbp; /* Lint. */
/*
* Returns:
* < 0 if a < b
* = 0 if a = b
* > 0 if a > b
*/
memcpy(&ai, a->data, sizeof(int));
memcpy(&bi, b->data, sizeof(int));
return (ai - bi);
}
void
usage()
{
(void)fprintf(stderr, "usage: %s %s\n\t%s\n",
progname, "[-EIRT] [-c cachesize] [-d dups]",
"[-i iterations] [-l datalen] [-n keys] [-p pagesize]");
exit(EXIT_FAILURE);
}
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