mdbx: yota's test.

2014 (C) Copyright Vladimir Romanov, https://www.facebook.com/vvromanov

Change-Id: Ia4cd6cbdd7b7a25c0b217b968337cfd9af721380

.gitignore

@@ -22,3 +22,4 @@ core.*
 valgrind.*
 man/
 html/
+yota_test*

Makefile

@@ -29,6 +29,7 @@ ILIBS	:= libmdbx.a libmdbx.so
 IPROGS	:= mdbx_stat mdbx_copy mdbx_dump mdbx_load mdbx_chk
 IDOCS	:= mdb_stat.1 mdb_copy.1 mdb_dump.1 mdb_load.1
 PROGS	:= $(IPROGS) mtest0 mtest1 mtest2 mtest3 mtest4 mtest5 mtest6 wbench
+PROGS   += yota_test1 yota_test2
 
 SRC_LMDB := mdb.c midl.c lmdb.h midl.h reopen.h barriers.h
 SRC_MDBX := $(SRC_LMDB) mdbx.h
@@ -115,6 +116,12 @@ mtest5:	mtest5.o mdbx.o
 mtest6:	mtest6.o mdbx.o
 	$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $^
 
+yota_test1: yota_test1.o mdbx.o
+	$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $^
+
+yota_test2: yota_test2.o mdbx.o
+	$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $^
+
 wbench:	wbench.o mdbx.o
 	$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $^ -Wl,--no-as-needed,-lrt
 

yota_test1.c

@@ -0,0 +1,237 @@
+#include <sys/time.h>
+#include <sys/stat.h>
+
+#include <limits.h>
+#include <stddef.h>
+#include <string.h>
+#include <stdio.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <assert.h>
+#include "mdbx.h"
+
+#define IP_PRINTF_ARG_HOST(addr)    (int)((addr) >> 24), (int)((addr) >> 16 & 0xff), (int)((addr) >> 8 & 0xff), (int)((addr) & 0xff)
+
+char opt_db_path[PATH_MAX] = "/dev/shm/lmdb_bench1";
+static MDB_env *env;
+#define REC_COUNT 1000000
+int64_t ids[REC_COUNT + REC_COUNT / 10];
+int32_t ids_count = 0;
+
+int64_t lmdb_add = 0;
+int64_t lmdb_del = 0;
+int64_t obj_id = 0;
+
+static void add_id_to_pool(int64_t id) {
+    ids[ids_count] = id;
+    ids_count++;
+}
+
+static inline int64_t getTimeMicroseconds(void) {
+    struct timeval val;
+    gettimeofday(&val, NULL);
+    return val.tv_sec * ((int64_t) 1000000) + val.tv_usec;
+}
+
+static int64_t get_id_from_pool() {
+    if (ids_count == 0) {
+        return -1;
+    }
+    int32_t index = rand() % ids_count;
+    int64_t id = ids[index];
+    ids[index] = ids[ids_count - 1];
+    ids_count--;
+    return id;
+}
+
+#define LMDB_CHECK(x) \
+    do {\
+        const int rc = (x);\
+        if ( rc != MDB_SUCCESS ) {\
+            printf("Error [%d] %s in %s at %s:%d\n", rc, mdb_strerror(rc), #x, __FILE__, __LINE__); \
+            exit(EXIT_FAILURE); \
+        }\
+    } while(0)
+
+static void db_connect() {
+    LMDB_CHECK(mdb_env_create(&env));
+    LMDB_CHECK(mdb_env_set_mapsize(env, 3L * 1024L * 1024L * 1024L));
+    LMDB_CHECK(mdb_env_set_maxdbs(env, 30));
+#if defined(MDB_LIFORECLAIM)
+    LMDB_CHECK(mdb_env_open(env, opt_db_path, MDB_CREATE | MDB_NOSYNC | MDB_WRITEMAP | MDB_LIFORECLAIM, 0664));
+#else
+    LMDB_CHECK(mdb_env_open(env, opt_db_path, MDB_CREATE | MDB_NOSYNC | MDB_WRITEMAP, 0664));
+#endif
+    printf("Connection open\n");
+}
+
+typedef struct {
+    char session_id1[100];
+    char session_id2[100];
+    char ip[20];
+    uint8_t fill[100];
+} session_data_t;
+
+typedef struct {
+    int64_t obj_id;
+    int8_t event_type;
+} __attribute__((__packed__)) event_data_t;
+
+static void create_record(int64_t record_id) {
+    MDB_dbi dbi_session;
+    MDB_dbi dbi_session_id;
+    MDB_dbi dbi_event;
+    MDB_dbi dbi_ip;
+    event_data_t event;
+    MDB_txn *txn;
+    session_data_t data;
+    // transaction init
+    snprintf(data.session_id1, sizeof (data.session_id1), "mskugw%02ld_%02ld.gx.yota.ru;3800464060;4152;%ld", record_id % 3 + 1, record_id % 9 + 1, record_id);
+    snprintf(data.session_id2, sizeof (data.session_id2), "gx_service;%ld;%ld;node@spb-jsm1", record_id, record_id % 1000000000 + 99999);
+    snprintf(data.ip, sizeof (data.ip), "%d.%d.%d.%d", IP_PRINTF_ARG_HOST(record_id & 0xFFFFFFFF));
+    event.obj_id = record_id;
+    event.event_type = 1;
+
+    MDB_val _session_id1_rec = {strlen(data.session_id1), data.session_id1};
+    MDB_val _session_id2_rec = {strlen(data.session_id2), data.session_id2};
+    MDB_val _ip_rec = {strlen(data.ip), data.ip};
+    MDB_val _obj_id_rec = {sizeof (record_id), &record_id};
+    MDB_val _data_rec = {offsetof(session_data_t, fill) + (rand() % sizeof (data.fill)), &data};
+    MDB_val _event_rec = {sizeof (event), &event};
+
+    LMDB_CHECK(mdb_txn_begin(env, NULL, 0, &txn));
+    LMDB_CHECK(mdb_dbi_open(txn, "session", MDB_CREATE, &dbi_session));
+    LMDB_CHECK(mdb_dbi_open(txn, "session_id", MDB_CREATE, &dbi_session_id));
+    LMDB_CHECK(mdb_dbi_open(txn, "event", MDB_CREATE, &dbi_event));
+    LMDB_CHECK(mdb_dbi_open(txn, "ip", MDB_CREATE, &dbi_ip));
+    LMDB_CHECK(mdb_put(txn, dbi_session, &_obj_id_rec, &_data_rec, MDB_NOOVERWRITE | MDB_NODUPDATA));
+    LMDB_CHECK(mdb_put(txn, dbi_session_id, &_session_id1_rec, &_obj_id_rec, MDB_NOOVERWRITE | MDB_NODUPDATA));
+    LMDB_CHECK(mdb_put(txn, dbi_session_id, &_session_id2_rec, &_obj_id_rec, MDB_NOOVERWRITE | MDB_NODUPDATA));
+    LMDB_CHECK(mdb_put(txn, dbi_ip, &_ip_rec, &_obj_id_rec, 0));
+    LMDB_CHECK(mdb_put(txn, dbi_event, &_event_rec, &_obj_id_rec, 0));
+
+    // transaction commit
+    LMDB_CHECK(mdb_txn_commit(txn));
+    lmdb_add++;
+}
+
+static void delete_record(int64_t record_id) {
+    MDB_dbi dbi_session;
+    MDB_dbi dbi_session_id;
+    MDB_dbi dbi_event;
+    MDB_dbi dbi_ip;
+    event_data_t event;
+    MDB_txn *txn;
+
+    // transaction init
+    LMDB_CHECK(mdb_txn_begin(env, NULL, 0, &txn));
+    // open database in read-write mode
+    LMDB_CHECK(mdb_dbi_open(txn, "session", MDB_CREATE, &dbi_session));
+    LMDB_CHECK(mdb_dbi_open(txn, "session_id", MDB_CREATE, &dbi_session_id));
+    LMDB_CHECK(mdb_dbi_open(txn, "event", MDB_CREATE, &dbi_event));
+    LMDB_CHECK(mdb_dbi_open(txn, "ip", MDB_CREATE, &dbi_ip));
+    // put data
+    MDB_val _obj_id_rec = {sizeof (record_id), &record_id};
+    MDB_val v_rec;
+    // get data
+    LMDB_CHECK(mdb_get(txn, dbi_session, &_obj_id_rec, &v_rec));
+    session_data_t* data = (session_data_t*) v_rec.mv_data;
+
+    MDB_val _session_id1_rec = {strlen(data->session_id1), data->session_id1};
+    MDB_val _session_id2_rec = {strlen(data->session_id2), data->session_id2};
+    MDB_val _ip_rec = {strlen(data->ip), data->ip};
+    LMDB_CHECK(mdb_del(txn, dbi_session_id, &_session_id1_rec, NULL));
+    LMDB_CHECK(mdb_del(txn, dbi_session_id, &_session_id2_rec, NULL));
+    LMDB_CHECK(mdb_del(txn, dbi_ip, &_ip_rec, NULL));
+    event.obj_id = record_id;
+    event.event_type = 1;
+    MDB_val _event_rec = {sizeof (event), &event};
+    LMDB_CHECK(mdb_del(txn, dbi_event, &_event_rec, NULL));
+    LMDB_CHECK(mdb_del(txn, dbi_session, &_obj_id_rec, NULL));
+
+    // transaction commit
+    LMDB_CHECK(mdb_txn_commit(txn));
+    lmdb_del++;
+}
+
+static void db_disconnect() {
+    mdb_env_close(env);
+    printf("Connection closed\n");
+}
+
+static void get_db_stat(const char* db, int64_t* ms_branch_pages, int64_t* ms_leaf_pages) {
+    MDB_txn *txn;
+    MDB_stat stat;
+    MDB_dbi dbi;
+
+    LMDB_CHECK(mdb_txn_begin(env, NULL, MDB_RDONLY, &txn));
+    LMDB_CHECK(mdb_dbi_open(txn, db, MDB_CREATE, &dbi));
+    LMDB_CHECK(mdb_stat(txn, dbi, &stat));
+    mdb_txn_abort(txn);
+    printf("%15s | %15ld | %5u | %10ld | %10ld | %11ld |\n",
+            db,
+            stat.ms_branch_pages,
+            stat.ms_depth,
+            stat.ms_entries,
+            stat.ms_leaf_pages,
+            stat.ms_overflow_pages);
+    (*ms_branch_pages) += stat.ms_branch_pages;
+    (*ms_leaf_pages) += stat.ms_leaf_pages;
+}
+
+static void periodic_stat(void) {
+    int64_t ms_branch_pages = 0;
+    int64_t ms_leaf_pages = 0;
+    printf("           Name | ms_branch_pages | depth |    entries | leaf_pages | overf_pages |\n");
+    get_db_stat("session", &ms_branch_pages, &ms_leaf_pages);
+    get_db_stat("session_id", &ms_branch_pages, &ms_leaf_pages);
+    get_db_stat("event", &ms_branch_pages, &ms_leaf_pages);
+    get_db_stat("ip", &ms_branch_pages, &ms_leaf_pages);
+    printf("%15s | %15ld | %5s | %10s | %10ld | %11s |\n", "", ms_branch_pages, "", "", ms_leaf_pages, "");
+    static int64_t prev_add;
+    static int64_t prev_del;
+    static int64_t t = -1;
+    if (t > 0) {
+        int64_t delta = getTimeMicroseconds() - t;
+        printf("CPS: add %ld, delete %ld, items processed - %ld\n", (lmdb_add - prev_add)*1000000 / delta, (lmdb_del - prev_del)*1000000 / delta, obj_id);
+    }
+    t = getTimeMicroseconds();
+    prev_add = lmdb_add;
+    prev_del = lmdb_del;
+}
+
+static void periodic_add_rec() {
+    int i;
+    for (i = 0; i < 10000; i++) {
+        if (ids_count <= REC_COUNT) {
+            int64_t id = obj_id++;
+            create_record(id);
+            add_id_to_pool(id);
+        }
+        if (ids_count > REC_COUNT) {
+            int64_t id = get_id_from_pool();
+            delete_record(id);
+        }
+    }
+    periodic_stat();
+}
+
+int main(int argc, char** argv) {
+    char filename[PATH_MAX];
+    mkdir(opt_db_path, 0775);
+
+    strcpy(filename, opt_db_path);
+    strcat(filename, "/data.mdb");
+    remove(filename);
+
+    strcpy(filename, opt_db_path);
+    strcat(filename, "/lock.mdb");
+    remove(filename);
+
+    db_connect();
+    while (1) {
+        periodic_add_rec();
+    }
+    db_disconnect();
+    return 0;
+}

yota_test2.c

@@ -0,0 +1,287 @@
+#include <sys/time.h>
+#include <sys/stat.h>
+
+#include <limits.h>
+#include <stddef.h>
+#include <string.h>
+#include <stdio.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <assert.h>
+#include "mdbx.h"
+
+#define IP_PRINTF_ARG_HOST(addr)    (int)((addr) >> 24), (int)((addr) >> 16 & 0xff), (int)((addr) >> 8 & 0xff), (int)((addr) & 0xff)
+
+char opt_db_path[PATH_MAX] = "/dev/shm/lmdb_bench2";
+static MDB_env *env;
+#define REC_COUNT 1024000
+int64_t ids[REC_COUNT * 10];
+int32_t ids_count = 0;
+
+int64_t lmdb_add = 0;
+int64_t lmdb_del = 0;
+int64_t obj_id = 0;
+int64_t lmdb_data_size = 0;
+int64_t lmdb_key_size = 0;
+
+static void add_id_to_pool(int64_t id) {
+    ids[ids_count] = id;
+    ids_count++;
+}
+
+static inline int64_t getTimeMicroseconds(void) {
+    struct timeval val;
+    gettimeofday(&val, NULL);
+    return val.tv_sec * ((int64_t) 1000000) + val.tv_usec;
+}
+
+static int64_t get_id_from_pool() {
+    if (ids_count == 0) {
+        return -1;
+    }
+    int32_t index = rand() % ids_count;
+    int64_t id = ids[index];
+    ids[index] = ids[ids_count - 1];
+    ids_count--;
+    return id;
+}
+
+#define LMDB_CHECK(x) \
+    do {\
+        const int rc = (x);\
+        if ( rc != MDB_SUCCESS ) {\
+            printf("Error [%d] %s in %s at %s:%d\n", rc, mdb_strerror(rc), #x, __FILE__, __LINE__); \
+            exit(EXIT_FAILURE); \
+        }\
+    } while(0)
+
+static void db_connect() {
+    MDB_dbi dbi_session;
+    MDB_dbi dbi_session_id;
+    MDB_dbi dbi_event;
+    MDB_dbi dbi_ip;
+
+    LMDB_CHECK(mdb_env_create(&env));
+    LMDB_CHECK(mdb_env_set_mapsize(env, 300000L * 4096L));
+    LMDB_CHECK(mdb_env_set_maxdbs(env, 30));
+#if defined(MDB_LIFORECLAIM)
+    LMDB_CHECK(mdb_env_open(env, opt_db_path, MDB_CREATE | MDB_NOSYNC | MDB_WRITEMAP | MDB_LIFORECLAIM, 0664));
+#else
+    LMDB_CHECK(mdb_env_open(env, opt_db_path, MDB_CREATE | MDB_NOSYNC | MDB_WRITEMAP, 0664));
+#endif
+    MDB_txn *txn;
+
+    // transaction init
+    LMDB_CHECK(mdb_txn_begin(env, NULL, 0, &txn));
+    // open database in read-write mode
+    LMDB_CHECK(mdb_dbi_open(txn, "session", MDB_CREATE, &dbi_session));
+    LMDB_CHECK(mdb_dbi_open(txn, "session_id", MDB_CREATE, &dbi_session_id));
+    LMDB_CHECK(mdb_dbi_open(txn, "event", MDB_CREATE, &dbi_event));
+    LMDB_CHECK(mdb_dbi_open(txn, "ip", MDB_CREATE, &dbi_ip));
+    // transaction commit
+    LMDB_CHECK(mdb_txn_commit(txn));
+    printf("Connection open\n");
+}
+
+typedef struct {
+    char session_id1[100];
+    char session_id2[100];
+    char ip[20];
+    uint8_t fill[100];
+} session_data_t;
+
+typedef struct {
+    int64_t obj_id;
+    int8_t event_type;
+} __attribute__((__packed__)) event_data_t;
+
+static void create_record(int64_t record_id) {
+    MDB_dbi dbi_session;
+    MDB_dbi dbi_session_id;
+    MDB_dbi dbi_event;
+    MDB_dbi dbi_ip;
+    event_data_t event;
+    MDB_txn *txn;
+    session_data_t data;
+    // transaction init
+    snprintf(data.session_id1, sizeof (data.session_id1), "mskugw%02ld_%02ld.gx.yota.ru;3800464060;4152;%ld", record_id % 3 + 1, record_id % 9 + 1, record_id);
+    snprintf(data.session_id2, sizeof (data.session_id2), "gx_service;%ld;%ld;node@spb-jsm1", record_id, record_id % 1000000000 + 99999);
+    snprintf(data.ip, sizeof (data.ip), "%d.%d.%d.%d", IP_PRINTF_ARG_HOST(record_id & 0xFFFFFFFF));
+    event.obj_id = record_id;
+    event.event_type = 1;
+
+    MDB_val _session_id1_rec = {strlen(data.session_id1), data.session_id1};
+    MDB_val _session_id2_rec = {strlen(data.session_id2), data.session_id2};
+    MDB_val _ip_rec = {strlen(data.ip), data.ip};
+    MDB_val _obj_id_rec = {sizeof (record_id), &record_id};
+    MDB_val _data_rec = {offsetof(session_data_t, fill) + (rand() % sizeof (data.fill)), &data};
+    MDB_val _event_rec = {sizeof (event), &event};
+
+    LMDB_CHECK(mdb_txn_begin(env, NULL, 0, &txn));
+    LMDB_CHECK(mdb_dbi_open(txn, "session", MDB_CREATE, &dbi_session));
+    LMDB_CHECK(mdb_dbi_open(txn, "session_id", MDB_CREATE, &dbi_session_id));
+    LMDB_CHECK(mdb_dbi_open(txn, "event", MDB_CREATE, &dbi_event));
+    LMDB_CHECK(mdb_dbi_open(txn, "ip", MDB_CREATE, &dbi_ip));
+    LMDB_CHECK(mdb_put(txn, dbi_session, &_obj_id_rec, &_data_rec, MDB_NOOVERWRITE | MDB_NODUPDATA));
+    LMDB_CHECK(mdb_put(txn, dbi_session_id, &_session_id1_rec, &_obj_id_rec, MDB_NOOVERWRITE | MDB_NODUPDATA));
+    LMDB_CHECK(mdb_put(txn, dbi_session_id, &_session_id2_rec, &_obj_id_rec, MDB_NOOVERWRITE | MDB_NODUPDATA));
+    LMDB_CHECK(mdb_put(txn, dbi_ip, &_ip_rec, &_obj_id_rec, 0));
+    LMDB_CHECK(mdb_put(txn, dbi_event, &_event_rec, &_obj_id_rec, 0));
+    lmdb_data_size += (_data_rec.mv_size + _obj_id_rec.mv_size * 4);
+    lmdb_key_size += (_obj_id_rec.mv_size + _session_id1_rec.mv_size + _session_id2_rec.mv_size + _ip_rec.mv_size + _event_rec.mv_size);
+
+    // transaction commit
+    LMDB_CHECK(mdb_txn_commit(txn));
+    lmdb_add++;
+}
+
+static void delete_record(int64_t record_id) {
+    MDB_dbi dbi_session;
+    MDB_dbi dbi_session_id;
+    MDB_dbi dbi_event;
+    MDB_dbi dbi_ip;
+    event_data_t event;
+    MDB_txn *txn;
+
+    // transaction init
+    LMDB_CHECK(mdb_txn_begin(env, NULL, 0, &txn));
+    // open database in read-write mode
+    LMDB_CHECK(mdb_dbi_open(txn, "session", MDB_CREATE, &dbi_session));
+    LMDB_CHECK(mdb_dbi_open(txn, "session_id", MDB_CREATE, &dbi_session_id));
+    LMDB_CHECK(mdb_dbi_open(txn, "event", MDB_CREATE, &dbi_event));
+    LMDB_CHECK(mdb_dbi_open(txn, "ip", MDB_CREATE, &dbi_ip));
+    // put data
+    MDB_val _obj_id_rec = {sizeof (record_id), &record_id};
+    MDB_val _data_rec;
+    // get data
+    LMDB_CHECK(mdb_get(txn, dbi_session, &_obj_id_rec, &_data_rec));
+    session_data_t* data = (session_data_t*) _data_rec.mv_data;
+
+    MDB_val _session_id1_rec = {strlen(data->session_id1), data->session_id1};
+    MDB_val _session_id2_rec = {strlen(data->session_id2), data->session_id2};
+    MDB_val _ip_rec = {strlen(data->ip), data->ip};
+    LMDB_CHECK(mdb_del(txn, dbi_session_id, &_session_id1_rec, NULL));
+    LMDB_CHECK(mdb_del(txn, dbi_session_id, &_session_id2_rec, NULL));
+    LMDB_CHECK(mdb_del(txn, dbi_ip, &_ip_rec, NULL));
+    event.obj_id = record_id;
+    event.event_type = 1;
+    MDB_val _event_rec = {sizeof (event), &event};
+    LMDB_CHECK(mdb_del(txn, dbi_event, &_event_rec, NULL));
+    LMDB_CHECK(mdb_del(txn, dbi_session, &_obj_id_rec, NULL));
+
+    lmdb_data_size -= (_data_rec.mv_size + _obj_id_rec.mv_size * 4);
+    lmdb_key_size -= (_obj_id_rec.mv_size + _session_id1_rec.mv_size + _session_id2_rec.mv_size + _ip_rec.mv_size + _event_rec.mv_size);
+
+    // transaction commit
+    LMDB_CHECK(mdb_txn_commit(txn));
+    lmdb_del++;
+}
+
+static void db_disconnect() {
+    mdb_env_close(env);
+    printf("Connection closed\n");
+}
+
+static void get_db_stat(const char* db, int64_t* ms_branch_pages, int64_t* ms_leaf_pages) {
+    MDB_txn *txn;
+    MDB_stat stat;
+    MDB_dbi dbi;
+
+    LMDB_CHECK(mdb_txn_begin(env, NULL, MDB_RDONLY, &txn));
+    LMDB_CHECK(mdb_dbi_open(txn, db, MDB_CREATE, &dbi));
+    LMDB_CHECK(mdb_stat(txn, dbi, &stat));
+    mdb_txn_abort(txn);
+    printf("%15s | %15ld | %5u | %10ld | %10ld | %11ld |\n",
+            db,
+            stat.ms_branch_pages,
+            stat.ms_depth,
+            stat.ms_entries,
+            stat.ms_leaf_pages,
+            stat.ms_overflow_pages);
+    (*ms_branch_pages) += stat.ms_branch_pages;
+    (*ms_leaf_pages) += stat.ms_leaf_pages;
+}
+
+static void periodic_stat(void) {
+    int64_t ms_branch_pages = 0;
+    int64_t ms_leaf_pages = 0;
+    printf("           Name | ms_branch_pages | depth |    entries | leaf_pages | overf_pages |\n");
+    get_db_stat("session", &ms_branch_pages, &ms_leaf_pages);
+    get_db_stat("session_id", &ms_branch_pages, &ms_leaf_pages);
+    get_db_stat("event", &ms_branch_pages, &ms_leaf_pages);
+    get_db_stat("ip", &ms_branch_pages, &ms_leaf_pages);
+    printf("%15s | %15ld | %5s | %10s | %10ld | %11s |\n", "", ms_branch_pages, "", "", ms_leaf_pages, "");
+    static int64_t prev_add;
+    static int64_t prev_del;
+    static int64_t t = -1;
+    if (t > 0) {
+        int64_t delta = getTimeMicroseconds() - t;
+        printf("CPS: add %ld, delete %ld, items processed - %ldK data=%ldK key=%ldK\n", (lmdb_add - prev_add)*1000000 / delta, (lmdb_del - prev_del)*1000000 / delta, obj_id / 1024, lmdb_data_size / 1024, lmdb_key_size / 1024);
+        printf("usage data=%ld%%\n", ((lmdb_data_size + lmdb_key_size) * 100) / ((ms_leaf_pages + ms_branch_pages)*4096));
+    }
+    t = getTimeMicroseconds();
+    prev_add = lmdb_add;
+    prev_del = lmdb_del;
+}
+
+//static void periodic_add_rec() {
+//    for (int i = 0; i < 10240; i++) {
+//        if (ids_count <= REC_COUNT) {
+//            int64_t id = obj_id++;
+//            create_record(id);
+//            add_id_to_pool(id);
+//        }
+//        if (ids_count > REC_COUNT) {
+//            int64_t id = get_id_from_pool();
+//            delete_record(id);
+//        }
+//    }
+//    periodic_stat();
+//}
+
+int main(int argc, char** argv) {
+    char filename[PATH_MAX];
+    int i;
+    int64_t t;
+
+    mkdir(opt_db_path, 0775);
+
+    strcpy(filename, opt_db_path);
+    strcat(filename, "/data.mdb");
+    remove(filename);
+
+    strcpy(filename, opt_db_path);
+    strcat(filename, "/lock.mdb");
+    remove(filename);
+
+    db_connect();
+    periodic_stat();
+    for (i = 0; i < 1024000; i++) {
+        int64_t id = obj_id++;
+        create_record(id);
+        add_id_to_pool(id);
+    }
+    periodic_stat();
+    t = getTimeMicroseconds();
+    while (1) {
+        int i;
+        int64_t now;
+        for (i = 0; i < 100; i++) {
+            int64_t id = obj_id++;
+            create_record(id);
+            add_id_to_pool(id);
+            id = get_id_from_pool();
+            delete_record(id);
+        }
+        //int64_t id = obj_id++;
+        //create_record(id);
+        //add_id_to_pool(id);
+        now = getTimeMicroseconds();
+        if ((now - t) > 100000) {
+            periodic_stat();
+            t = now;
+        }
+    }
+    db_disconnect();
+    return 0;
+}