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memtier_benchmark.cpp
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memtier_benchmark.cpp
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/*
* Copyright (C) 2011-2013 Garantia Data Ltd.
*
* This file is part of memtier_benchmark.
*
* memtier_benchmark 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, version 2.
*
* memtier_benchmark 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 memtier_benchmark. If not, see <http://www.gnu.org/licenses/>.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <stdarg.h>
#include <limits.h>
#ifdef HAVE_GETOPT_H
#include <getopt.h>
#endif
#ifdef HAVE_PTHREAD_H
#include <pthread.h>
#endif
#include "client.h"
#include "obj_gen.h"
#include "memtier_benchmark.h"
#ifdef HAVE_ASSERT_H
#include <assert.h>
#endif
#include <errno.h>
#include <sys/time.h>
#include <sys/resource.h>
static int log_level = 0;
void benchmark_log_file_line(int level, const char *filename, unsigned int line, const char *fmt, ...)
{
if (level > log_level)
return;
va_list args;
char fmtbuf[1024];
snprintf(fmtbuf, sizeof(fmtbuf)-1, "%s:%u: ", filename, line);
strcat(fmtbuf, fmt);
va_start(args, fmt);
vfprintf(stderr, fmtbuf, args);
va_end(args);
}
void benchmark_log(int level, const char *fmt, ...)
{
if (level > log_level)
return;
va_list args;
va_start(args, fmt);
vfprintf(stderr, fmt, args);
va_end(args);
}
static void config_print(FILE *file, struct benchmark_config *cfg)
{
char tmpbuf[512];
fprintf(file,
"server = %s\n"
"port = %u\n"
"unix socket = %s\n"
"protocol = %s\n"
"out_file = %s\n"
"client_stats = %s\n"
"run_count = %u\n"
"debug = %u\n"
"requests = %u\n"
"clients = %u\n"
"threads = %u\n"
"test_time = %u\n"
"ratio = %u:%u\n"
"pipeline = %u\n"
"data_size = %u\n"
"random_data = %s\n"
"data_size_range = %u-%u\n"
"data_size_list = %s\n"
"expiry_range = %u-%u\n"
"data_import = %s\n"
"data_verify = %s\n"
"verify_only = %s\n"
"generate_keys = %s\n"
"key_prefix = %s\n"
"key_minimum = %u\n"
"key_maximum = %u\n"
"key_pattern = %s\n"
"reconnect_interval = %u\n"
"multi_key_get = %u\n"
"authenticate = %s\n"
"select-db = %d\n"
"no-expiry = %s\n",
cfg->server,
cfg->port,
cfg->unix_socket,
cfg->protocol,
cfg->out_file,
cfg->client_stats,
cfg->run_count,
cfg->debug,
cfg->requests,
cfg->clients,
cfg->threads,
cfg->test_time,
cfg->ratio.a, cfg->ratio.b,
cfg->pipeline,
cfg->data_size,
cfg->random_data ? "yes" : "no",
cfg->data_size_range.min, cfg->data_size_range.max,
cfg->data_size_list.print(tmpbuf, sizeof(tmpbuf)-1),
cfg->expiry_range.min, cfg->expiry_range.max,
cfg->data_import,
cfg->data_verify ? "yes" : "no",
cfg->verify_only ? "yes" : "no",
cfg->generate_keys ? "yes" : "no",
cfg->key_prefix,
cfg->key_minimum,
cfg->key_maximum,
cfg->key_pattern,
cfg->reconnect_interval,
cfg->multi_key_get,
cfg->authenticate ? cfg->authenticate : "",
cfg->select_db,
cfg->no_expiry ? "yes" : "no");
}
static void config_init_defaults(struct benchmark_config *cfg)
{
if (!cfg->server && !cfg->unix_socket)
cfg->server = "localhost";
if (!cfg->port && !cfg->unix_socket)
cfg->port = 6379;
if (!cfg->protocol)
cfg->protocol = "redis";
if (!cfg->run_count)
cfg->run_count = 1;
if (!cfg->requests && !cfg->test_time)
cfg->requests = 10000;
if (!cfg->clients)
cfg->clients = 50;
if (!cfg->threads)
cfg->threads = 4;
if (!cfg->ratio.is_defined())
cfg->ratio = config_ratio("1:10");
if (!cfg->pipeline)
cfg->pipeline = 1;
if (!cfg->data_size && !cfg->data_size_list.is_defined() && !cfg->data_size_range.is_defined() && !cfg->data_import)
cfg->data_size = 32;
if (cfg->generate_keys || !cfg->data_import) {
if (!cfg->key_prefix)
cfg->key_prefix = "memtier-";
if (!cfg->key_maximum)
cfg->key_maximum = 10000000;
}
if (!cfg->key_pattern)
cfg->key_pattern = "R:R";
}
static int config_parse_args(int argc, char *argv[], struct benchmark_config *cfg)
{
enum extended_options {
o_test_time = 128,
o_ratio,
o_pipeline,
o_data_size_range,
o_data_size_list,
o_expiry_range,
o_data_import,
o_data_verify,
o_verify_only,
o_key_prefix,
o_key_minimum,
o_key_maximum,
o_key_pattern,
o_show_config,
o_client_stats,
o_reconnect_interval,
o_generate_keys,
o_multi_key_get,
o_select_db,
o_no_expiry
};
static struct option long_options[] = {
{ "server", 1, 0, 's' },
{ "port", 1, 0, 'p' },
{ "unix-socket", 1, 0, 'S' },
{ "protocol", 1, 0, 'P' },
{ "out-file", 1, 0, 'o' },
{ "client-stats", 1, 0, o_client_stats },
{ "run-count", 1, 0, 'x' },
{ "debug", 0, 0, 'D' },
{ "show-config", 0, 0, o_show_config },
{ "requests", 1, 0, 'n' },
{ "clients", 1, 0, 'c' },
{ "threads", 1, 0, 't' },
{ "test-time", 1, 0, o_test_time },
{ "ratio", 1, 0, o_ratio },
{ "pipeline", 1, 0, o_pipeline },
{ "data-size", 1, 0, 'd' },
{ "random-data", 0, 0, 'R' },
{ "data-size-range", 1, 0, o_data_size_range },
{ "data-size-list", 1, 0, o_data_size_list },
{ "expiry-range", 1, 0, o_expiry_range },
{ "data-import", 1, 0, o_data_import },
{ "data-verify", 0, 0, o_data_verify },
{ "verify-only", 0, 0, o_verify_only },
{ "generate-keys", 0, 0, o_generate_keys },
{ "key-prefix", 1, 0, o_key_prefix },
{ "key-minimum", 1, 0, o_key_minimum },
{ "key-maximum", 1, 0, o_key_maximum },
{ "key-pattern", 1, 0, o_key_pattern },
{ "reconnect-interval", 1, 0, o_reconnect_interval },
{ "multi-key-get", 1, 0, o_multi_key_get },
{ "authenticate", 1, 0, 'a' },
{ "select-db", 1, 0, o_select_db },
{ "no-expiry", 0, 0, o_no_expiry },
{ "help", 0, 0, 'h' },
{ "version", 0, 0, 'v' },
{ NULL, 0, 0, 0 }
};
int option_index;
int c;
char *endptr;
while ((c = getopt_long(argc, argv,
"s:S:p:P:o:x:DRn:c:t:d:a:h", long_options, &option_index)) != -1)
{
switch (c) {
case 'h':
return -1;
break;
case 'v':
puts(PACKAGE_STRING);
puts("Copyright (C) 2011-2013 Garantia Data Ltd.");
puts("This is free software. You may redistribute copies of it under the terms of");
puts("the GNU General Public License <http://www.gnu.org/licenses/gpl.html>.");
puts("There is NO WARRANTY, to the extent permitted by law.");
exit(0);
case 's':
cfg->server = optarg;
break;
case 'S':
cfg->unix_socket = optarg;
break;
case 'p':
endptr = NULL;
cfg->port = (unsigned short) strtoul(optarg, &endptr, 10);
if (!cfg->port || cfg->port > 65535 || !endptr || *endptr != '\0') {
fprintf(stderr, "error: port must be a number in the range [1-65535].\n");
return -1;
}
break;
case 'P':
if (strcmp(optarg, "memcache_text") &&
strcmp(optarg, "memcache_binary") &&
strcmp(optarg, "redis")) {
fprintf(stderr, "error: supported protocols are 'memcache_text', 'memcache_binary' and 'redis'.\n");
return -1;
}
cfg->protocol = optarg;
break;
case 'o':
cfg->out_file = optarg;
break;
case o_client_stats:
cfg->client_stats = optarg;
break;
case 'x':
endptr = NULL;
cfg->run_count = (unsigned int) strtoul(optarg, &endptr, 10);
if (!cfg->run_count || !endptr || *endptr != '\0') {
fprintf(stderr, "error: run count must be greater than zero.\n");
return -1;
}
break;
case 'D':
cfg->debug++;
break;
case o_show_config:
cfg->show_config++;
break;
case 'n':
endptr = NULL;
cfg->requests = (unsigned int) strtoul(optarg, &endptr, 10);
if (!cfg->requests || !endptr || *endptr != '\0') {
fprintf(stderr, "error: requests must be greater than zero.\n");
return -1;
}
if (cfg->test_time) {
fprintf(stderr, "error: --test-time and --requests are mutually exclusive.\n");
return -1;
}
break;
case 'c':
endptr = NULL;
cfg->clients = (unsigned int) strtoul(optarg, &endptr, 10);
if (!cfg->clients || !endptr || *endptr != '\0') {
fprintf(stderr, "error: clients must be greater than zero.\n");
return -1;
}
break;
case 't':
endptr = NULL;
cfg->threads = (unsigned int) strtoul(optarg, &endptr, 10);
if (!cfg->threads || !endptr || *endptr != '\0') {
fprintf(stderr, "error: threads must be greater than zero.\n");
return -1;
}
break;
case o_test_time:
endptr = NULL;
cfg->test_time = (unsigned int) strtoul(optarg, &endptr, 10);
if (!cfg->test_time || !endptr || *endptr != '\0') {
fprintf(stderr, "error: test time must be greater than zero.\n");
return -1;
}
if (cfg->requests) {
fprintf(stderr, "error: --test-time and --requests are mutually exclusive.\n");
return -1;
}
break;
case o_ratio:
cfg->ratio = config_ratio(optarg);
if (!cfg->ratio.is_defined()) {
fprintf(stderr, "error: ratio must be expressed as [0-n]:[0-n].\n");
return -1;
}
break;
case o_pipeline:
endptr = NULL;
cfg->pipeline = (unsigned int) strtoul(optarg, &endptr, 10);
if (!cfg->pipeline || !endptr || *endptr != '\0') {
fprintf(stderr, "error: pipeline must be greater than zero.\n");
return -1;
}
break;
case 'd':
endptr = NULL;
cfg->data_size = (unsigned int) strtoul(optarg, &endptr, 10);
if (!cfg->data_size || !endptr || *endptr != '\0') {
fprintf(stderr, "error: data_size must be greater than zero.\n");
return -1;
}
break;
case 'R':
cfg->random_data = true;
break;
case o_data_size_range:
cfg->data_size_range = config_range(optarg);
if (!cfg->data_size_range.is_defined() || cfg->data_size_range.min < 1) {
fprintf(stderr, "error: data_size_range must be expressed as [1-n]-[1-n].\n");
return -1;
}
break;
case o_data_size_list:
cfg->data_size_list = config_weight_list(optarg);
if (!cfg->data_size_list.is_defined()) {
fprintf(stderr, "error: data_size_list must be expressed as [size1:weight1],...[sizeN:weightN].\n");
return -1;
}
break;
case o_expiry_range:
cfg->expiry_range = config_range(optarg);
if (!cfg->expiry_range.is_defined()) {
fprintf(stderr, "error: data_size_range must be expressed as [0-n]-[1-n].\n");
return -1;
}
break;
case o_data_import:
cfg->data_import = optarg;
break;
case o_data_verify:
cfg->data_verify = 1;
break;
case o_verify_only:
cfg->verify_only = 1;
cfg->data_verify = 1; // Implied
break;
case o_key_prefix:
cfg->key_prefix = optarg;
break;
case o_key_minimum:
endptr = NULL;
cfg->key_minimum = (unsigned int) strtoul(optarg, &endptr, 10);
if (cfg->key_minimum < 1 || !endptr || *endptr != '\0') {
fprintf(stderr, "error: key_minimum must be greater than zero.\n");
return -1;
}
break;
case o_key_maximum:
endptr = NULL;
cfg->key_maximum = (unsigned int) strtoul(optarg, &endptr, 10);
if (cfg->key_maximum< 1 || !endptr || *endptr != '\0') {
fprintf(stderr, "error: key_maximum must be greater than zero.\n");
return -1;
}
break;
case o_key_pattern:
cfg->key_pattern = optarg;
if (strlen(cfg->key_pattern) != 3 || cfg->key_pattern[1] != ':' ||
(cfg->key_pattern[0] != 'R' && cfg->key_pattern[0] != 'S') ||
(cfg->key_pattern[2] != 'R' && cfg->key_pattern[2] != 'S')) {
fprintf(stderr, "error: key_pattern must be in the format of [S/R]:[S/R].\n");
return -1;
}
break;
case o_reconnect_interval:
endptr = NULL;
cfg->reconnect_interval = (unsigned int) strtoul(optarg, &endptr, 10);
if (!cfg->reconnect_interval || !endptr || *endptr != '\0') {
fprintf(stderr, "error: reconnect_interval must be greater than zero.\n");
return -1;
}
break;
case o_generate_keys:
cfg->generate_keys = 1;
break;
case o_multi_key_get:
endptr = NULL;
cfg->multi_key_get = (unsigned int) strtoul(optarg, &endptr, 10);
if (cfg->multi_key_get <= 0 || !endptr || *endptr != '\0') {
fprintf(stderr, "error: multi_key_get must be greater than zero.\n");
return -1;
}
break;
case 'a':
cfg->authenticate = optarg;
break;
case o_select_db:
cfg->select_db = (int) strtoul(optarg, &endptr, 10);
if (cfg->select_db < 0 || !endptr || *endptr != '\0') {
fprintf(stderr, "error: select_db must be greater or equal zero.\n");
return -1;
}
break;
case o_no_expiry:
cfg->no_expiry = true;
break;
default:
return -1;
break;
}
}
return 0;
}
void usage() {
fprintf(stderr, "Usage: memtier_benchmark [options]\n"
"A memcache/redis NoSQL traffic generator and performance benchmarking tool.\n"
"\n"
"Connection and General Options:\n"
" -s, --server=ADDR Server address (default: localhost)\n"
" -p, --port=PORT Server port (default: 6379)\n"
" -S, --unix-socket=SOCKET UNIX Domain socket name (default: none)\n"
" -P, --protocol=PROTOCOL Protocol to use (default: redis). Other\n"
" supported protocols are memcache_text,\n"
" memcache_binary.\n"
" -x, --run-count=NUMBER Number of full-test iterations to perform\n"
" -D, --debug Print debug output\n"
" --client-stats=FILE Produce per-client stats file\n"
" --out-file=FILE Name of output file (default: stdout)\n"
" --show-config Print detailed configuration before running\n"
"\n"
"Test Options:\n"
" -n, --requests=NUMBER Number of total requests per client (default: 10000)\n"
" -c, --clients=NUMBER Number of clients per thread (default: 50)\n"
" -t, --threads=NUMBER Number of threads (default: 4)\n"
" --test-time=SECS Number of seconds to run the test\n"
" --ratio=RATIO Set:Get ratio (default: 1:10)\n"
" --pipeline=NUMBER Number of concurrent pipelined requests (default: 1)\n"
" --reconnect-interval=NUM Number of requests after which re-connection is performed\n"
" --multi-key-get=NUM Enable multi-key get commands, up to NUM keys (default: 0)\n"
" -a, --authenticate=CREDENTIALS Authenticate to redis using CREDENTIALS, which depending\n"
" on the protocol can be PASSWORD or USER:PASSWORD.\n"
" --select-db=DB DB number to select, when testing a redis server\n"
"\n"
"Object Options:\n"
" -d --data-size=SIZE Object data size (default: 32)\n"
" -R --random-data Indicate that data should be randomized\n"
" --data-size-range=RANGE Use random-sized items in the specified range (min-max)\n"
" --data-size-list=LIST Use sizes from weight list (size1:weight1,..sizeN:weightN)\n"
" --expiry-range=RANGE Use random expiry values from the specified range\n"
"\n"
"Imported Data Options:\n"
" --data-import=FILE Read object data from file\n"
" --data-verify Enable data verification when test is complete\n"
" --verify-only Only perform --data-verify, without any other test\n"
" --generate-keys Generate keys for imported objects\n"
" --no-expiry Ignore expiry information in imported data\n"
"\n"
"Key Options:\n"
" --key-prefix=PREFIX Prefix for keys (default: \"memtier-\")\n"
" --key-minimum=NUMBER Key ID minimum value (default: 0)\n"
" --key-maximum=NUMBER Key ID maximum value (default: 10000000)\n"
" --key-pattern=PATTERN Set:Get pattern (default: R:R)\n"
"\n"
" --help Display this help\n"
" --version Display version information\n"
"\n"
);
exit(2);
}
static void* cg_thread_start(void *t);
struct cg_thread {
unsigned int m_thread_id;
benchmark_config* m_config;
object_generator* m_obj_gen;
client_group* m_cg;
abstract_protocol* m_protocol;
pthread_t m_thread;
bool m_finished;
cg_thread(unsigned int id, benchmark_config* config, object_generator* obj_gen) :
m_thread_id(id), m_config(config), m_obj_gen(obj_gen), m_cg(NULL), m_protocol(NULL), m_finished(false)
{
m_protocol = protocol_factory(m_config->protocol);
assert(m_protocol != NULL);
m_cg = new client_group(m_config, m_protocol, m_obj_gen);
}
~cg_thread()
{
if (m_cg != NULL) {
delete m_cg;
}
if (m_protocol != NULL) {
delete m_protocol;
}
}
int prepare(void)
{
if (m_cg->create_clients(m_config->clients) < (int) m_config->clients)
return -1;
return m_cg->prepare();
}
int start(void)
{
return pthread_create(&m_thread, NULL, cg_thread_start, (void *)this);
}
void join(void)
{
int* retval;
int ret;
ret = pthread_join(m_thread, (void **)&retval);
assert(ret == 0);
}
};
static void* cg_thread_start(void *t)
{
cg_thread* thread = (cg_thread*) t;
thread->m_cg->run();
thread->m_finished = true;
return t;
}
void size_to_str(unsigned long int size, char *buf, int buf_len)
{
if (size >= 1024*1024*1024) {
snprintf(buf, buf_len, "%.2fGB",
(float) size / (1024*1024*1024));
} else if (size >= 1024*1024) {
snprintf(buf, buf_len, "%.2fMB",
(float) size / (1024*1024));
} else {
snprintf(buf, buf_len, "%.2fKB",
(float) size / 1024);
}
}
run_stats run_benchmark(int run_id, benchmark_config* cfg, object_generator* obj_gen)
{
fprintf(stderr, "[RUN #%u] Preparing benchmark client...\n", run_id);
// prepare threads data
std::vector<cg_thread*> threads;
for (unsigned int i = 0; i < cfg->threads; i++) {
cg_thread* t = new cg_thread(i, cfg, obj_gen);
assert(t != NULL);
if (t->prepare() < 0) {
benchmark_error_log("error: failed to prepare thread %u for test.\n", i);
exit(1);
}
threads.push_back(t);
}
// launch threads
fprintf(stderr, "[RUN #%u] Launching threads now...\n", run_id);
for (std::vector<cg_thread*>::iterator i = threads.begin(); i != threads.end(); i++) {
(*i)->start();
}
// provide some feedback...
unsigned int active_threads = 0;
do {
active_threads = 0;
sleep(1);
unsigned long int total_ops = 0;
unsigned long int total_bytes = 0;
unsigned long int duration = 0;
unsigned long int total_latency = 0;
for (std::vector<cg_thread*>::iterator i = threads.begin(); i != threads.end(); i++) {
if (!(*i)->m_finished)
active_threads++;
total_ops += (*i)->m_cg->get_total_ops();
total_bytes += (*i)->m_cg->get_total_bytes();
total_latency += (*i)->m_cg->get_total_latency();
if ((*i)->m_cg->get_duration_usec() > duration)
duration = (*i)->m_cg->get_duration_usec();
}
unsigned long int ops_sec = 0;
unsigned long int bytes_sec = 0;
double avg_latency = 0;
if (duration > 1000000) {
ops_sec = (total_ops / (duration / 1000000));
bytes_sec = (total_bytes / (duration / 1000000));
avg_latency = ((double) total_latency / 1000 / total_ops) ;
}
char bytes_str[40];
size_to_str(bytes_sec, bytes_str, sizeof(bytes_str)-1);
fprintf(stderr, "[RUN #%u, %3u secs] %2u threads: %11lu ops, %7lu ops/sec, %s/sec, %5.2fmsec latency\r",
run_id, (unsigned int) (duration / 1000000), active_threads, total_ops, ops_sec, bytes_str, avg_latency);
} while (active_threads > 0);
fprintf(stderr, "\n\n");
// join all threads back and unify stats
run_stats stats;
for (std::vector<cg_thread*>::iterator i = threads.begin(); i != threads.end(); i++) {
(*i)->join();
(*i)->m_cg->merge_run_stats(&stats);
}
// Do we need to produce client stats?
if (cfg->client_stats != NULL) {
unsigned int cg_id = 0;
fprintf(stderr, "[RUN %u] Writing client stats files...\n", run_id);
for (std::vector<cg_thread*>::iterator i = threads.begin(); i != threads.end(); i++) {
char prefix[PATH_MAX];
snprintf(prefix, sizeof(prefix)-1, "%s-%u-%u", cfg->client_stats, run_id, cg_id++);
(*i)->m_cg->write_client_stats(prefix);
}
}
// clean up all client_groups. the main value of this is to be able to
// properly look for leaks...
while (threads.size() > 0) {
cg_thread* t = *threads.begin();
threads.erase(threads.begin());
delete t;
}
return stats;
}
int main(int argc, char *argv[])
{
struct benchmark_config cfg;
memset(&cfg, 0, sizeof(struct benchmark_config));
if (config_parse_args(argc, argv, &cfg) < 0) {
usage();
}
config_init_defaults(&cfg);
log_level = cfg.debug;
if (cfg.show_config) {
fprintf(stderr, "============== Configuration values: ==============\n");
config_print(stdout, &cfg);
fprintf(stderr, "===================================================\n");
}
struct rlimit rlim;
if (getrlimit(RLIMIT_NOFILE, &rlim) != 0) {
benchmark_error_log("error: getrlimit failed: %s\n", strerror(errno));
exit(1);
}
if (cfg.unix_socket != NULL &&
(cfg.server != NULL || cfg.port > 0)) {
benchmark_error_log("error: UNIX domain socket and TCP cannot be used together.\n");
exit(1);
}
unsigned int fds_needed = (cfg.threads * cfg.clients) + (cfg.threads * 10) + 10;
if (fds_needed > rlim.rlim_cur) {
if (fds_needed > rlim.rlim_max && getuid() != 0) {
benchmark_error_log("error: running the tool with this number of connections requires 'root' privilegs.\n");
exit(1);
}
rlim.rlim_cur = rlim.rlim_max = fds_needed;
if (setrlimit(RLIMIT_NOFILE, &rlim) != 0) {
benchmark_error_log("error: setrlimit failed: %s\n", strerror(errno));
exit(1);
}
}
// create and configure object generator
object_generator* obj_gen = NULL;
imported_keylist* keylist = NULL;
if (!cfg.data_import) {
if (cfg.data_verify) {
fprintf(stderr, "error: use data-verify only with data-import\n");
exit(1);
}
if (cfg.no_expiry) {
fprintf(stderr, "error: use no-expiry only with data-import\n");
exit(1);
}
obj_gen = new object_generator();
assert(obj_gen != NULL);
} else {
// check paramters
if (cfg.data_size ||
cfg.data_size_list.is_defined() ||
cfg.data_size_range.is_defined()) {
fprintf(stderr, "error: data size cannot be specified when importing.\n");
exit(1);
}
if (cfg.random_data) {
fprintf(stderr, "error: random-data cannot be specified when importing.\n");
exit(1);
}
if (!cfg.generate_keys &&
(cfg.key_maximum || cfg.key_minimum || cfg.key_prefix)) {
fprintf(stderr, "error: use key-minimum, key-maximum and key-prefix only with generate-keys.\n");
exit(1);
}
if (!cfg.generate_keys) {
// read keys
fprintf(stderr, "Reading keys from %s...", cfg.data_import);
keylist = new imported_keylist(cfg.data_import);
assert(keylist != NULL);
if (!keylist->read_keys()) {
fprintf(stderr, "\nerror: failed to read keys.\n");
exit(1);
} else {
fprintf(stderr, " %u keys read.\n", keylist->size());
}
}
obj_gen = new import_object_generator(cfg.data_import, keylist, cfg.no_expiry);
assert(obj_gen != NULL);
if (dynamic_cast<import_object_generator*>(obj_gen)->open_file() != true) {
fprintf(stderr, "error: %s: failed to open.\n", cfg.data_import);
exit(1);
}
}
if (cfg.authenticate) {
if (strcmp(cfg.protocol, "redis") != 0 &&
strcmp(cfg.protocol, "memcache_binary") != 0) {
fprintf(stderr, "error: authenticate can only be used with redis or memcache_binary.\n");
usage();
}
if (strcmp(cfg.protocol, "memcache_binary") == 0 &&
strchr(cfg.authenticate, ':') == NULL) {
fprintf(stderr, "error: binary_memcache credentials must be in the form of USER:PASSWORD.\n");
usage();
}
}
if (cfg.select_db > 0 && strcmp(cfg.protocol, "redis")) {
fprintf(stderr, "error: select-db can only be used with redis protocol.\n");
usage();
}
if (cfg.data_size) {
if (cfg.data_size_list.is_defined() || cfg.data_size_range.is_defined()) {
fprintf(stderr, "error: data-size cannot be used with data_size_list or data_size_range.\n");
usage();
}
obj_gen->set_data_size_fixed(cfg.data_size);
} else if (cfg.data_size_list.is_defined()) {
if (cfg.data_size_range.is_defined()) {
fprintf(stderr, "error: data-size-list cannot be used with data-size-range.\n");
usage();
}
obj_gen->set_data_size_list(&cfg.data_size_list);
} else if (cfg.data_size_range.is_defined()) {
obj_gen->set_data_size_range(cfg.data_size_range.min, cfg.data_size_range.max);
} else if (!cfg.data_import) {
fprintf(stderr, "error: data-size, data-size-list or data-size-range must be specified.\n");
usage();
}
if (!cfg.data_import) {
obj_gen->set_random_data(cfg.random_data);
}
if (!cfg.data_import || cfg.generate_keys) {
obj_gen->set_key_prefix(cfg.key_prefix);
obj_gen->set_key_range(cfg.key_minimum, cfg.key_maximum);
}
obj_gen->set_expiry_range(cfg.expiry_range.min, cfg.expiry_range.max);
// Prepare output file
FILE *outfile;
if (cfg.out_file != NULL) {
fprintf(stderr, "Writing results to %s...\n", cfg.out_file);
outfile = fopen(cfg.out_file, "w");
if (!outfile) {
perror(cfg.out_file);
}
} else {
outfile = stdout;
}
if (!cfg.verify_only) {
std::vector<run_stats> all_stats;
for (unsigned int run_id = 1; run_id <= cfg.run_count; run_id++) {
if (run_id > 1)
sleep(1); // let connections settle
run_stats stats = run_benchmark(run_id, &cfg, obj_gen);
all_stats.push_back(stats);
}
// Print some run information
fprintf(outfile,
"%-9u Threads\n"
"%-9u Connections per thread\n"
"%-9u %s\n",
cfg.threads, cfg.clients,
cfg.requests > 0 ? cfg.requests : cfg.test_time,
cfg.requests > 0 ? "Requests per thread" : "Seconds");
// If more than 1 run was used, compute best, worst and average
if (cfg.run_count > 1) {
unsigned int min_ops_sec = (unsigned int) -1;
unsigned int max_ops_sec = 0;
run_stats* worst = NULL;
run_stats* best = NULL;
for (std::vector<run_stats>::iterator i = all_stats.begin(); i != all_stats.end(); i++) {
unsigned int secs = (i->get_duration_usec() / 1000);
unsigned int ops_sec = (i->get_total_ops() / (secs > 0 ? secs : 1)) * 1000;
if (ops_sec < min_ops_sec) {
min_ops_sec = ops_sec;
worst = &(*i);
}
if (ops_sec > max_ops_sec) {
max_ops_sec = ops_sec;
best = &(*i);
}
}
fprintf(outfile, "\n\n"
"BEST RUN RESULTS\n"
"========================================================================\n");
best->print(outfile);
fprintf(outfile, "\n\n"
"WORST RUN RESULTS\n"
"========================================================================\n");
worst->print(outfile);
fprintf(outfile, "\n\n"
"AGGREGATED AVERAGE RESULTS (%u runs)\n"
"========================================================================\n", cfg.run_count);
run_stats average;
average.aggregate_average(all_stats);
average.print(outfile);
} else {
all_stats.begin()->print(outfile);
}
}
// If needed, data verification is done now...
if (cfg.data_verify) {
struct event_base *verify_event_base = event_base_new();
abstract_protocol *verify_protocol = protocol_factory(cfg.protocol);
verify_client *client = new verify_client(verify_event_base, &cfg, verify_protocol, obj_gen);
fprintf(outfile, "\n\nPerforming data verification...\n");
// Run client in verification mode
client->prepare();
event_base_dispatch(verify_event_base);
fprintf(outfile, "Data verification completed:\n"
"%-10llu keys verified successfuly.\n"
"%-10llu keys failed.\n",
client->get_verified_keys(),
client->get_errors());
// Clean up...
delete client;
delete verify_protocol;
event_base_free(verify_event_base);
}
if (outfile != stdout) {
fclose(outfile);
}
delete obj_gen;
if (keylist != NULL)
delete keylist;
}