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client.cpp
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client.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
#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#ifdef HAVE_FCNTL_H
#include <fcntl.h>
#endif
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#ifdef HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif
#ifdef HAVE_NETINET_TCP_H
#include <netinet/tcp.h>
#endif
#ifdef HAVE_LIMITS_H
#include <limits.h>
#endif
#ifdef HAVE_ASSERT_H
#include <assert.h>
#endif
#include <algorithm>
#include "client.h"
#include "obj_gen.h"
#include "memtier_benchmark.h"
void client_event_handler(evutil_socket_t sfd, short evtype, void *opaque)
{
client *c = (client *) opaque;
assert(c != NULL);
assert(c->get_sockfd() == sfd);
c->handle_event(evtype);
}
inline long long int ts_diff(struct timeval a, struct timeval b)
{
unsigned long long aval = a.tv_sec * 1000000 + a.tv_usec;
unsigned long long bval = b.tv_sec * 1000000 + b.tv_usec;
return bval - aval;
}
inline unsigned long int ts_diff_now(struct timeval a)
{
struct timeval b;
gettimeofday(&b, NULL);
unsigned long long aval = a.tv_sec * 1000000 + a.tv_usec;
unsigned long long bval = b.tv_sec * 1000000 + b.tv_usec;
return bval - aval;
}
client::request::request(request_type type, unsigned int size, struct timeval* sent_time, unsigned int keys)
: m_type(type), m_size(size), m_keys(keys)
{
if (sent_time != NULL)
m_sent_time = *sent_time;
else {
gettimeofday(&m_sent_time, NULL);
}
}
bool client::setup_client(benchmark_config *config, abstract_protocol *protocol, object_generator *objgen)
{
m_config = config;
assert(m_config != NULL);
if (m_config->unix_socket) {
m_unix_sockaddr = (struct sockaddr_un *) malloc(sizeof(struct sockaddr_un));
assert(m_unix_sockaddr != NULL);
m_unix_sockaddr->sun_family = AF_UNIX;
strncpy(m_unix_sockaddr->sun_path, m_config->unix_socket, sizeof(m_unix_sockaddr->sun_path)-1);
m_unix_sockaddr->sun_path[sizeof(m_unix_sockaddr->sun_path)-1] = '\0';
} else {
struct addrinfo hints;
char port_str[20];
memset(&hints, 0, sizeof(hints));
hints.ai_flags = AI_PASSIVE;
hints.ai_socktype = SOCK_STREAM;
hints.ai_family = AF_INET; // Don't play with IPv6 for now...
snprintf(port_str, sizeof(port_str)-1, "%u", m_config->port);
int error = getaddrinfo(m_config->server,
port_str, &hints, &m_server_addr);
if (error != 0) {
benchmark_error_log("%s:%u: failed to resolve: %s\n",
m_config->server, m_config->port, gai_strerror(error));
return false;
}
}
m_read_buf = evbuffer_new();
assert(m_read_buf != NULL);
m_write_buf = evbuffer_new();
assert(m_write_buf != NULL);
m_protocol = protocol->clone();
assert(m_protocol != NULL);
m_protocol->set_buffers(m_read_buf, m_write_buf);
m_obj_gen = objgen->clone();
assert(m_obj_gen != NULL);
m_keylist = new keylist(m_config->multi_key_get + 1);
assert(m_keylist != NULL);
return true;
}
client::client(client_group* group) :
m_sockfd(-1), m_server_addr(NULL), m_unix_sockaddr(NULL), m_event(NULL), m_event_base(NULL),
m_read_buf(NULL), m_write_buf(NULL), m_initialized(false), m_connected(false),
m_authentication(auth_none), m_db_selection(select_none),
m_config(NULL), m_protocol(NULL), m_obj_gen(NULL),
m_reqs_processed(0),
m_set_ratio_count(0),
m_get_ratio_count(0)
{
m_event_base = group->get_event_base();
if (!setup_client(group->get_config(), group->get_protocol(), group->get_obj_gen())) {
return;
}
benchmark_debug_log("new client %p successfully set up.\n", this);
m_initialized = true;
}
client::client(struct event_base *event_base,
benchmark_config *config,
abstract_protocol *protocol,
object_generator *obj_gen) :
m_sockfd(-1), m_server_addr(NULL), m_unix_sockaddr(NULL), m_event(NULL), m_event_base(NULL),
m_read_buf(NULL), m_write_buf(NULL), m_initialized(false), m_connected(false),
m_authentication(auth_none), m_db_selection(select_none),
m_config(NULL), m_protocol(NULL), m_obj_gen(NULL),
m_reqs_processed(0),
m_set_ratio_count(0),
m_get_ratio_count(0)
{
m_event_base = event_base;
if (!setup_client(config, protocol, obj_gen)) {
return;
}
benchmark_debug_log("new client %p successfully set up.\n", this);
m_initialized = true;
}
client::~client()
{
if (m_event != NULL) {
event_free(m_event);
m_event = NULL;
}
if (m_server_addr != NULL) {
freeaddrinfo(m_server_addr);
m_server_addr = NULL;
}
if (m_unix_sockaddr != NULL) {
free(m_unix_sockaddr);
m_unix_sockaddr = NULL;
}
if (m_read_buf != NULL) {
evbuffer_free(m_read_buf);
m_read_buf = NULL;
}
if (m_write_buf != NULL) {
evbuffer_free(m_write_buf);
m_write_buf = NULL;
}
if (m_sockfd != -1) {
close(m_sockfd);
m_sockfd = -1;
}
if (m_protocol != NULL) {
delete m_protocol;
m_protocol = NULL;
}
if (m_obj_gen != NULL) {
delete m_obj_gen;
m_obj_gen = NULL;
}
if (m_keylist != NULL) {
delete m_keylist;
m_keylist = NULL;
}
}
bool client::initialized(void)
{
return m_initialized;
}
void client::disconnect(void)
{
if (m_sockfd != -1) {
close(m_sockfd);
m_sockfd = -1;
}
evbuffer_drain(m_read_buf, evbuffer_get_length(m_read_buf));
evbuffer_drain(m_write_buf, evbuffer_get_length(m_write_buf));
int ret = event_del(m_event);
assert(ret == 0);
m_connected = false;
m_authentication = auth_none;
m_db_selection = select_none;
}
int client::connect(void)
{
if (!m_server_addr && !m_unix_sockaddr) {
benchmark_error_log("connect: server host/port failed to resolve, aborting.\n");
return -1;
}
// clean up existing socket/buffers
if (m_sockfd != -1)
close(m_sockfd);
evbuffer_drain(m_read_buf, evbuffer_get_length(m_read_buf));
evbuffer_drain(m_write_buf, evbuffer_get_length(m_write_buf));
if (m_unix_sockaddr != NULL) {
m_sockfd = socket(AF_UNIX, SOCK_STREAM, 0);
if (m_sockfd < 0) {
return -errno;
}
} else {
// initialize socket
m_sockfd = socket(m_server_addr->ai_family, m_server_addr->ai_socktype, m_server_addr->ai_protocol);
if (m_sockfd < 0) {
return -errno;
}
// configure socket behavior
struct linger ling = {0, 0};
int flags = 1;
int error = setsockopt(m_sockfd, SOL_SOCKET, SO_KEEPALIVE, (void *)&flags, sizeof(flags));
assert(error == 0);
error = setsockopt(m_sockfd, SOL_SOCKET, SO_LINGER, (void *)&ling, sizeof(ling));
assert(error == 0);
error = setsockopt(m_sockfd, IPPROTO_TCP, TCP_NODELAY, (void *)&flags, sizeof(flags));
assert(error == 0);
}
// set non-blcoking behavior
int flags = 1;
if ((flags = fcntl(m_sockfd, F_GETFL, 0)) < 0 ||
fcntl(m_sockfd, F_SETFL, flags | O_NONBLOCK) < 0) {
benchmark_error_log("connect: failed to set non-blocking flag.\n");
close(m_sockfd);
m_sockfd = -1;
return -1;
}
// set up event
if (!m_event) {
m_event = event_new(m_event_base,
m_sockfd, EV_WRITE, client_event_handler, (void *)this);
assert(m_event != NULL);
} else {
int ret = event_del(m_event);
assert(ret == 0);
ret = event_assign(m_event, m_event_base,
m_sockfd, EV_WRITE, client_event_handler, (void *)this);
assert(ret == 0);
}
int ret = event_add(m_event, NULL);
assert(ret == 0);
// call connect
if (::connect(m_sockfd,
m_server_addr != NULL ? m_server_addr->ai_addr : (struct sockaddr *) m_unix_sockaddr,
m_server_addr != NULL ? m_server_addr->ai_addrlen : sizeof(struct sockaddr_un)) == -1) {
if (errno == EINPROGRESS || errno == EWOULDBLOCK)
return 0;
benchmark_error_log("connect failed, error = %s\n", strerror(errno));
return -1;
}
return 0;
}
void client::handle_event(short evtype)
{
// connect() returning to us? normally we expect EV_WRITE, but for UNIX domain
// sockets we workaround since connect() returned immediately, but we don't want
// to do any I/O from the client::connect() call...
if (!m_connected && (evtype == EV_WRITE || m_unix_sockaddr != NULL)) {
int error = -1;
socklen_t errsz = sizeof(error);
if (getsockopt(m_sockfd, SOL_SOCKET, SO_ERROR, (void *) &error, &errsz) == -1) {
benchmark_error_log("connect: error getting connect response (getsockopt): %s\n", strerror(errno));
return;
}
if (error != 0) {
benchmark_error_log("connect: connection failed: %s\n", strerror(error));
return;
}
m_connected = true;
if (!m_reqs_processed) {
process_first_request();
} else {
benchmark_debug_log("reconnection complete, proceeding with test\n");
fill_pipeline();
}
}
assert(m_connected == true);
if ((evtype & EV_WRITE) == EV_WRITE && evbuffer_get_length(m_write_buf) > 0) {
if (evbuffer_write(m_write_buf, m_sockfd) < 0) {
if (errno != EWOULDBLOCK) {
benchmark_error_log("write error: %s\n", strerror(errno));
disconnect();
return;
}
}
}
if ((evtype & EV_READ) == EV_READ) {
int ret = 1;
while (ret > 0) {
ret = evbuffer_read(m_read_buf, m_sockfd, -1);
}
if (ret < 0 && errno != EAGAIN && errno != EWOULDBLOCK) {
benchmark_error_log("read error: %s\n", strerror(errno));
disconnect();
return;
}
if (ret == 0) {
benchmark_error_log("connection dropped.\n");
disconnect();
return;
}
if (evbuffer_get_length(m_read_buf) > 0) {
process_response();
// process_response may have disconnected, in which case
// we just abort and wait for libevent to call us back sometime
if (!m_connected) {
return;
}
}
}
// update event
short new_evtype = 0;
if (!finished()) {
new_evtype = EV_READ;
}
if (evbuffer_get_length(m_write_buf) > 0) {
assert(finished() == false);
new_evtype |= EV_WRITE;
}
if (new_evtype) {
int ret = event_assign(m_event, m_event_base,
m_sockfd, new_evtype, client_event_handler, (void *)this);
assert(ret == 0);
ret = event_add(m_event, NULL);
assert(ret == 0);
} else {
benchmark_debug_log("nothing else to do, test is finished.\n");
m_stats.set_end_time(NULL);
}
}
bool client::finished(void)
{
if (m_config->requests > 0 && m_reqs_processed >= m_config->requests)
return true;
if (m_config->test_time > 0 && m_stats.get_duration() >= m_config->test_time)
return true;
return false;
}
bool client::send_conn_setup_commands(void)
{
bool sent = false;
if (m_config->authenticate && m_authentication != auth_done) {
if (m_authentication == auth_none) {
benchmark_debug_log("sending authentication command.\n");
m_protocol->authenticate(m_config->authenticate);
m_pipeline.push(new client::request(rt_auth, 0, NULL, 0));
m_authentication = auth_sent;
sent = true;
}
}
if (m_config->select_db && m_db_selection != select_done) {
if (m_db_selection == select_none) {
benchmark_debug_log("sending db selection command.\n");
m_protocol->select_db(m_config->select_db);
m_pipeline.push(new client::request(rt_select_db, 0, NULL, 0));
m_db_selection = select_sent;
sent = true;
}
}
return sent;
}
bool client::is_conn_setup_done(void)
{
if (m_config->authenticate && m_authentication != auth_done)
return false;
if (m_config->select_db && m_db_selection != select_done)
return false;
return true;
}
void client::create_request(void)
{
// are we set or get? this depends on the ratio
if (m_set_ratio_count < m_config->ratio.a) {
// set command
data_object *obj = m_obj_gen->get_object(m_config->key_pattern[0] == 'R' ? 0 : 1);
unsigned int key_len;
const char *key = obj->get_key(&key_len);
unsigned int value_len;
const char *value = obj->get_value(&value_len);
int cmd_size = 0;
m_set_ratio_count++;
benchmark_debug_log("SET key=[%.*s] value_len=%u expiry=%u\n",
key_len, key, value_len, obj->get_expiry());
cmd_size = m_protocol->write_command_set(key, key_len, value, value_len,
obj->get_expiry());
m_pipeline.push(new client::request(rt_set, cmd_size, NULL, 1));
} else if (m_get_ratio_count < m_config->ratio.b) {
// get command
int cmd_size = 0;
if (m_config->multi_key_get > 0) {
unsigned int keys_count;
keys_count = m_config->ratio.b - m_get_ratio_count;
if ((int)keys_count > m_config->multi_key_get)
keys_count = m_config->multi_key_get;
m_keylist->clear();
while (m_keylist->get_keys_count() < keys_count) {
unsigned int keylen;
const char *key = m_obj_gen->get_key(m_config->key_pattern[2] == 'R' ? 0 : 2, &keylen);
assert(key != NULL);
assert(keylen > 0);
m_keylist->add_key(key, keylen);
}
const char *first_key, *last_key;
unsigned int first_key_len, last_key_len;
first_key = m_keylist->get_key(0, &first_key_len);
last_key = m_keylist->get_key(m_keylist->get_keys_count()-1, &last_key_len);
benchmark_debug_log("MGET %d keys [%.*s] .. [%.*s]\n",
m_keylist->get_keys_count(), first_key_len, first_key, last_key_len, last_key);
cmd_size = m_protocol->write_command_multi_get(m_keylist);
m_get_ratio_count += keys_count;
m_pipeline.push(new client::request(rt_get, cmd_size, NULL, m_keylist->get_keys_count()));
} else {
unsigned int keylen;
const char *key = m_obj_gen->get_key(m_config->key_pattern[2] == 'R' ? 0 : 2, &keylen);
assert(key != NULL);
assert(keylen > 0);
benchmark_debug_log("GET key=[%.*s]\n", keylen, key);
cmd_size = m_protocol->write_command_get(key, keylen);
m_get_ratio_count++;
m_pipeline.push(new client::request(rt_get, cmd_size, NULL, 1));
}
} else {
// overlap counters
m_get_ratio_count = m_set_ratio_count = 0;
}
}
void client::fill_pipeline(void)
{
while (!finished() && m_pipeline.size() < m_config->pipeline) {
if (!is_conn_setup_done()) {
send_conn_setup_commands();
return;
}
// don't exceed requests
if (m_config->requests > 0 && m_reqs_processed + m_pipeline.size() >= m_config->requests)
break;
// if we have reconnect_interval stop enlarging the pipeline
// on time
if (m_config->reconnect_interval) {
if ((m_reqs_processed % m_config->reconnect_interval) + m_pipeline.size() >= m_config->reconnect_interval)
return;
}
create_request();
}
}
int client::prepare(void)
{
if (!m_unix_sockaddr && (!m_server_addr || !m_protocol))
return -1;
int ret = this->connect();
if (ret < 0) {
benchmark_error_log("prepare: failed to connect, test aborted.\n");
return ret;
}
return 0;
}
void client::process_first_request(void)
{
struct timeval now;
gettimeofday(&now, NULL);
m_stats.set_start_time(&now);
fill_pipeline();
}
void client::handle_response(request *request, protocol_response *response)
{
switch (request->m_type) {
case rt_get:
m_stats.update_get_op(NULL,
request->m_size + response->get_total_len(),
ts_diff_now(request->m_sent_time),
response->get_hits(),
request->m_keys - response->get_hits());
break;
case rt_set:
m_stats.update_set_op(NULL,
request->m_size + response->get_total_len(),
ts_diff_now(request->m_sent_time));
break;
default:
assert(0);
break;
}
}
void client::process_response(void)
{
int ret;
bool responses_handled = false;
while ((ret = m_protocol->parse_response()) > 0) {
bool error = false;
protocol_response *r = m_protocol->get_response();
client::request* req = m_pipeline.front();
m_pipeline.pop();
if (req->m_type == rt_auth) {
if (r->is_error()) {
benchmark_error_log("error: authentication failed [%s]\n", r->get_status());
error = true;
} else {
m_authentication = auth_done;
benchmark_debug_log("authentication successful.\n");
}
} else if (req->m_type == rt_select_db) {
if (strcmp(r->get_status(), "+OK") != 0) {
benchmark_error_log("database selection failed.\n");
error = true;
} else {
benchmark_debug_log("database selection successful.\n");
m_db_selection = select_done;
}
} else {
benchmark_debug_log("handled response (first line): %s, %d hits, %d misses\n",
r->get_status(),
r->get_hits(),
req->m_keys - r->get_hits());
if (r->is_error()) {
benchmark_error_log("error response: %s\n", r->get_status());
}
handle_response(req, r);
m_reqs_processed++;
responses_handled = true;
}
delete req;
if (error) {
return;
}
}
if (ret == -1) {
benchmark_error_log("error: response parsing failed.\n");
}
if (m_config->reconnect_interval > 0 && responses_handled) {
if ((m_reqs_processed % m_config->reconnect_interval) == 0) {
assert(m_pipeline.size() == 0);
benchmark_debug_log("reconnecting, m_reqs_processed = %u\n", m_reqs_processed);
disconnect();
ret = connect();
assert(ret == 0);
return;
}
}
fill_pipeline();
}
///////////////////////////////////////////////////////////////////////////
verify_client::verify_request::verify_request(request_type type,
unsigned int size,
struct timeval* sent_time,
unsigned int keys,
const char *key,
unsigned int key_len,
const char *value,
unsigned int value_len) :
client::request(type, size, sent_time, keys),
m_key(NULL), m_key_len(0),
m_value(NULL), m_value_len(0)
{
m_key_len = key_len;
m_key = (char *)malloc(key_len);
memcpy(m_key, key, m_key_len);
m_value_len = value_len;
m_value = (char *)malloc(value_len);
memcpy(m_value, value, m_value_len);
}
verify_client::verify_request::~verify_request(void)
{
if (m_key != NULL) {
free((void *) m_key);
m_key = NULL;
}
if (m_value != NULL) {
free((void *) m_value);
m_value = NULL;
}
}
verify_client::verify_client(struct event_base *event_base,
benchmark_config *config,
abstract_protocol *protocol,
object_generator *obj_gen) : client(event_base, config, protocol, obj_gen),
m_finished(false), m_verified_keys(0), m_errors(0)
{
m_protocol->set_keep_value(true);
}
unsigned long long int verify_client::get_verified_keys(void)
{
return m_verified_keys;
}
unsigned long long int verify_client::get_errors(void)
{
return m_errors;
}
void verify_client::create_request(void)
{
// TODO: Refactor client::create_reqeust so this can be unified.
if (m_set_ratio_count < m_config->ratio.a) {
// Prepare a GET request that will be compared against a previous
// SET request.
data_object *obj = m_obj_gen->get_object(m_config->key_pattern[0] == 'R' ? 0 : 1);
unsigned int key_len;
const char *key = obj->get_key(&key_len);
unsigned int value_len;
const char *value = obj->get_value(&value_len);
unsigned int cmd_size;
m_set_ratio_count++;
cmd_size = m_protocol->write_command_get(key, key_len);
m_pipeline.push(new verify_client::verify_request(rt_get,
cmd_size, NULL, 1, key, key_len, value, value_len));
} else if (m_get_ratio_count < m_config->ratio.b) {
// We don't really care about GET operations, all we do here is keep
// the object generator synced.
if (m_config->multi_key_get > 0) {
unsigned int keys_count;
keys_count = m_config->ratio.b - m_get_ratio_count;
if ((int)keys_count > m_config->multi_key_get)
keys_count = m_config->multi_key_get;
m_keylist->clear();
while (m_keylist->get_keys_count() < keys_count) {
unsigned int keylen;
const char *key = m_obj_gen->get_key(m_config->key_pattern[2] == 'R' ? 0 : 2, &keylen);
assert(key != NULL);
assert(keylen > 0);
m_keylist->add_key(key, keylen);
}
m_get_ratio_count += keys_count;
} else {
unsigned int keylen;
m_obj_gen->get_key(m_config->key_pattern[2] == 'R' ? 0 : 2, &keylen);
m_get_ratio_count++;
}
// We don't really send this request, but need to count it to be in sync.
m_reqs_processed++;
} else {
m_get_ratio_count = m_set_ratio_count = 0;
}
}
void verify_client::handle_response(request *request, protocol_response *response)
{
unsigned int rvalue_len;
const char *rvalue = response->get_value(&rvalue_len);
verify_request *vr = static_cast<verify_request *>(request);
assert(vr->m_type == rt_get);
if (response->is_error()) {
benchmark_error_log("error: request for key [%.*s] failed: %s\n",
vr->m_key_len, vr->m_key, response->get_status());
m_errors++;
} else {
if (!rvalue || rvalue_len != vr->m_value_len || memcmp(rvalue, vr->m_value, rvalue_len) != 0) {
benchmark_error_log("error: key [%.*s]: expected [%.*s], got [%.*s]\n",
vr->m_key_len, vr->m_key,
vr->m_value_len, vr->m_value,
rvalue_len, rvalue);
m_errors++;
} else {
benchmark_debug_log("key: [%.*s] verified successfuly.\n",
vr->m_key_len, vr->m_key);
m_verified_keys++;
}
}
}
bool verify_client::finished(void)
{
if (m_finished)
return true;
if (m_config->requests > 0 && m_reqs_processed >= m_config->requests)
return true;
return false;
}
///////////////////////////////////////////////////////////////////////////
client_group::client_group(benchmark_config* config, abstract_protocol *protocol, object_generator* obj_gen) :
m_base(NULL), m_config(config), m_protocol(protocol), m_obj_gen(obj_gen)
{
m_base = event_base_new();
assert(m_base != NULL);
assert(protocol != NULL);
assert(obj_gen != NULL);
}
client_group::~client_group(void)
{
for (std::vector<client*>::iterator i = m_clients.begin(); i != m_clients.end(); i++) {
client* c = *i;
delete c;
}
m_clients.clear();
if (m_base != NULL)
event_base_free(m_base);
m_base = NULL;
}
int client_group::create_clients(int num)
{
for (int i = 0; i < num; i++) {
client* c = new client(this);
assert(c != NULL);
if (!c->initialized()) {
delete c;
return i;
}
m_clients.push_back(c);
}
return num;
}
int client_group::prepare(void)
{
for (std::vector<client*>::iterator i = m_clients.begin(); i != m_clients.end(); i++) {
client* c = *i;
int ret = c->prepare();
if (ret < 0) {
return ret;
}
}
return 0;
}
void client_group::run(void)
{
event_base_dispatch(m_base);
}
unsigned long int client_group::get_total_bytes(void)
{
unsigned long int total_bytes = 0;
for (std::vector<client*>::iterator i = m_clients.begin(); i != m_clients.end(); i++) {
total_bytes += (*i)->get_stats()->get_total_bytes();
}
return total_bytes;
}
unsigned long int client_group::get_total_ops(void)
{
unsigned long int total_ops = 0;
for (std::vector<client*>::iterator i = m_clients.begin(); i != m_clients.end(); i++) {
total_ops += (*i)->get_stats()->get_total_ops();
}
return total_ops;
}
unsigned long int client_group::get_total_latency(void)
{
unsigned long int total_latency = 0;
for (std::vector<client*>::iterator i = m_clients.begin(); i != m_clients.end(); i++) {
total_latency += (*i)->get_stats()->get_total_latency();
}
return total_latency;
}
unsigned long int client_group::get_duration_usec(void)
{
unsigned long int duration = 0;
for (std::vector<client*>::iterator i = m_clients.begin(); i != m_clients.end(); i++) {
if ((*i)->get_stats()->get_duration_usec() > duration)
duration = (*i)->get_stats()->get_duration_usec();
}
return duration;
}
void client_group::merge_run_stats(run_stats* target)
{
assert(target != NULL);
for (std::vector<client*>::iterator i = m_clients.begin(); i != m_clients.end(); i++) {
target->merge(*(*i)->get_stats());
}
}
void client_group::write_client_stats(const char *prefix)
{
unsigned int client_id = 0;
for (std::vector<client*>::iterator i = m_clients.begin(); i != m_clients.end(); i++) {
char filename[PATH_MAX];
snprintf(filename, sizeof(filename)-1, "%s-%u.csv", prefix, client_id++);
if (!(*i)->get_stats()->save_csv(filename)) {
fprintf(stderr, "error: %s: failed to write client stats.\n", filename);
}
}
}
///////////////////////////////////////////////////////////////////////////
run_stats::one_second_stats::one_second_stats(unsigned int second)
{
reset(second);
}
void run_stats::one_second_stats::reset(unsigned int second)
{
m_second = second;
m_bytes_get = m_bytes_set = 0;
m_ops_get = m_ops_set = 0;
m_get_hits = m_get_misses = 0;
m_total_get_latency = 0;
m_total_set_latency = 0;
}
void run_stats::one_second_stats::merge(const one_second_stats& other)
{
m_bytes_get += other.m_bytes_get;
m_bytes_set += other.m_bytes_set;
m_ops_get += other.m_ops_get;
m_ops_set += other.m_ops_set;
m_get_hits += other.m_get_hits;
m_get_misses += other.m_get_misses;
m_total_get_latency += other.m_total_get_latency;
m_total_set_latency += other.m_total_set_latency;
}
run_stats::totals::totals() :
m_ops_sec_set(0),
m_ops_sec_get(0),
m_ops_sec(0),
m_hits_sec(0),
m_misses_sec(0),
m_bytes_sec_set(0),
m_bytes_sec_get(0),
m_bytes_sec(0),
m_latency_set(0),
m_latency_get(0),
m_latency(0),
m_bytes(0),
m_ops_set(0),
m_ops_get(0),
m_ops(0)
{
}
void run_stats::totals::add(const run_stats::totals& other)
{
m_ops_sec_set += other.m_ops_sec_set;
m_ops_sec_get += other.m_ops_sec_get;
m_ops_sec += other.m_ops_sec;
m_hits_sec += other.m_hits_sec;
m_misses_sec += other.m_misses_sec;
m_bytes_sec_set += other.m_bytes_sec_set;
m_bytes_sec_get += other.m_bytes_sec_get;
m_bytes_sec += other.m_bytes_sec;
m_latency_set += other.m_latency_set;