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#include "common.h"
volatile struct global_statistics global_statistics = {
.connected_clients = 0,
.web_requests = 0,
.web_usec = 0,
.bytes_received = 0,
.bytes_sent = 0,
.content_size = 0,
.compressed_content_size = 0
};
netdata_mutex_t global_statistics_mutex = NETDATA_MUTEX_INITIALIZER;
inline void global_statistics_lock(void) {
netdata_mutex_lock(&global_statistics_mutex);
}
inline void global_statistics_unlock(void) {
netdata_mutex_unlock(&global_statistics_mutex);
}
void finished_web_request_statistics(uint64_t dt,
uint64_t bytes_received,
uint64_t bytes_sent,
uint64_t content_size,
uint64_t compressed_content_size) {
#if defined(HAVE_C___ATOMIC) && !defined(NETDATA_NO_ATOMIC_INSTRUCTIONS)
uint64_t old_web_usec_max = global_statistics.web_usec_max;
while(dt > old_web_usec_max)
__atomic_compare_exchange(&global_statistics.web_usec_max, &old_web_usec_max, &dt, 1, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST);
__atomic_fetch_add(&global_statistics.web_requests, 1, __ATOMIC_SEQ_CST);
__atomic_fetch_add(&global_statistics.web_usec, dt, __ATOMIC_SEQ_CST);
__atomic_fetch_add(&global_statistics.bytes_received, bytes_received, __ATOMIC_SEQ_CST);
__atomic_fetch_add(&global_statistics.bytes_sent, bytes_sent, __ATOMIC_SEQ_CST);
__atomic_fetch_add(&global_statistics.content_size, content_size, __ATOMIC_SEQ_CST);
__atomic_fetch_add(&global_statistics.compressed_content_size, compressed_content_size, __ATOMIC_SEQ_CST);
#else
#warning NOT using atomic operations - using locks for global statistics
if (web_server_mode == WEB_SERVER_MODE_MULTI_THREADED)
global_statistics_lock();
if (dt > global_statistics.web_usec_max)
global_statistics.web_usec_max = dt;
global_statistics.web_requests++;
global_statistics.web_usec += dt;
global_statistics.bytes_received += bytes_received;
global_statistics.bytes_sent += bytes_sent;
global_statistics.content_size += content_size;
global_statistics.compressed_content_size += compressed_content_size;
if (web_server_mode == WEB_SERVER_MODE_MULTI_THREADED)
global_statistics_unlock();
#endif
}
void web_client_connected(void) {
#if defined(HAVE_C___ATOMIC) && !defined(NETDATA_NO_ATOMIC_INSTRUCTIONS)
__atomic_fetch_add(&global_statistics.connected_clients, 1, __ATOMIC_SEQ_CST);
#else
if (web_server_mode == WEB_SERVER_MODE_MULTI_THREADED)
global_statistics_lock();
global_statistics.connected_clients++;
if (web_server_mode == WEB_SERVER_MODE_MULTI_THREADED)
global_statistics_unlock();
#endif
}
void web_client_disconnected(void) {
#if defined(HAVE_C___ATOMIC) && !defined(NETDATA_NO_ATOMIC_INSTRUCTIONS)
__atomic_fetch_sub(&global_statistics.connected_clients, 1, __ATOMIC_SEQ_CST);
#else
if (web_server_mode == WEB_SERVER_MODE_MULTI_THREADED)
global_statistics_lock();
global_statistics.connected_clients--;
if (web_server_mode == WEB_SERVER_MODE_MULTI_THREADED)
global_statistics_unlock();
#endif
}
inline void global_statistics_copy(struct global_statistics *gs, uint8_t options) {
#if defined(HAVE_C___ATOMIC) && !defined(NETDATA_NO_ATOMIC_INSTRUCTIONS)
gs->connected_clients = __atomic_fetch_add(&global_statistics.connected_clients, 0, __ATOMIC_SEQ_CST);
gs->web_requests = __atomic_fetch_add(&global_statistics.web_requests, 0, __ATOMIC_SEQ_CST);
gs->web_usec = __atomic_fetch_add(&global_statistics.web_usec, 0, __ATOMIC_SEQ_CST);
gs->web_usec_max = __atomic_fetch_add(&global_statistics.web_usec_max, 0, __ATOMIC_SEQ_CST);
gs->bytes_received = __atomic_fetch_add(&global_statistics.bytes_received, 0, __ATOMIC_SEQ_CST);
gs->bytes_sent = __atomic_fetch_add(&global_statistics.bytes_sent, 0, __ATOMIC_SEQ_CST);
gs->content_size = __atomic_fetch_add(&global_statistics.content_size, 0, __ATOMIC_SEQ_CST);
gs->compressed_content_size = __atomic_fetch_add(&global_statistics.compressed_content_size, 0, __ATOMIC_SEQ_CST);
if(options & GLOBAL_STATS_RESET_WEB_USEC_MAX) {
uint64_t n = 0;
__atomic_compare_exchange(&global_statistics.web_usec_max, &gs->web_usec_max, &n, 1, __ATOMIC_SEQ_CST,
__ATOMIC_SEQ_CST);
}
#else
global_statistics_lock();
memcpy(gs, (const void *)&global_statistics, sizeof(struct global_statistics));
if (options & GLOBAL_STATS_RESET_WEB_USEC_MAX)
global_statistics.web_usec_max = 0;
global_statistics_unlock();
#endif
}
void global_statistics_charts(void) {
static unsigned long long old_web_requests = 0,
old_web_usec = 0,
old_content_size = 0,
old_compressed_content_size = 0;
static collected_number compression_ratio = -1,
average_response_time = -1;
struct global_statistics gs;
struct rusage me, thread;
global_statistics_copy(&gs, GLOBAL_STATS_RESET_WEB_USEC_MAX);
getrusage(RUSAGE_THREAD, &thread);
getrusage(RUSAGE_SELF, &me);
{
static RRDSET *st_cpu_thread = NULL;
static RRDDIM *rd_cpu_thread_user = NULL,
*rd_cpu_thread_system = NULL;
#ifdef __FreeBSD__
if (unlikely(!st_cpu_thread)) {
st_cpu_thread = rrdset_create_localhost(
"netdata"
, "plugin_freebsd_cpu"
, NULL
, "freebsd"
, NULL
, "NetData FreeBSD Plugin CPU usage"
, "milliseconds/s"
, "netdata"
, "stats"
, 132000
, localhost->rrd_update_every
, RRDSET_TYPE_STACKED
);
#else
if (unlikely(!st_cpu_thread)) {
st_cpu_thread = rrdset_create_localhost(
"netdata"
, "plugin_proc_cpu"
, NULL
, "proc"
, NULL
, "NetData Proc Plugin CPU usage"
, "milliseconds/s"
, "netdata"
, "stats"
, 132000
, localhost->rrd_update_every
, RRDSET_TYPE_STACKED
);
#endif
rd_cpu_thread_user = rrddim_add(st_cpu_thread, "user", NULL, 1, 1000, RRD_ALGORITHM_INCREMENTAL);
rd_cpu_thread_system = rrddim_add(st_cpu_thread, "system", NULL, 1, 1000, RRD_ALGORITHM_INCREMENTAL);
}
else
rrdset_next(st_cpu_thread);
rrddim_set_by_pointer(st_cpu_thread, rd_cpu_thread_user, thread.ru_utime.tv_sec * 1000000ULL + thread.ru_utime.tv_usec);
rrddim_set_by_pointer(st_cpu_thread, rd_cpu_thread_system, thread.ru_stime.tv_sec * 1000000ULL + thread.ru_stime.tv_usec);
rrdset_done(st_cpu_thread);
}
// ----------------------------------------------------------------
{
static RRDSET *st_cpu = NULL;
static RRDDIM *rd_cpu_user = NULL,
*rd_cpu_system = NULL;
if (unlikely(!st_cpu)) {
st_cpu = rrdset_create_localhost(
"netdata"
, "server_cpu"
, NULL
, "netdata"
, NULL
, "NetData CPU usage"
, "milliseconds/s"
, "netdata"
, "stats"
, 130000
, localhost->rrd_update_every
, RRDSET_TYPE_STACKED
);
rd_cpu_user = rrddim_add(st_cpu, "user", NULL, 1, 1000, RRD_ALGORITHM_INCREMENTAL);
rd_cpu_system = rrddim_add(st_cpu, "system", NULL, 1, 1000, RRD_ALGORITHM_INCREMENTAL);
}
else
rrdset_next(st_cpu);
rrddim_set_by_pointer(st_cpu, rd_cpu_user, me.ru_utime.tv_sec * 1000000ULL + me.ru_utime.tv_usec);
rrddim_set_by_pointer(st_cpu, rd_cpu_system, me.ru_stime.tv_sec * 1000000ULL + me.ru_stime.tv_usec);
rrdset_done(st_cpu);
}
// ----------------------------------------------------------------
{
static RRDSET *st_clients = NULL;
static RRDDIM *rd_clients = NULL;
if (unlikely(!st_clients)) {
st_clients = rrdset_create_localhost(
"netdata"
, "clients"
, NULL
, "netdata"
, NULL
, "NetData Web Clients"
, "connected clients"
, "netdata"
, "stats"
, 130200
, localhost->rrd_update_every
, RRDSET_TYPE_LINE
);
rd_clients = rrddim_add(st_clients, "clients", NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE);
}
else
rrdset_next(st_clients);
rrddim_set_by_pointer(st_clients, rd_clients, gs.connected_clients);
rrdset_done(st_clients);
}
// ----------------------------------------------------------------
{
static RRDSET *st_reqs = NULL;
static RRDDIM *rd_requests = NULL;
if (unlikely(!st_reqs)) {
st_reqs = rrdset_create_localhost(
"netdata"
, "requests"
, NULL
, "netdata"
, NULL
, "NetData Web Requests"
, "requests/s"
, "netdata"
, "stats"
, 130300
, localhost->rrd_update_every
, RRDSET_TYPE_LINE
);
rd_requests = rrddim_add(st_reqs, "requests", NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL);
}
else
rrdset_next(st_reqs);
rrddim_set_by_pointer(st_reqs, rd_requests, (collected_number) gs.web_requests);
rrdset_done(st_reqs);
}
// ----------------------------------------------------------------
{
static RRDSET *st_bytes = NULL;
static RRDDIM *rd_in = NULL,
*rd_out = NULL;
if (unlikely(!st_bytes)) {
st_bytes = rrdset_create_localhost(
"netdata"
, "net"
, NULL
, "netdata"
, NULL
, "NetData Network Traffic"
, "kilobits/s"
, "netdata"
, "stats"
, 130000
, localhost->rrd_update_every
, RRDSET_TYPE_AREA
);
rd_in = rrddim_add(st_bytes, "in", NULL, 8, BITS_IN_A_KILOBIT, RRD_ALGORITHM_INCREMENTAL);
rd_out = rrddim_add(st_bytes, "out", NULL, -8, BITS_IN_A_KILOBIT, RRD_ALGORITHM_INCREMENTAL);
}
else
rrdset_next(st_bytes);
rrddim_set_by_pointer(st_bytes, rd_in, (collected_number) gs.bytes_received);
rrddim_set_by_pointer(st_bytes, rd_out, (collected_number) gs.bytes_sent);
rrdset_done(st_bytes);
}
// ----------------------------------------------------------------
{
static RRDSET *st_duration = NULL;
static RRDDIM *rd_average = NULL,
*rd_max = NULL;
if (unlikely(!st_duration)) {
st_duration = rrdset_create_localhost(
"netdata"
, "response_time"
, NULL
, "netdata"
, NULL
, "NetData API Response Time"
, "ms/request"
, "netdata"
, "stats"
, 130400
, localhost->rrd_update_every
, RRDSET_TYPE_LINE
);
rd_average = rrddim_add(st_duration, "average", NULL, 1, 1000, RRD_ALGORITHM_ABSOLUTE);
rd_max = rrddim_add(st_duration, "max", NULL, 1, 1000, RRD_ALGORITHM_ABSOLUTE);
}
else
rrdset_next(st_duration);
uint64_t gweb_usec = gs.web_usec;
uint64_t gweb_requests = gs.web_requests;
uint64_t web_usec = (gweb_usec >= old_web_usec) ? gweb_usec - old_web_usec : 0;
uint64_t web_requests = (gweb_requests >= old_web_requests) ? gweb_requests - old_web_requests : 0;
old_web_usec = gweb_usec;
old_web_requests = gweb_requests;
if (web_requests)
average_response_time = (collected_number) (web_usec / web_requests);
if (unlikely(average_response_time != -1))
rrddim_set_by_pointer(st_duration, rd_average, average_response_time);
else
rrddim_set_by_pointer(st_duration, rd_average, 0);
rrddim_set_by_pointer(st_duration, rd_max, ((gs.web_usec_max)?(collected_number)gs.web_usec_max:average_response_time));
rrdset_done(st_duration);
}
// ----------------------------------------------------------------
{
static RRDSET *st_compression = NULL;
static RRDDIM *rd_savings = NULL;
if (unlikely(!st_compression)) {
st_compression = rrdset_create_localhost(
"netdata"
, "compression_ratio"
, NULL
, "netdata"
, NULL
, "NetData API Responses Compression Savings Ratio"
, "percentage"
, "netdata"
, "stats"
, 130500
, localhost->rrd_update_every
, RRDSET_TYPE_LINE
);
rd_savings = rrddim_add(st_compression, "savings", NULL, 1, 1000, RRD_ALGORITHM_ABSOLUTE);
}
else
rrdset_next(st_compression);
// since we don't lock here to read the global statistics
// read the smaller value first
unsigned long long gcompressed_content_size = gs.compressed_content_size;
unsigned long long gcontent_size = gs.content_size;
unsigned long long compressed_content_size = gcompressed_content_size - old_compressed_content_size;
unsigned long long content_size = gcontent_size - old_content_size;
old_compressed_content_size = gcompressed_content_size;
old_content_size = gcontent_size;
if (content_size && content_size >= compressed_content_size)
compression_ratio = ((content_size - compressed_content_size) * 100 * 1000) / content_size;
if (compression_ratio != -1)
rrddim_set_by_pointer(st_compression, rd_savings, compression_ratio);
rrdset_done(st_compression);
}
}
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