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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;
static RRDSET *stcpu = NULL, *stcpu_thread = NULL, *stclients = NULL, *streqs = NULL, *stbytes = NULL, *stduration = NULL,
*stcompression = NULL;
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);
#ifdef __FreeBSD__
if (!stcpu_thread) stcpu_thread = rrdset_find_localhost("netdata.plugin_freebsd_cpu");
if (!stcpu_thread) {
stcpu_thread = rrdset_create_localhost("netdata", "plugin_freebsd_cpu", NULL, "freebsd", NULL
, "NetData FreeBSD Plugin CPU usage", "milliseconds/s", 132000
, localhost->rrd_update_every, RRDSET_TYPE_STACKED);
#else
if (!stcpu_thread) stcpu_thread = rrdset_find_localhost("netdata.plugin_proc_cpu");
if (!stcpu_thread) {
stcpu_thread = rrdset_create_localhost("netdata", "plugin_proc_cpu", NULL, "proc", NULL
, "NetData Proc Plugin CPU usage", "milliseconds/s", 132000
, localhost->rrd_update_every, RRDSET_TYPE_STACKED);
#endif
rrddim_add(stcpu_thread, "user", NULL, 1, 1000, RRD_ALGORITHM_INCREMENTAL);
rrddim_add(stcpu_thread, "system", NULL, 1, 1000, RRD_ALGORITHM_INCREMENTAL);
} else rrdset_next(stcpu_thread);
rrddim_set(stcpu_thread, "user", thread.ru_utime.tv_sec * 1000000ULL + thread.ru_utime.tv_usec);
rrddim_set(stcpu_thread, "system", thread.ru_stime.tv_sec * 1000000ULL + thread.ru_stime.tv_usec);
rrdset_done(stcpu_thread);
// ----------------------------------------------------------------
if (!stcpu) stcpu = rrdset_find_localhost("netdata.server_cpu");
if (!stcpu) {
stcpu = rrdset_create_localhost("netdata", "server_cpu", NULL, "netdata", NULL, "NetData CPU usage"
, "milliseconds/s", 130000, localhost->rrd_update_every, RRDSET_TYPE_STACKED);
rrddim_add(stcpu, "user", NULL, 1, 1000, RRD_ALGORITHM_INCREMENTAL);
rrddim_add(stcpu, "system", NULL, 1, 1000, RRD_ALGORITHM_INCREMENTAL);
} else rrdset_next(stcpu);
rrddim_set(stcpu, "user", me.ru_utime.tv_sec * 1000000ULL + me.ru_utime.tv_usec);
rrddim_set(stcpu, "system", me.ru_stime.tv_sec * 1000000ULL + me.ru_stime.tv_usec);
rrdset_done(stcpu);
// ----------------------------------------------------------------
if (!stclients) stclients = rrdset_find_localhost("netdata.clients");
if (!stclients) {
stclients = rrdset_create_localhost("netdata", "clients", NULL, "netdata", NULL, "NetData Web Clients"
, "connected clients", 130200, localhost->rrd_update_every, RRDSET_TYPE_LINE);
rrddim_add(stclients, "clients", NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE);
} else rrdset_next(stclients);
rrddim_set(stclients, "clients", gs.connected_clients);
rrdset_done(stclients);
// ----------------------------------------------------------------
if (!streqs) streqs = rrdset_find_localhost("netdata.requests");
if (!streqs) {
streqs = rrdset_create_localhost("netdata", "requests", NULL, "netdata", NULL, "NetData Web Requests"
, "requests/s", 130300, localhost->rrd_update_every, RRDSET_TYPE_LINE);
rrddim_add(streqs, "requests", NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL);
} else rrdset_next(streqs);
rrddim_set(streqs, "requests", (collected_number) gs.web_requests);
rrdset_done(streqs);
// ----------------------------------------------------------------
if (!stbytes) stbytes = rrdset_find_localhost("netdata.net");
if (!stbytes) {
stbytes = rrdset_create_localhost("netdata", "net", NULL, "netdata", NULL, "NetData Network Traffic"
, "kilobits/s", 130000, localhost->rrd_update_every, RRDSET_TYPE_AREA);
rrddim_add(stbytes, "in", NULL, 8, 1024, RRD_ALGORITHM_INCREMENTAL);
rrddim_add(stbytes, "out", NULL, -8, 1024, RRD_ALGORITHM_INCREMENTAL);
} else rrdset_next(stbytes);
rrddim_set(stbytes, "in", (collected_number) gs.bytes_received);
rrddim_set(stbytes, "out", (collected_number) gs.bytes_sent);
rrdset_done(stbytes);
// ----------------------------------------------------------------
if (!stduration) stduration = rrdset_find_localhost("netdata.response_time");
if (!stduration) {
stduration = rrdset_create_localhost("netdata", "response_time", NULL, "netdata", NULL
, "NetData API Response Time", "ms/request", 130400, localhost->rrd_update_every
, RRDSET_TYPE_LINE);
rrddim_add(stduration, "average", NULL, 1, 1000, RRD_ALGORITHM_ABSOLUTE);
rrddim_add(stduration, "max", NULL, 1, 1000, RRD_ALGORITHM_ABSOLUTE);
} else rrdset_next(stduration);
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(stduration, "average", average_response_time);
else
rrddim_set(stduration, "average", 0);
rrddim_set(stduration, "max", ((gs.web_usec_max)?(collected_number)gs.web_usec_max:average_response_time));
rrdset_done(stduration);
// ----------------------------------------------------------------
if (!stcompression) stcompression = rrdset_find_localhost("netdata.compression_ratio");
if (!stcompression) {
stcompression = rrdset_create_localhost("netdata", "compression_ratio", NULL, "netdata", NULL
, "NetData API Responses Compression Savings Ratio", "percentage"
, 130500, localhost->rrd_update_every, RRDSET_TYPE_LINE);
rrddim_add(stcompression, "savings", NULL, 1, 1000, RRD_ALGORITHM_ABSOLUTE);
} else rrdset_next(stcompression);
// 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(stcompression, "savings", compression_ratio);
rrdset_done(stcompression);
}
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