src/plugin_proc.c

   1 #include <pthread.h>
   2 #include <sys/time.h>
   3 #include <sys/resource.h>
   4 #include <strings.h>
   5 #include <unistd.h>
   6
   7 #include "global_statistics.h"
   8 #include "common.h"
   9 #include "config.h"
  10 #include "log.h"
  11 #include "rrd.h"
  12 #include "plugin_proc.h"
  13
  14 void *proc_main(void *ptr)
  15 {
  16         if(ptr) { ; }
  17
  18         if(pthread_setcanceltype(PTHREAD_CANCEL_DEFERRED, NULL) != 0)
  19                 error("Cannot set pthread cancel type to DEFERRED.");
  20
  21         if(pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, NULL) != 0)
  22                 error("Cannot set pthread cancel state to ENABLE.");
  23
  24         struct rusage me, me_last;
  25         struct timeval last, now;
  26
  27         gettimeofday(&last, NULL);
  28         last.tv_sec -= update_every;
  29
  30         // disable (by default) various interface that are not needed
  31         config_get_boolean("plugin:proc:/proc/net/dev", "interface lo", 0);
  32         config_get_boolean("plugin:proc:/proc/net/dev", "interface fireqos_monitor", 0);
  33
  34         // when ZERO, attempt to do it
  35         int vdo_proc_net_dev                    = !config_get_boolean("plugin:proc", "/proc/net/dev", 1);
  36         int vdo_proc_diskstats                  = !config_get_boolean("plugin:proc", "/proc/diskstats", 1);
  37         int vdo_proc_net_snmp                   = !config_get_boolean("plugin:proc", "/proc/net/snmp", 1);
  38         int vdo_proc_net_netstat                = !config_get_boolean("plugin:proc", "/proc/net/netstat", 1);
  39         int vdo_proc_net_stat_conntrack = !config_get_boolean("plugin:proc", "/proc/net/stat/conntrack", 1);
  40         int vdo_proc_net_ip_vs_stats    = !config_get_boolean("plugin:proc", "/proc/net/ip_vs/stats", 1);
  41         int vdo_proc_stat                               = !config_get_boolean("plugin:proc", "/proc/stat", 1);
  42         int vdo_proc_meminfo                    = !config_get_boolean("plugin:proc", "/proc/meminfo", 1);
  43         int vdo_proc_vmstat                     = !config_get_boolean("plugin:proc", "/proc/vmstat", 1);
  44         int vdo_proc_net_rpc_nfsd               = !config_get_boolean("plugin:proc", "/proc/net/rpc/nfsd", 1);
  45         int vdo_cpu_netdata                     = !config_get_boolean("plugin:proc", "netdata server resources", 1);
  46
  47         RRD_STATS *stcpu = NULL, *stclients = NULL, *streqs = NULL, *stbytes = NULL;
  48
  49         gettimeofday(&last, NULL);
  50         getrusage(RUSAGE_SELF, &me_last);
  51
  52         unsigned long long usec = 0, susec = 0;
  53         for(;1;) {
  54
  55                 // BEGIN -- the job to be done
  56                 if(!vdo_proc_net_dev)                           vdo_proc_net_dev                        = do_proc_net_dev(update_every, usec+susec);
  57                 if(!vdo_proc_diskstats)                         vdo_proc_diskstats                      = do_proc_diskstats(update_every, usec+susec);
  58                 if(!vdo_proc_net_snmp)                          vdo_proc_net_snmp                       = do_proc_net_snmp(update_every, usec+susec);
  59                 if(!vdo_proc_net_netstat)                       vdo_proc_net_netstat            = do_proc_net_netstat(update_every, usec+susec);
  60                 if(!vdo_proc_net_stat_conntrack)        vdo_proc_net_stat_conntrack     = do_proc_net_stat_conntrack(update_every, usec+susec);
  61                 if(!vdo_proc_net_ip_vs_stats)           vdo_proc_net_ip_vs_stats        = do_proc_net_ip_vs_stats(update_every, usec+susec);
  62                 if(!vdo_proc_stat)                                      vdo_proc_stat                           = do_proc_stat(update_every, usec+susec);
  63                 if(!vdo_proc_meminfo)                           vdo_proc_meminfo                        = do_proc_meminfo(update_every, usec+susec);
  64                 if(!vdo_proc_vmstat)                            vdo_proc_vmstat                         = do_proc_vmstat(update_every, usec+susec);
  65                 if(!vdo_proc_net_rpc_nfsd)                      vdo_proc_net_rpc_nfsd           = do_proc_net_rpc_nfsd(update_every, usec+susec);
  66                 // END -- the job is done
  67
  68                 // find the time to sleep in order to wait exactly update_every seconds
  69                 gettimeofday(&now, NULL);
  70                 usec = usecdiff(&now, &last) - susec;
  71                 debug(D_PROCNETDEV_LOOP, "PROCNETDEV: last loop took %llu usec (worked for %llu, sleeped for %llu).", usec + susec, usec, susec);
  72
  73                 if(usec < (update_every * 1000000ULL / 2ULL)) susec = (update_every * 1000000ULL) - usec;
  74                 else susec = update_every * 1000000ULL / 2ULL;
  75
  76                 // --------------------------------------------------------------------
  77
  78                 if(!vdo_cpu_netdata && getrusage(RUSAGE_SELF, &me) == 0) {
  79
  80                         unsigned long long cpuuser = me.ru_utime.tv_sec * 1000000ULL + me.ru_utime.tv_usec;
  81                         unsigned long long cpusyst = me.ru_stime.tv_sec * 1000000ULL + me.ru_stime.tv_usec;
  82
  83                         if(!stcpu) stcpu = rrd_stats_find("netdata.server_cpu");
  84                         if(!stcpu) {
  85                                 stcpu = rrd_stats_create("netdata", "server_cpu", NULL, "netdata", "NetData CPU usage", "milliseconds/s", 9999, update_every, CHART_TYPE_STACKED);
  86
  87                                 rrd_stats_dimension_add(stcpu, "user",  NULL,  1, 1000 * update_every, RRD_DIMENSION_INCREMENTAL);
  88                                 rrd_stats_dimension_add(stcpu, "system", NULL, 1, 1000 * update_every, RRD_DIMENSION_INCREMENTAL);
  89                         }
  90                         else rrd_stats_next(stcpu);
  91
  92                         rrd_stats_dimension_set(stcpu, "user", cpuuser);
  93                         rrd_stats_dimension_set(stcpu, "system", cpusyst);
  94                         rrd_stats_done(stcpu);
  95
  96                         bcopy(&me, &me_last, sizeof(struct rusage));
  97
  98                         // ----------------------------------------------------------------
  99
 100                         if(!stclients) stclients = rrd_stats_find("netdata.clients");
 101                         if(!stclients) {
 102                                 stclients = rrd_stats_create("netdata", "clients", NULL, "netdata", "NetData Web Clients", "connected clients", 11000, update_every, CHART_TYPE_LINE);
 103
 104                                 rrd_stats_dimension_add(stclients, "clients",  NULL,  1, 1, RRD_DIMENSION_ABSOLUTE);
 105                         }
 106                         else rrd_stats_next(stclients);
 107
 108                         rrd_stats_dimension_set(stclients, "clients", global_statistics.connected_clients);
 109                         rrd_stats_done(stclients);
 110
 111                         // ----------------------------------------------------------------
 112
 113                         if(!streqs) streqs = rrd_stats_find("netdata.requests");
 114                         if(!streqs) {
 115                                 streqs = rrd_stats_create("netdata", "requests", NULL, "netdata", "NetData Web Requests", "requests/s", 12000, update_every, CHART_TYPE_LINE);
 116
 117                                 rrd_stats_dimension_add(streqs, "requests",  NULL,  1, 1 * update_every, RRD_DIMENSION_INCREMENTAL);
 118                         }
 119                         else rrd_stats_next(streqs);
 120
 121                         rrd_stats_dimension_set(streqs, "requests", global_statistics.web_requests);
 122                         rrd_stats_done(streqs);
 123
 124                         // ----------------------------------------------------------------
 125
 126                         if(!stbytes) stbytes = rrd_stats_find("netdata.net");
 127                         if(!stbytes) {
 128                                 stbytes = rrd_stats_create("netdata", "net", NULL, "netdata", "NetData Network Traffic", "kilobits/s", 13000, update_every, CHART_TYPE_AREA);
 129
 130                                 rrd_stats_dimension_add(stbytes, "in",  NULL,  8, 1024 * update_every, RRD_DIMENSION_INCREMENTAL);
 131                                 rrd_stats_dimension_add(stbytes, "out",  NULL,  -8, 1024 * update_every, RRD_DIMENSION_INCREMENTAL);
 132                         }
 133                         else rrd_stats_next(stbytes);
 134
 135                         rrd_stats_dimension_set(stbytes, "in", global_statistics.bytes_received);
 136                         rrd_stats_dimension_set(stbytes, "out", global_statistics.bytes_sent);
 137                         rrd_stats_done(stbytes);
 138                 }
 139
 140                 usleep(susec);
 141
 142                 // copy current to last
 143                 bcopy(&now, &last, sizeof(struct timeval));
 144         }
 145
 146         return NULL;
 147 }