diff options
Diffstat (limited to 'src/proc_loadavg.c')
| -rw-r--r-- | src/proc_loadavg.c | 85 |
1 files changed, 48 insertions, 37 deletions
diff --git a/src/proc_loadavg.c b/src/proc_loadavg.c index 44ea7019..4326ffb7 100644 --- a/src/proc_loadavg.c +++ b/src/proc_loadavg.c @@ -3,30 +3,35 @@ // linux calculates this once every 5 seconds #define MIN_LOADAVG_UPDATE_EVERY 5 -int do_proc_loadavg(int update_every, unsigned long long dt) { +int do_proc_loadavg(int update_every, usec_t dt) { static procfile *ff = NULL; static int do_loadavg = -1, do_all_processes = -1; + static usec_t last_loadavg_usec = 0; + static RRDSET *load_chart = NULL, *processes_chart = NULL; - if(dt) {}; - - if(!ff) { + if(unlikely(!ff)) { char filename[FILENAME_MAX + 1]; snprintfz(filename, FILENAME_MAX, "%s%s", global_host_prefix, "/proc/loadavg"); + ff = procfile_open(config_get("plugin:proc:/proc/loadavg", "filename to monitor", filename), " \t,:|/", PROCFILE_FLAG_DEFAULT); + if(unlikely(!ff)) + return 1; } - if(!ff) return 1; ff = procfile_readall(ff); - if(!ff) return 0; // we return 0, so that we will retry to open it next time + if(unlikely(!ff)) + return 0; // we return 0, so that we will retry to open it next time - if(do_loadavg == -1) do_loadavg = config_get_boolean("plugin:proc:/proc/loadavg", "enable load average", 1); - if(do_all_processes == -1) do_all_processes = config_get_boolean("plugin:proc:/proc/loadavg", "enable total processes", 1); + if(unlikely(do_loadavg == -1)) { + do_loadavg = config_get_boolean("plugin:proc:/proc/loadavg", "enable load average", 1); + do_all_processes = config_get_boolean("plugin:proc:/proc/loadavg", "enable total processes", 1); + } - if(procfile_lines(ff) < 1) { + if(unlikely(procfile_lines(ff) < 1)) { error("/proc/loadavg has no lines."); return 1; } - if(procfile_linewords(ff, 0) < 6) { + if(unlikely(procfile_linewords(ff, 0) < 6)) { error("/proc/loadavg has less than 6 words in it."); return 1; } @@ -35,45 +40,51 @@ int do_proc_loadavg(int update_every, unsigned long long dt) { double load5 = strtod(procfile_lineword(ff, 0, 1), NULL); double load15 = strtod(procfile_lineword(ff, 0, 2), NULL); - //unsigned long long running_processes = strtoull(procfile_lineword(ff, 0, 3), NULL, 10); - unsigned long long active_processes = strtoull(procfile_lineword(ff, 0, 4), NULL, 10); - //unsigned long long next_pid = strtoull(procfile_lineword(ff, 0, 5), NULL, 10); + //unsigned long long running_processes = str2ull(procfile_lineword(ff, 0, 3)); + unsigned long long active_processes = str2ull(procfile_lineword(ff, 0, 4)); + //unsigned long long next_pid = str2ull(procfile_lineword(ff, 0, 5)); - RRDSET *st; - // -------------------------------------------------------------------- - if(do_loadavg) { - st = rrdset_find_byname("system.load"); - if(!st) { - st = rrdset_create("system", "load", NULL, "load", NULL, "System Load Average", "load", 100, (update_every < MIN_LOADAVG_UPDATE_EVERY)?MIN_LOADAVG_UPDATE_EVERY:update_every, RRDSET_TYPE_LINE); - - rrddim_add(st, "load1", NULL, 1, 1000, RRDDIM_ABSOLUTE); - rrddim_add(st, "load5", NULL, 1, 1000, RRDDIM_ABSOLUTE); - rrddim_add(st, "load15", NULL, 1, 1000, RRDDIM_ABSOLUTE); + if(last_loadavg_usec <= dt) { + if(likely(do_loadavg)) { + if(unlikely(!load_chart)) { + load_chart = rrdset_find_byname("system.load"); + if(unlikely(!load_chart)) { + load_chart = rrdset_create("system", "load", NULL, "load", NULL, "System Load Average", "load", 100, (update_every < MIN_LOADAVG_UPDATE_EVERY) ? MIN_LOADAVG_UPDATE_EVERY : update_every, RRDSET_TYPE_LINE); + rrddim_add(load_chart, "load1", NULL, 1, 1000, RRDDIM_ABSOLUTE); + rrddim_add(load_chart, "load5", NULL, 1, 1000, RRDDIM_ABSOLUTE); + rrddim_add(load_chart, "load15", NULL, 1, 1000, RRDDIM_ABSOLUTE); + } + } + else + rrdset_next(load_chart); + + rrddim_set(load_chart, "load1", (collected_number) (load1 * 1000)); + rrddim_set(load_chart, "load5", (collected_number) (load5 * 1000)); + rrddim_set(load_chart, "load15", (collected_number) (load15 * 1000)); + rrdset_done(load_chart); } - else rrdset_next(st); - rrddim_set(st, "load1", load1 * 1000); - rrddim_set(st, "load5", load5 * 1000); - rrddim_set(st, "load15", load15 * 1000); - rrdset_done(st); + last_loadavg_usec = load_chart->update_every * USEC_PER_SEC; } + else last_loadavg_usec -= dt; // -------------------------------------------------------------------- - if(do_all_processes) { - st = rrdset_find_byname("system.active_processes"); - if(!st) { - st = rrdset_create("system", "active_processes", NULL, "processes", NULL, "System Active Processes", "processes", 750, update_every, RRDSET_TYPE_LINE); - - rrddim_add(st, "active", NULL, 1, 1, RRDDIM_ABSOLUTE); + if(likely(do_all_processes)) { + if(unlikely(!processes_chart)) { + processes_chart = rrdset_find_byname("system.active_processes"); + if(unlikely(!processes_chart)) { + processes_chart = rrdset_create("system", "active_processes", NULL, "processes", NULL, "System Active Processes", "processes", 750, update_every, RRDSET_TYPE_LINE); + rrddim_add(processes_chart, "active", NULL, 1, 1, RRDDIM_ABSOLUTE); + } } - else rrdset_next(st); + else rrdset_next(processes_chart); - rrddim_set(st, "active", active_processes); - rrdset_done(st); + rrddim_set(processes_chart, "active", active_processes); + rrdset_done(processes_chart); } return 0; |