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// SPDX-License-Identifier: GPL-3.0-or-later
#include "plugin_proc.h"
static struct proc_module {
const char *name;
const char *dim;
int enabled;
int (*func)(int update_every, usec_t dt);
usec_t duration;
RRDDIM *rd;
} proc_modules[] = {
// system metrics
{ .name = "/proc/stat", .dim = "stat", .func = do_proc_stat },
{ .name = "/proc/uptime", .dim = "uptime", .func = do_proc_uptime },
{ .name = "/proc/loadavg", .dim = "loadavg", .func = do_proc_loadavg },
{ .name = "/proc/sys/kernel/random/entropy_avail", .dim = "entropy", .func = do_proc_sys_kernel_random_entropy_avail },
// CPU metrics
{ .name = "/proc/interrupts", .dim = "interrupts", .func = do_proc_interrupts },
{ .name = "/proc/softirqs", .dim = "softirqs", .func = do_proc_softirqs },
// memory metrics
{ .name = "/proc/vmstat", .dim = "vmstat", .func = do_proc_vmstat },
{ .name = "/proc/meminfo", .dim = "meminfo", .func = do_proc_meminfo },
{ .name = "/sys/kernel/mm/ksm", .dim = "ksm", .func = do_sys_kernel_mm_ksm },
{ .name = "/sys/block/zram", .dim = "zram", .func = do_sys_block_zram },
{ .name = "/sys/devices/system/edac/mc", .dim = "ecc", .func = do_proc_sys_devices_system_edac_mc },
{ .name = "/sys/devices/system/node", .dim = "numa", .func = do_proc_sys_devices_system_node },
{ .name = "/proc/pagetypeinfo", .dim = "pagetypeinfo", .func = do_proc_pagetypeinfo },
// network metrics
{ .name = "/proc/net/dev", .dim = "netdev", .func = do_proc_net_dev },
{ .name = "/proc/net/sockstat", .dim = "sockstat", .func = do_proc_net_sockstat },
{ .name = "/proc/net/sockstat6", .dim = "sockstat6", .func = do_proc_net_sockstat6 },
{ .name = "/proc/net/netstat", .dim = "netstat", .func = do_proc_net_netstat }, // this has to be before /proc/net/snmp, because there is a shared metric
{ .name = "/proc/net/snmp", .dim = "snmp", .func = do_proc_net_snmp },
{ .name = "/proc/net/snmp6", .dim = "snmp6", .func = do_proc_net_snmp6 },
{ .name = "/proc/net/sctp/snmp", .dim = "sctp", .func = do_proc_net_sctp_snmp },
{ .name = "/proc/net/softnet_stat", .dim = "softnet", .func = do_proc_net_softnet_stat },
{ .name = "/proc/net/ip_vs/stats", .dim = "ipvs", .func = do_proc_net_ip_vs_stats },
// firewall metrics
{ .name = "/proc/net/stat/conntrack", .dim = "conntrack", .func = do_proc_net_stat_conntrack },
{ .name = "/proc/net/stat/synproxy", .dim = "synproxy", .func = do_proc_net_stat_synproxy },
// disk metrics
{ .name = "/proc/diskstats", .dim = "diskstats", .func = do_proc_diskstats },
{ .name = "/proc/mdstat", .dim = "mdstat", .func = do_proc_mdstat },
// NFS metrics
{ .name = "/proc/net/rpc/nfsd", .dim = "nfsd", .func = do_proc_net_rpc_nfsd },
{ .name = "/proc/net/rpc/nfs", .dim = "nfs", .func = do_proc_net_rpc_nfs },
// ZFS metrics
{ .name = "/proc/spl/kstat/zfs/arcstats", .dim = "zfs_arcstats", .func = do_proc_spl_kstat_zfs_arcstats },
// BTRFS metrics
{ .name = "/sys/fs/btrfs", .dim = "btrfs", .func = do_sys_fs_btrfs },
// IPC metrics
{ .name = "ipc", .dim = "ipc", .func = do_ipc },
// linux power supply metrics
{ .name = "/sys/class/power_supply", .dim = "power_supply", .func = do_sys_class_power_supply },
// the terminator of this array
{ .name = NULL, .dim = NULL, .func = NULL }
};
static void proc_main_cleanup(void *ptr) {
struct netdata_static_thread *static_thread = (struct netdata_static_thread *)ptr;
static_thread->enabled = NETDATA_MAIN_THREAD_EXITING;
info("cleaning up...");
static_thread->enabled = NETDATA_MAIN_THREAD_EXITED;
}
void *proc_main(void *ptr) {
netdata_thread_cleanup_push(proc_main_cleanup, ptr);
int vdo_cpu_netdata = config_get_boolean("plugin:proc", "netdata server resources", CONFIG_BOOLEAN_YES);
config_get_boolean("plugin:proc", "/proc/pagetypeinfo", CONFIG_BOOLEAN_NO);
// check the enabled status for each module
int i;
for(i = 0 ; proc_modules[i].name ;i++) {
struct proc_module *pm = &proc_modules[i];
pm->enabled = config_get_boolean("plugin:proc", pm->name, CONFIG_BOOLEAN_YES);
pm->duration = 0ULL;
pm->rd = NULL;
}
usec_t step = localhost->rrd_update_every * USEC_PER_SEC;
heartbeat_t hb;
heartbeat_init(&hb);
size_t iterations = 0;
while(!netdata_exit) {
iterations++;
(void)iterations;
usec_t hb_dt = heartbeat_next(&hb, step);
usec_t duration = 0ULL;
if(unlikely(netdata_exit)) break;
// BEGIN -- the job to be done
for(i = 0 ; proc_modules[i].name ;i++) {
struct proc_module *pm = &proc_modules[i];
if(unlikely(!pm->enabled)) continue;
debug(D_PROCNETDEV_LOOP, "PROC calling %s.", pm->name);
//#ifdef NETDATA_LOG_ALLOCATIONS
// if(pm->func == do_proc_interrupts)
// log_thread_memory_allocations = iterations;
//#endif
pm->enabled = !pm->func(localhost->rrd_update_every, hb_dt);
pm->duration = heartbeat_monotonic_dt_to_now_usec(&hb) - duration;
duration += pm->duration;
//#ifdef NETDATA_LOG_ALLOCATIONS
// if(pm->func == do_proc_interrupts)
// log_thread_memory_allocations = 0;
//#endif
if(unlikely(netdata_exit)) break;
}
// END -- the job is done
// --------------------------------------------------------------------
if(vdo_cpu_netdata) {
static RRDSET *st = NULL;
if(unlikely(!st)) {
st = rrdset_find_bytype_localhost("netdata", "plugin_proc_modules");
if(!st) {
st = rrdset_create_localhost(
"netdata"
, "plugin_proc_modules"
, NULL
, "proc"
, NULL
, "NetData Proc Plugin Modules Durations"
, "milliseconds/run"
, "netdata"
, "stats"
, 132001
, localhost->rrd_update_every
, RRDSET_TYPE_STACKED
);
for(i = 0 ; proc_modules[i].name ;i++) {
struct proc_module *pm = &proc_modules[i];
if(unlikely(!pm->enabled)) continue;
pm->rd = rrddim_add(st, pm->dim, NULL, 1, 1000, RRD_ALGORITHM_ABSOLUTE);
}
}
}
else rrdset_next(st);
for(i = 0 ; proc_modules[i].name ;i++) {
struct proc_module *pm = &proc_modules[i];
if(unlikely(!pm->enabled)) continue;
rrddim_set_by_pointer(st, pm->rd, pm->duration);
}
rrdset_done(st);
global_statistics_charts();
registry_statistics();
}
}
netdata_thread_cleanup_pop(1);
return NULL;
}
int get_numa_node_count(void)
{
static int numa_node_count = -1;
if (numa_node_count != -1)
return numa_node_count;
numa_node_count = 0;
char name[FILENAME_MAX + 1];
snprintfz(name, FILENAME_MAX, "%s%s", netdata_configured_host_prefix, "/sys/devices/system/node");
char *dirname = config_get("plugin:proc:/sys/devices/system/node", "directory to monitor", name);
DIR *dir = opendir(dirname);
if(dir) {
struct dirent *de = NULL;
while((de = readdir(dir))) {
if(de->d_type != DT_DIR)
continue;
if(strncmp(de->d_name, "node", 4) != 0)
continue;
if(!isdigit(de->d_name[4]))
continue;
numa_node_count++;
}
closedir(dir);
}
return numa_node_count;
}
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