3 int do_proc_sys_kernel_random_entropy_avail(int update_every, usec_t dt) {
6 static procfile *ff = NULL;
9 char filename[FILENAME_MAX + 1];
10 snprintfz(filename, FILENAME_MAX, "%s%s", netdata_configured_host_prefix, "/proc/sys/kernel/random/entropy_avail");
11 ff = procfile_open(config_get("plugin:proc:/proc/sys/kernel/random/entropy_avail", "filename to monitor", filename), "", PROCFILE_FLAG_DEFAULT);
12 if(unlikely(!ff)) return 1;
15 ff = procfile_readall(ff);
16 if(unlikely(!ff)) return 0; // we return 0, so that we will retry to open it next time
18 unsigned long long entropy = str2ull(procfile_lineword(ff, 0, 0));
20 RRDSET *st = rrdset_find_bytype_localhost("system", "entropy");
22 st = rrdset_create_localhost("system", "entropy", NULL, "entropy", NULL, "Available Entropy", "entropy", 1000
23 , update_every, RRDSET_TYPE_LINE);
24 rrddim_add(st, "entropy", NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE);
28 rrddim_set(st, "entropy", entropy);