sstrncpy(vl.plugin, "xencpu", sizeof(vl.plugin));
sstrncpy(vl.type, "percent", sizeof(vl.type));
sstrncpy(vl.type_instance, "load", sizeof(vl.type_instance));
if (cpu_num >= 0) {
sstrncpy(vl.plugin, "xencpu", sizeof(vl.plugin));
sstrncpy(vl.type, "percent", sizeof(vl.type));
sstrncpy(vl.type_instance, "load", sizeof(vl.type_instance));
if (cpu_num >= 0) {