[username@hostname tmp]$ ps -e|grep zabbix_agentd 30959 ? 00:00:00 zabbix_agentd 30960 ? 00:00:10 zabbix_agentd 30961 ? 00:00:00 zabbix_agentd 30962 ? 00:00:00 zabbix_agentd 30965 ? 00:00:00 zabbix_agentd 30966 ? 00:00:51 zabbix_agentd [username@hostname tmp]$ strace -tt -o /tmp/tra.log -p 30959 -p 30960 -p 30961 -p 30962 -p 30965 -p 30966 Process 30959 attached - interrupt to quit Process 30960 attached - interrupt to quit Process 30961 attached - interrupt to quit Process 30962 attached - interrupt to quit Process 30965 attached - interrupt to quit Process 30966 attached - interrupt to quit ^CProcess 30959 detached Process 30960 detached Process 30961 detached Process 30962 detached Process 30965 detached Process 30966 detached [username@hostname tmp]$ 30966 14:01:10.379050 gettimeofday({1394082070, 379078}, NULL) = 0 30966 14:01:10.379145 gettimeofday({1394082070, 379173}, NULL) = 0 30966 14:01:10.379240 gettimeofday({1394082070, 379268}, NULL) = 0 30966 14:01:10.379336 gettimeofday({1394082070, 379382}, NULL) = 0 30966 14:01:10.379466 open("/proc/net/tcp", O_RDONLY) = 5 30966 14:01:10.379627 read(5, " sl local_address rem_address "..., 65536) = 4050 30966 14:01:10.379831 close(5) = 0 30966 14:01:10.379946 open("/proc/net/tcp6", O_RDONLY) = 5 30966 14:01:10.380070 read(5, " sl local_address "..., 65536) = 1205 30966 14:01:10.380769 close(5) = 0 30966 14:01:10.380883 gettimeofday({1394082070, 380914}, NULL) = 0 30966 14:01:10.380989 clock_gettime(CLOCK_REALTIME, {1394082070, 381019876}) = 0 30966 14:01:10.381087 gettimeofday({1394082070, 381116}, NULL) = 0 30966 14:01:10.381184 gettimeofday({1394082070, 381212}, NULL) = 0 30966 14:01:10.381279 gettimeofday({1394082070, 381307}, NULL) = 0