diff options
Diffstat (limited to 'src/proc_net_netstat.c')
| -rw-r--r-- | src/proc_net_netstat.c | 76 |
1 files changed, 74 insertions, 2 deletions
diff --git a/src/proc_net_netstat.c b/src/proc_net_netstat.c index e01b81d2..dd070e4c 100644 --- a/src/proc_net_netstat.c +++ b/src/proc_net_netstat.c @@ -22,7 +22,9 @@ int do_proc_net_netstat(int update_every, usec_t dt) { (void)dt; static int do_bandwidth = -1, do_inerrors = -1, do_mcast = -1, do_bcast = -1, do_mcast_p = -1, do_bcast_p = -1, do_ecn = -1, \ - do_tcpext_reorder = -1, do_tcpext_syscookies = -1, do_tcpext_ofo = -1, do_tcpext_connaborts = -1, do_tcpext_memory = -1; + do_tcpext_reorder = -1, do_tcpext_syscookies = -1, do_tcpext_ofo = -1, do_tcpext_connaborts = -1, do_tcpext_memory = -1, + do_tcpext_listen = -1; + static uint32_t hash_ipext = 0, hash_tcpext = 0; static procfile *ff = NULL; @@ -93,6 +95,10 @@ int do_proc_net_netstat(int update_every, usec_t dt) { static unsigned long long tcpext_TCPAbortOnLinger = 0; // connections aborted after user close in linger timeout static unsigned long long tcpext_TCPAbortFailed = 0; // times unable to send RST due to no memory + // https://perfchron.com/2015/12/26/investigating-linux-network-issues-with-netstat-and-nstat/ + static unsigned long long tcpext_ListenOverflows = 0; // times the listen queue of a socket overflowed + static unsigned long long tcpext_ListenDrops = 0; // SYNs to LISTEN sockets ignored + // IPv4 TCP memory pressures static unsigned long long tcpext_TCPMemoryPressures = 0; @@ -116,6 +122,7 @@ int do_proc_net_netstat(int update_every, usec_t dt) { do_tcpext_ofo = config_get_boolean_ondemand("plugin:proc:/proc/net/netstat", "TCP out-of-order queue", CONFIG_BOOLEAN_AUTO); do_tcpext_connaborts = config_get_boolean_ondemand("plugin:proc:/proc/net/netstat", "TCP connection aborts", CONFIG_BOOLEAN_AUTO); do_tcpext_memory = config_get_boolean_ondemand("plugin:proc:/proc/net/netstat", "TCP memory pressures", CONFIG_BOOLEAN_AUTO); + do_tcpext_listen = config_get_boolean_ondemand("plugin:proc:/proc/net/netstat", "TCP listen issues", CONFIG_BOOLEAN_AUTO); arl_ipext = arl_create("netstat/ipext", NULL, 60); arl_tcpext = arl_create("netstat/tcpext", NULL, 60); @@ -197,6 +204,11 @@ int do_proc_net_netstat(int update_every, usec_t dt) { arl_expect(arl_tcpext, "TCPMemoryPressures", &tcpext_TCPMemoryPressures); } + if(do_tcpext_listen != CONFIG_BOOLEAN_NO) { + arl_expect(arl_tcpext, "ListenOverflows", &tcpext_ListenOverflows); + arl_expect(arl_tcpext, "ListenDrops", &tcpext_ListenDrops); + } + // shared metrics arl_expect(arl_tcpext, "TCPSynRetrans", &tcpext_TCPSynRetrans); } @@ -248,7 +260,9 @@ int do_proc_net_netstat(int update_every, usec_t dt) { , NULL , "IPv4 Bandwidth" , "kilobits/s" - , 500 + , "proc" + , "net/netstat" + , 501 , update_every , RRDSET_TYPE_AREA ); @@ -281,6 +295,8 @@ int do_proc_net_netstat(int update_every, usec_t dt) { , NULL , "IPv4 Input Errors" , "packets/s" + , "proc" + , "net/netstat" , 4000 , update_every , RRDSET_TYPE_LINE @@ -318,6 +334,8 @@ int do_proc_net_netstat(int update_every, usec_t dt) { , NULL , "IPv4 Multicast Bandwidth" , "kilobits/s" + , "proc" + , "net/netstat" , 9000 , update_every , RRDSET_TYPE_AREA @@ -354,6 +372,8 @@ int do_proc_net_netstat(int update_every, usec_t dt) { , NULL , "IPv4 Broadcast Bandwidth" , "kilobits/s" + , "proc" + , "net/netstat" , 8000 , update_every , RRDSET_TYPE_AREA @@ -390,6 +410,8 @@ int do_proc_net_netstat(int update_every, usec_t dt) { , NULL , "IPv4 Multicast Packets" , "packets/s" + , "proc" + , "net/netstat" , 8600 , update_every , RRDSET_TYPE_LINE @@ -425,6 +447,8 @@ int do_proc_net_netstat(int update_every, usec_t dt) { , NULL , "IPv4 Broadcast Packets" , "packets/s" + , "proc" + , "net/netstat" , 8500 , update_every , RRDSET_TYPE_LINE @@ -461,6 +485,8 @@ int do_proc_net_netstat(int update_every, usec_t dt) { , NULL , "IPv4 ECN Statistics" , "packets/s" + , "proc" + , "net/netstat" , 8700 , update_every , RRDSET_TYPE_LINE @@ -511,6 +537,8 @@ int do_proc_net_netstat(int update_every, usec_t dt) { , NULL , "TCP Memory Pressures" , "events/s" + , "proc" + , "net/netstat" , 3000 , update_every , RRDSET_TYPE_LINE @@ -543,6 +571,8 @@ int do_proc_net_netstat(int update_every, usec_t dt) { , NULL , "TCP Connection Aborts" , "connections/s" + , "proc" + , "net/netstat" , 3010 , update_every , RRDSET_TYPE_LINE @@ -585,6 +615,8 @@ int do_proc_net_netstat(int update_every, usec_t dt) { , NULL , "TCP Reordered Packets by Detection Method" , "packets/s" + , "proc" + , "net/netstat" , 3020 , update_every , RRDSET_TYPE_LINE @@ -624,6 +656,8 @@ int do_proc_net_netstat(int update_every, usec_t dt) { , NULL , "TCP Out-Of-Order Queue" , "packets/s" + , "proc" + , "net/netstat" , 3050 , update_every , RRDSET_TYPE_LINE @@ -663,6 +697,8 @@ int do_proc_net_netstat(int update_every, usec_t dt) { , NULL , "TCP SYN Cookies" , "packets/s" + , "proc" + , "net/netstat" , 3100 , update_every , RRDSET_TYPE_LINE @@ -682,6 +718,42 @@ int do_proc_net_netstat(int update_every, usec_t dt) { rrdset_done(st_syncookies); } + // -------------------------------------------------------------------- + + if(do_tcpext_listen == CONFIG_BOOLEAN_YES || (do_tcpext_listen == CONFIG_BOOLEAN_AUTO && (tcpext_ListenOverflows || tcpext_ListenDrops))) { + do_tcpext_listen = CONFIG_BOOLEAN_YES; + + static RRDSET *st_listen = NULL; + static RRDDIM *rd_overflows = NULL, *rd_drops = NULL; + + if(unlikely(!st_listen)) { + + st_listen = rrdset_create_localhost( + "ipv4" + , "tcplistenissues" + , NULL + , "tcp" + , NULL + , "TCP Listen Socket Issues" + , "packets/s" + , "proc" + , "net/netstat" + , 3015 + , update_every + , RRDSET_TYPE_LINE + ); + + rd_overflows = rrddim_add(st_listen, "ListenOverflows", "overflows", 1, 1, RRD_ALGORITHM_INCREMENTAL); + rd_drops = rrddim_add(st_listen, "ListenDrops", "drops", 1, 1, RRD_ALGORITHM_INCREMENTAL); + } + else + rrdset_next(st_listen); + + rrddim_set_by_pointer(st_listen, rd_overflows, tcpext_ListenOverflows); + rrddim_set_by_pointer(st_listen, rd_drops, tcpext_ListenDrops); + + rrdset_done(st_listen); + } } } |