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authorFederico Ceratto <federico.ceratto@gmail.com>2017-12-19 23:39:21 +0000
committerFederico Ceratto <federico.ceratto@gmail.com>2017-12-19 23:39:21 +0000
commit61aedf201c2c4bf0e5aa4db32e74f4d860b88593 (patch)
treebcf4f9a0cd8bc2daf38b2ff9f29bfcc1e5ed8968 /src/proc_net_netstat.c
parentNew upstream version 1.8.0+dfsg (diff)
downloadnetdata-61aedf201c2c4bf0e5aa4db32e74f4d860b88593.tar.xz
netdata-61aedf201c2c4bf0e5aa4db32e74f4d860b88593.zip
New upstream version 1.9.0+dfsgupstream/1.9.0+dfsg
Diffstat (limited to 'src/proc_net_netstat.c')
-rw-r--r--src/proc_net_netstat.c76
1 files changed, 74 insertions, 2 deletions
diff --git a/src/proc_net_netstat.c b/src/proc_net_netstat.c
index e01b81d28..dd070e4c3 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);
+ }
}
}