mirror of
https://github.com/prometheus/node_exporter.git
synced 2024-09-20 08:07:31 -07:00
0550ab3f04
Adds a count for TCP packets received out of orders. This can be an indication that there is packet loss on the way packets travel towards this server. In that case, the sender will retransmit (and we can already monitor the Tcp_RetransSegs there), but we have no way to monitor the packet loss on the receiver side. When a packet is received and the receiver detects previous one missing, it will increase the TCPOFOQueue counter and reply with selective ACK to the sender, both possible indications of packet loss. Confirmation of packet loss can be achieved by taking packet captures, ignoring wireshark analysis, and carefully looking at data being retransmitted based on the TCP seq. Just like RetransSegs, TCPOFOQueue should be interesting for any deployment as a mean to detect packet loss, so here suggesting adding it to the default list. Signed-off-by: François Rigault <frigo@amadeus.com> Co-authored-by: François Rigault <frigo@amadeus.com> |
||
|---|---|---|
| .. | ||
| 1 | ||
| 10 | ||
| 11 | ||
| net | ||
| pressure | ||
| spl/kstat/zfs | ||
| sys | ||
| buddyinfo | ||
| cgroups | ||
| cpuinfo | ||
| diskstats | ||
| drbd | ||
| interrupts | ||
| interrupts_aarch64 | ||
| loadavg | ||
| mdstat | ||
| meminfo | ||
| schedstat | ||
| self | ||
| slabinfo | ||
| softirqs | ||
| stat | ||
| vmstat | ||
| zoneinfo | ||