I we are running voice application which stream UDP (RTP) packets for voice, I am investigation some strange issue where my ifconfig ens4 | grep error counter going up specifically overrun
If you see UDP send buffer error that counter is getting increase periodically, does that means my TX buffer is getting full?
[root@voice-01 ~]# netstat -suna ... Udp: 564240050621 packets received 600156354 packets to unknown port received. 3095742 packet receive errors 621737694201 packets sent 0 receive buffer errors 1475161 send buffer errors InCsumErrors: 913878 ... Interface overrun counter
[root@voice-01 ~]# ifconfig ens4 | grep -i error RX errors 15147252 dropped 0 overruns 15147252 frame 0 TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 overrun directly involve with high speed RX data where kernel can't process hard enough, i have increase udp buffer size also but still time to time overrun counter getting increased.
sysctl -w net.core.rmem_max=26214400 sysctl -w net.core.rmem_default=26214400 sysctl -w net.core_wrmem_default=26214400 sysctl -w net.core_wmem_default=26214400
ethtool stats
[root@voice-01 ~]# ethtool -S ens4 | grep rx_dis [0]: rx_discards: 1764406 [1]: rx_discards: 1655431 [2]: rx_discards: 1418942 [3]: rx_discards: 1880233 [4]: rx_discards: 1950109 [5]: rx_discards: 2227701 [6]: rx_discards: 1095657 [7]: rx_discards: 3154773 rx_discards: 15147252 I have exact similar hardware voice-02 box which is also handling same amount of traffic but it has almost zero error
I have NIC is Broadcom Limited NetXtreme II BCM57810 10 Gigabit Ethernet
what other option i should try or understand what is wrong?
