meaning of rx_queue_*_csum_err and rx_fifo_errors
rx_fifo_errors
= Total number of rx_queue_*_drops
rx_queue_*_drops
= Number of dropped packets per queue
Sounds like the RX interrupts aren't allocating buffers fast enough, resulting in the adapter dropping packets.
Check and increase the ring buffer.
# ethtool -g eth0
Ring parameters for eth0:
Pre-set maximums:
RX: 4096
RX Mini: 0
RX Jumbo: 0
TX: 4096
Current hardware settings:
RX: 256
RX Mini: 0
RX Jumbo: 0
TX: 256
You can set your "Current Hardware Settings
" for "RX
" up to the limit shown in the "Pre-set maximums
"
# ethtool -G eth0 rx 4096
NOTE: This setting will not survive a reboot. You may want to use rc.local
(or something similar)
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Tommaso Barbugli
Updated on September 18, 2022Comments
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Tommaso Barbugli almost 2 years
I am trying to debug some networking issue with one server. I monitor this machine with multiple monitors and I see that at times ping error rate jumps to 5/10%
I am running on ubuntu and I see that the output of ethtool -S eth0 shows positive values for rx_queue_*_csum_errboth rx_fifo_errors (a few thousands).
What do this counters actually track, are there any very well known causes for them to be non 0?
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Tommaso Barbugli over 9 yearsis the interface going to go down/up while changing this setting? i would run this on a production server so that would be quite inconvenient...
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Signal15 over 9 years@TommasoBarbugli A Production server? I doubt the NIC will go down. But test it in Development/Non-Prod first should be done for anything you do.