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'ethtool -S <interface>' の出力結果の 'rx_fifo_errors' パラメータに対照をなしてパケットがドロップされる

Solution Verified - Updated -

Issue

ethtool -S <interface> の出力結果は fifo エラーを受けたことを示しています。また、rx_queue_<n>_drops も報告され、その合計値は rx_fifo_errors 値と同じになります。

# ethtool -S eth0 | egrep 'rx_fifo|drops'
     rx_fifo_errors:120674
     rx_queue_0_drops:4032
     rx_queue_1_drops:3036
     rx_queue_2_drops:5904
     rx_queue_3_drops:0
     rx_queue_4_drops:228
     rx_queue_5_drops:65656
     rx_queue_6_drops:19267
     rx_queue_7_drops:22551
# ethtool -S eth0 | egrep drops | awk '{print $2}' | paste -s -d+ | bc
120674

Environment

  • Red Hat Enterprise Linux 5
  • Red Hat Enterprise Linux 6

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