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Dropped Packets

Dropped Packets on MariaDB/MySQL Linux Servers

Thu, 2019-11-28 12:05 — Shinguz

Table of Contents

  • ifconfig
  • ip
  • ethtool --statistics
  • nstat
  • netstat --statistics
  • ss
  • Reasons for dropped packets
  • Features of Network card
  • Features of Network driver
  • Network driver ring buffer
  • TCP socket received and send buffer
  • Flow Control
  • Check over time: sar
  • Dropwatch
  • perf
  • tcpdump
  • /proc/net/netstat
  • System Tap (stap)
  • Literature

When we do MariaDB and MySQL Database server analysis we see from time to time systems with a lot of dropped packets on a network interface:

ifconfig

# export DEV=enp0s25
# ifconfig …
tags: 
network
dropped packets
packets
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