public:grid:network_tuning

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public:grid:network_tuning [2009-11-30 13:16] – Document moved from software:network_tuning Arno Schoenmakerspublic:grid:network_tuning [2017-03-08 15:27] (current) – external edit 127.0.0.1
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    net.ipv4.tcp_no_metrics_save = 1    net.ipv4.tcp_no_metrics_save = 1
    net.ipv4.tcp_moderate_rcvbuf = 1    net.ipv4.tcp_moderate_rcvbuf = 1
 +
 +   sysctl -w net.ipv4.tcp_no_metrics_save=1
 +   sysctl -w net.ipv4.tcp_moderate_rcvbuf=1
 +
 And then these is this: And then these is this:
    # for 10 GigE, use this    # for 10 GigE, use this
    # net.core.netdev_max_backlog = 30000    # net.core.netdev_max_backlog = 30000
 +
 +   sysctl -w net.core.netdev_max_backlog=30000
  
 And of course we need to do And of course we need to do
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   100000 packets received by filter   100000 packets received by filter
   0 packets dropped by kernel   0 packets dropped by kernel
 +
 +**Please note that on Ubunto 9.04 and higher you have to switch off AppArmor to get it to work:**
 +  aa-complain usr/sbin/tcpdump
  
 Then later you can browse the dump you made: Then later you can browse the dump you made:
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 ===== Manufacturer recommendations ===== ===== Manufacturer recommendations =====
  
-[[Myri_README]]+[[software:myri_readme]]
  
 ===== Links ===== ===== Links =====
  • Last modified: 2009-11-30 13:16
  • by Arno Schoenmakers