Difference between revisions of "Pcap worksheet"
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(Replaced content with "<poem>1.) OS Stats $ ifconfig eth0; ifconfig -a $ netstat -ni $ netstat -s $ cat /proc/net/dev | columns -t $ awk '{ print $1,$5 }' /proc/net/dev $ watch -n 1 cat /proc/i...") |
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| + | $ ethtool -S eth0 // Statistics $ ethtool -S eth0 | egrep '(rx_missed|no_buffer)' // Drop Values | ||
| + | $ ethtool -g eth0 ; ethtool -G eth0 rx 4096 tx 4096 // FIFO RX Descriptors | ||
| + | $ ethtool -k eth0 ; ethtool -K gro on gso on rx on // Offloading | ||
| + | $ ethtool -a eth0 ; ethtool -A rx off autoneg off // Pause Frames | ||
| + | $ ethtool -c eth0 ; ethtool -C eth0 rx-usecs 100 // Interrupt Coalescence | ||
| + | |||
| + | $ cat /proc/net/softnet_stats; printf "%d" 0xffff //Backlog Queue Stat | ||
| + | $ echo "1" > /proc/sys/net/core/bpf_jit_enable $ sysctl net.core.netdev_max_backlog; sysctl -w net.core.netdev_max_backlog=3000 | ||
| + | $ sysctl net.core.wmem_max; sysctl net.core.rmem_max | ||
| + | $ sysctl net.core.wmem_default; sysctl net.core.rmem_default | ||
| + | $ sysctl net.core.optmem_max $ echo "net.core.netdev_max_backlog=1024" >> /etc/sysctl.conf | ||
| + | |||
| + | [http://jonschipp.com/talks/pcapworksheet.txt] | ||
Latest revision as of 18:39, 12 November 2013
$ ethtool -S eth0 // Statistics $ ethtool -S eth0 | egrep '(rx_missed|no_buffer)' // Drop Values $ ethtool -g eth0 ; ethtool -G eth0 rx 4096 tx 4096 // FIFO RX Descriptors $ ethtool -k eth0 ; ethtool -K gro on gso on rx on // Offloading $ ethtool -a eth0 ; ethtool -A rx off autoneg off // Pause Frames $ ethtool -c eth0 ; ethtool -C eth0 rx-usecs 100 // Interrupt Coalescence
$ cat /proc/net/softnet_stats; printf "%d" 0xffff //Backlog Queue Stat $ echo "1" > /proc/sys/net/core/bpf_jit_enable $ sysctl net.core.netdev_max_backlog; sysctl -w net.core.netdev_max_backlog=3000 $ sysctl net.core.wmem_max; sysctl net.core.rmem_max $ sysctl net.core.wmem_default; sysctl net.core.rmem_default $ sysctl net.core.optmem_max $ echo "net.core.netdev_max_backlog=1024" >> /etc/sysctl.conf