netqtop(8)                                           System Manager's Manual                                           netqtop(8)

NAME
       netqtop - Summarize PPS, BPS, average size of packets and packet counts ordered by packet sizes on each queue of a network
       interface.

SYNOPSIS
       netqtop [-n nic] [-i interval] [-t throughput]

DESCRIPTION
       netqtop  accounts  statistics  of  both transmitted and received packets on each queue of a specified network interface to
       help developers check if its traffic load is balanced.  The result is displayed as a table with columns of PPS, BPS, aver‐
       age size and packet counts in range [0,64), [64, 5120), [512, 2048), [2048, 16K), [16K, 64K).  This is printed every given
       interval (default 1) in seconds.

       The tool uses the net:net_dev_start_xmit and net:netif_receive_skb kernel tracepoints.  Since it uses tracepoint, the tool
       only works on Linux 4.7+.

       netqtop introduces significant overhead while network traffic is large. See OVERHEAD section below.

REQUIREMENTS
       CONFIG_bpf and bcc

OPTIONS
       -n NIC Specify the network interface card

       -i INTERVAL
              Print results every INTERVAL seconds.  The default value is 1.

       -t THROUGHPUT
              Print BPS and PPS of each queue.

EXAMPLES
       Account statistics of eth0 and output every 2 seconds:
              # netqtop -n eth0 -i 1

OVERHEAD
       In performance test, netqtop introduces a overhead up to 30% PPS drop while printing interval is set to 1  second.  So  be
       mindful of potential packet drop when using this tool.

       It also increases ping-pong latency by about 1 usec.

SOURCE
       This is from bcc

              https://github.com/iovisor/bcc

       Also  look in the bcc distribution for a netqtop_example.txt file containing example usage, output and commentary for this
       tool.

OS
       Linux

STABILITY
       Unstable - in development

AUTHOR
       Yolandajn

USER COMMANDS                                               2020-07-30                                                 netqtop(8)