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, average 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