Skip to content

Instantly share code, notes, and snippets.

@mohanraj-r
Last active August 10, 2024 13:59

Revisions

  1. mohanraj-r revised this gist Sep 5, 2017. No changes.
  2. mohanraj-r created this gist Oct 25, 2016.
    54 changes: 54 additions & 0 deletions scp-speed-test.sh
    Original file line number Diff line number Diff line change
    @@ -0,0 +1,54 @@
    #!/bin/bash
    # scp-speed-test.sh
    # Author: Alec Jacobson alecjacobsonATgmailDOTcom
    # http://www.alecjacobson.com/weblog/?p=635
    #
    # Test ssh connection speed by uploading and then downloading a 10000kB test
    # file (optionally user-specified size)
    #
    # Usage:
    # ./scp-speed-test.sh user@hostname [test file size in kBs]
    #

    ssh_server=$1
    test_file=".scp-test-file"

    # Optional: user specified test file size in kBs
    if test -z "$2"
    then
    # default size is 10kB ~ 10mB
    test_size="10000"
    else
    test_size=$2
    fi


    # generate a 10000kB file of all zeros
    echo "Generating $test_size kB test file..."
    `dd if=/dev/zero of=$test_file bs=$(echo "$test_size*1024" | bc) \
    count=1 &> /dev/null`

    # upload test
    echo "Testing upload to $ssh_server..."
    up_speed=`scp -v $test_file $ssh_server:$test_file 2>&1 | \
    grep "Bytes per second" | \
    sed "s/^[^0-9]*\([0-9.]*\)[^0-9]*\([0-9.]*\).*$/\1/g"`
    up_speed=`echo "($up_speed*0.0009765625*100.0+0.5)/1*0.01" | bc`

    # download test
    echo "Testing download from $ssh_server..."
    down_speed=`scp -v $ssh_server:$test_file $test_file 2>&1 | \
    grep "Bytes per second" | \
    sed "s/^[^0-9]*\([0-9.]*\)[^0-9]*\([0-9.]*\).*$/\2/g"`
    down_speed=`echo "($down_speed*0.0009765625*100.0+0.5)/1*0.01" | bc`

    # clean up
    echo "Removing test file on $ssh_server..."
    `ssh $ssh_server "rm $test_file"`
    echo "Removing test file locally..."
    `rm $test_file`

    # print result
    echo ""
    echo "Upload speed: $up_speed kB/s"
    echo "Download speed: $down_speed kB/s"