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[speed test] Test ssh connection speed
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| #!/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 100000kB 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 ~ 100MB | |
| test_size="100000" | |
| else | |
| test_size=$2 | |
| fi | |
| # generate a file with random data | |
| echo "Generating $test_size kB test file..." | |
| `dd if=/dev/random of=$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" |
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