If you dont have a iperf on your server and you cannot install it for some reasons my iperf article will not help you to determine your throuphput. But you can check your bandwidth with some other tools. Most of them are standardtools on a server.
Alternative one: netcat With
netcat you can do something similiar. First you need to open a listening port on one side, then you connect from another one.
# Serverside [root@weichert ~] # netcat -vvnlp 12345 > /dev/null listening on [any] 12345 ... connect to [127.0.0.1] from (UNKNOWN) [127.0.0.1] 38340 sent 0, rcvd 149621964 # Clientside time yes|netcat -v localhost 12345 > /dev/null localhost [127.0.0.1] 12345 (?) open real 0m41.912s user 0m40.796s sys 0m7.252s
Now you have to do some math, yeah i know - we all like that. Multiply the bytes rcvd by 8 to get total bits, then divide by the time: Result is 28559 MBit/s => 28Gbit/s
Alternative two: dd over ssh or netcat Lets have a look to dd. Here you will create a transfer over
netcat oder with
ssh to the target.
dd if=/dev/zero bs=1024 count=512 | netcat -v localhost 12345 # you will get something like 536870912 bytes (537 MB) copied, 3.42426 s, 182 MB/s # with ssh dd if=/dev/zero bs=1024 count=512 | ssh firstname.lastname@example.org 'cat /dev/null' 536870912 bytes (537 MB) copied, 3.42426 s, 182 MB/s
You have to multiply the 182MB/s by 8 to get Mbit/s
Have fun with playing around with that.