Linux I/O(NIU) Performance Test

 

When you need to test real bandwidth performance between Linux base servers, it's so useful!

 

<Speed check>

You can check your NIC speed.

# ethtool enp0s3                                  // enp0s3 is example interface name.
Settings for enp0s3:
        Supported ports: [ TP ]
        Supported link modes:   10baseT/Half 10baseT/Full
                                100baseT/Half 100baseT/Full
                                1000baseT/Full
        Supported pause frame use: No
        Supports auto-negotiation: Yes
        Supported FEC modes: Not reported
        Advertised link modes:  10baseT/Half 10baseT/Full
                                100baseT/Half 100baseT/Full
                                1000baseT/Full
        Advertised pause frame use: No
        Advertised auto-negotiation: Yes
        Advertised FEC modes: Not reported
        Speed: 1000Mb/s
        Duplex: Full
        Port: Twisted Pair
        PHYAD: 0
        Transceiver: internal
        Auto-negotiation: on
        MDI-X: off (auto)
        Supports Wake-on: umbg
        Wake-on: d
        Current message level: 0x00000007 (7)
                               drv probe link
        Link detected: yes

 

 

<Server>

You need 'nmap-ncat' for this test in a server side.

 

#sudo yum install nmap-ncat -y

#sudo nc -l 22333 > /dev/null

 

Now, the server is ready. Let's move on a client side.

 

 

<Client>

You are going to send a 1GiByte file to the server.

 

#dd if=/dev/zero bs=1G count=1 | nc 192.168.1.x 22333         // IP is example, you should command server IP

1+0 records in
1+0 records out
1073741824 bytes (1.1 GB, 1.0 GiB) copied, 7.83713 s, 137 MB/s

 

1073741824 bytes (1.1 GB, 1.0 GiB) copied

You should know what is different with GB and GiB.

You can calculate the storage and file volume on Google.

www.google.com/search?client=firefox-b-d&q=1GiB

 

7.83713 s

it took as long as 7.8s for Client to send 1GiB to Server.

 

137 MB/s

the speed was 137 MegaByte/s