Network unit according to first understand bit / s (bits per second), according to the international system of units standards 1kb of 1000 bits (bytes, Byte). The naming standards in accordance with IEC 1kiB = 1024B.
The unit is Gbps bandwidth or Mbps, and our common Mbps, for example, often referred to 1Mbps 1M bandwidth. Note that, 1Mbps of bandwidth per second does not mean speed up to 1M,
The maximum speed of 1Mbps bandwidth to 128kb per second, the speed of 2Mbps, compared with 256kb per second, and so on.
If 10mb bandwidth calculated as follows
128kb / s * 8 = (1024/1024) Mbps 10Mbps / 1Mbps = 10 Ge is so theoretical calculation, then, depends on the specific room of people is how to open.
Server bandwidth is generally divided into the upstream bandwidth, downstream bandwidth, the bandwidth of the public network, the network bandwidth.
Upstream bandwidth ( 购买时指定的1M带宽):是指服务器传输给客户端的带宽。 如从服务器下载文件，消耗的是服务器的上行带宽。
Downlink bandwidth ( 通常不限):是指客户端上传文件到服务器，消耗的是服务器的下行带宽。
Public network Bandwidth:通过公网ip产生的流量所占带宽。
Intranet Bandwidth:多台服务器处于同一网段，通过内网ip产生的流量所占带宽。
Centos test network bandwidth.
iperf benefit is purely contract and receive, to prevent hard disk drag, affect the test results.
yum install iperf --enablerepo = epel