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MBps与Mbps区别
2022-08-05 00:36:00 【go|Python】
MBps与Mbps区别
Mbps是 M bit per secend 的缩写(每秒传输多少兆位)=Mb/s
MBps是 M Byte per secend 的缩写(每秒传输多少兆字节)=MB/s
Mb和MB是容量单位,后面加/s就是速度单位。
1byte = 8bits
1KB = 1024 byte
1MB = 1024 KB
1GB = 1024 MB
1TB = 1024 GB
1MBps=8Mbps
1Mbps=1024Kbps
1Kbps=1024bps
1024Mbps=1Gbps
MBps 和 Mbps 相差8倍,通常供应商开出的1M, 2M, 5M, 8M, 10M 带宽其实都是Mbps而不是MBps,只要换算一下就可以算出我们的实际速度是多大了。
例如:供应商提供给我们的是1M带宽的网络,1Mbps(兆位/秒)= 1/8MBps(兆字节/秒)=(1/8)×1024KBps = 128KBps(千字节/秒) x 1024 = 131072 Bps(字节/秒),得出我们的网速为 131072B/s,由于网络传输过程中还有一些流失因素,因此真实的网速为 128KB/s × 75% = 96KB/s。
但是实际上,供应商在提供时,单位进制都是以 1000 而不是 1024 为进制设计。因此网速只会更低,这一点在硬盘 厂商也是这样的。
所以实际上,1M带宽的网络 1Mbps(兆位/秒) = 1/8 MBps(兆字节/秒) = (1/8)×1000KBps = 125KBps(千字节/秒) x 1024 = 128,000 Bps(字节/秒) ,得出我们的网速为 128,000 B/s,每 1 M 带宽,网速会减少 3072 B/s = 3.072 KB/S
并且,相同的流量,我们需要付出更多的钱。因为,软件,图片,视频,音频的大小,都是以 1024 进制换算的。
假设一个软件为 100Mb, 那么我们需要 下载 104,857,600 byte 大小的内容,需要 104.8576 Mb 的流量。
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