Rsync限制传输速度不起作用

Question

我试图通过指定 --bwlimit 选项来限制 Rsync 使用的带宽，但它似乎不起作用。我不知道我是否做错了什么......:

最大可能上传速度 = 10mbit/sec。我想将 rsync 限制在 50% 左右:

Rsync命令=

[~] # rsync --version
rsync  version 3.0.7  protocol version 30

[~] # rsync -a --verbose --partial --bwlimit=500 -e 'ssh -p 2200 -i /share/ssh/id_dsa' admin@10.0.3.10:/share/MD0_DATA/ /share/LocalData

结果=

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解决方案如下:

[~] # ipkg install trickle
Installing trickle (1.06-3) to root...
Downloading http://ipkg.nslu2-linux.org/feeds/optware/ts509/cross/unstable/trickle_1.06-3_i686.ipk
Installing libevent (2.0.16-1) to root...
Downloading http://ipkg.nslu2-linux.org/feeds/optware/ts509/cross/unstable/libevent_2.0.16-1_i686.ipk
Configuring libevent
Configuring trickle
Successfully terminated. 
[~] # trickle -d 500 rsync -a --verbose --partial -e 'ssh -p 2200 -i /share/ssh/id_dsa' admin@10.0.3.10:/share/MD0_DATA/ /share/LocalData
trickle: Could not reach trickled, working independently: No such file or directory
receiving incremental file list

Answer 1

--bwlimit=KBytes/s 应用移动平均值来限制生成的吞吐量，因此，您只会在传输量远大于您的可用带宽时才会注意到它。

来自 man页数，

blocks of data are sent, then if rsync determines the transfer was too fast, it will wait before sending the next data block. The result is an average transfer rate equaling the specified limit.)

查看trickle这似乎用更精致的算法来体现这个概念。