Home / server / Questions / 193399
Accepted
user28362
Asked: 2010-10-22 05:42:23 +0800 CST

Set maximum speed for scp

  • 772

Is there a way to limit the speed of scp (or rsync)? I couldn't find any information in the man page, nor on the internet.

linux rsync

3 Answers

  1. Best Answer

    From the man page: -l limit Limits the used bandwidth, specified in Kbit/s.

    • 11

  2. I'm not convinced the -l setting works properly with big values: On my RHEL6 system if see:

    -l not specified

    • Expected: Whatever the wan can handle
    • Actual: 20 Megabytes per second

    -l 8000

    • Expected: 1 Megabyte per second
    • Actual: 1 Megabyte per second

    -l 80000

    • Expected: 10 Megabytes per second
    • Actual: 150 Kilobytes per second
    • 8

  3. Using the "-l" switch on scp works very well. Its wise to set this switch with lower values than your maximum upload speed.

    About higher values, if scp not attending the defined speed this question is related at your ISP that delimitated your upload speed after some seconds.

    • 0