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6d6899c2f0
Allow 2.5k or 3.7M etc. Add mention in documentation. Verify in test case 1623. Closes #20266
42 lines
1.4 KiB
Markdown
42 lines
1.4 KiB
Markdown
---
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c: Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
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SPDX-License-Identifier: curl
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Long: limit-rate
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Arg: <speed>
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Help: Limit transfer speed to RATE
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Category: connection
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Added: 7.10
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Multi: single
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See-also:
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- rate
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- speed-limit
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- speed-time
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Example:
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- --limit-rate 123.45K $URL
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- --limit-rate 1000 $URL
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- --limit-rate 10M $URL
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- --limit-rate 200K --max-time 60 $URL
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---
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# `--limit-rate`
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Specify the maximum transfer rate you want curl to use - for both downloads
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and uploads. This feature is useful if you have a limited pipe and you would
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like your transfer not to use your entire bandwidth. To make it slower than it
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otherwise would be.
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The given speed is measured in bytes/second, unless a suffix is appended.
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Appending 'k' or 'K' counts the number as kilobytes, 'm' or 'M' makes it
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megabytes etc. The supported suffixes (k, M, G, T, P) are 1024-based. For
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example 1k is 1024. Examples: 200K, 3m and 1G.
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The rate limiting logic works on averaging the transfer speed to no more than
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the set threshold over a period of multiple seconds.
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If you also use the --speed-limit option, that option takes precedence and
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might cripple the rate-limiting slightly, to help keep the speed-limit
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logic working.
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Starting in curl 8.19.0, the rate can be specified using a fraction as in
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`2.5M` for two and a half megabytes per second. It only works with a period
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(`.`) delimiter, independent of what your locale might prefer.
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