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docs: kernel: Clarify printk_ratelimit_burst reset behavior

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Add clarification that the printk_ratelimit_burst window resets after
printk_ratelimit seconds have elapsed, allowing another burst of
messages to be sent. This helps users understand that the rate limiting
is not permanent but operates in periodic windows.

Signed-off-by: Breno Leitao <leitao@debian.org>
Reviewed-by: Paul E. McKenney <paulmck@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/20250714-docs_ratelimit-v1-1-51a6d9071f1a@debian.org
This commit is contained in:
Breno Leitao
2025-07-14 05:06:27 -07:00
committed by Jonathan Corbet
parent cae5841583
commit 2a1390c813
1 changed files with 2 additions and 1 deletions
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3
Documentation/admin-guide/sysctl/kernel.rst
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@@ -1111,7 +1111,8 @@ printk_ratelimit_burst
While long term we enforce one message per `printk_ratelimit`_
seconds, we do allow a burst of messages to pass through.
``printk_ratelimit_burst`` specifies the number of messages we can
send before ratelimiting kicks in.
send before ratelimiting kicks in. After `printk_ratelimit`_ seconds
have elapsed, another burst of messages may be sent.
The default value is 10 messages.