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gc: config gc io limit dynamically #5769
Signed-off-by: youjiali1995 firstname.lastname@example.org
What have you changed?
It's used to limit the write flow when gc influences normal requests, and remove the limit when there is no influence.
What is the type of the changes?
How is the PR tested?
Does this PR affect documentation (docs) or should it be mentioned in the release notes?
Yes. I will file one.
Does this PR affect
Is it possible that accumulated GC tasks blocks
For example, originally we set the value too small and find the speed too slow. Then, we want to use tikv-ctl to make the limit larger. However, the previous GC task runs too slow so that the change limit task cannot run. Can we solve the problem?
Yes, it's possible. I can create the
@sticnarf I think changing limit and requesting quota are both write operations.
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