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Delay write rate based on current CF state #281

Merged
merged 1 commit into from
Dec 20, 2022
Merged

Delay write rate based on current CF state #281

merged 1 commit into from
Dec 20, 2022

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Yuval-Ariel
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@Yuval-Ariel Yuval-Ariel commented Dec 4, 2022 •
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closes #276

@Yuval-Ariel Yuval-Ariel self-assigned this Dec 4, 2022
@Yuval-Ariel Yuval-Ariel linked an issue Dec 4, 2022 that may be closed by this pull request
Delayed Write: calculate delay based on current state #276
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@Yuval-Ariel Yuval-Ariel requested review from udi-speedb and removed request for hilikspdb December 4, 2022 17:16
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Only skimmed through changes. First thoughts that came to my mind:

  • I see that the dynamic delay is by default true. Did all existing unit tests pass?
  • I see no new unit tests to test the specifics of the new mechanism or the ability to change the configured value dynamically via SetDBOptions().

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fixed a few unit tests - in recent commit. and plan to add new ones shortly

@Yuval-Ariel Yuval-Ariel force-pushed the 276-delayed-write-calculate-delay-based-on-current-state branch from 34b8523 to a8cc4bb Compare December 6, 2022 06:46
@Yuval-Ariel Yuval-Ariel force-pushed the 276-delayed-write-calculate-delay-based-on-current-state branch from 51ccf9f to 5c41a06 Compare December 14, 2022 12:45
@Yuval-Ariel Yuval-Ariel changed the base branch from yuval/rebase-7.7.3 to main December 14, 2022 13:05
@Yuval-Ariel Yuval-Ariel force-pushed the 276-delayed-write-calculate-delay-based-on-current-state branch from 5c41a06 to ffe9b9c Compare December 14, 2022 13:06
udi-speedb
udi-speedb reviewed Dec 19, 2022
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@Yuval-Ariel Yuval-Ariel force-pushed the 276-delayed-write-calculate-delay-based-on-current-state branch from ef4bb49 to 4998b24 Compare December 19, 2022 11:08
@udi-speedb udi-speedb self-requested a review December 19, 2022 12:23
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@Yuval-Ariel I have approved.
Please rebase on latest origin/main and squash the commits into one.
Thanks

@Yuval-Ariel
Dynamic Delay: new feature - Dynamic Delay (#276)
b4b5c1f 
Calculate the delayed write rate based on the current state of the CF
based on the value of delayed_write_rate that the user initially set.
The calculation reduces speed linearly with regards to how much
the CF has exceeded the slowdown conditions (L0 files and pending bytes).
The slowdown for writing to the last memtable (when theres more than 3)
is 10 fold
@Yuval-Ariel Yuval-Ariel force-pushed the 276-delayed-write-calculate-delay-based-on-current-state branch from a6c3d6a to b4b5c1f Compare December 19, 2022 20:18
@Yuval-Ariel Yuval-Ariel merged commit f1846de into main Dec 20, 2022
@Yuval-Ariel Yuval-Ariel deleted the 276-delayed-write-calculate-delay-based-on-current-state branch February 16, 2023 14:46
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Delayed Write: calculate delay based on current state
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