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kvserver: delay range quiescence #103266

Merged
merged 2 commits into from May 18, 2023
Merged

kvserver: delay range quiescence #103266

merged 2 commits into from May 18, 2023

Commits on May 14, 2023

  1. kvserver: move testingDisableQuiescence to replica_raft_quiesce.go 

    Epic: none
Release note: None
    @erikgrinaker
    erikgrinaker committed May 14, 2023
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  2. kvserver: delay range quiescence 

    This patch only quiesces ranges after 6 ticks (3 seconds) without any
proposals, configurable via `COCKROACH_QUIESCE_AFTER_TICKS`.
Unquiescence incurs a proposal, which has a non-negligible cost, and on
low-latency clusters with steady write load this may otherwise
(un)quiesce ranges very frequently, as often as every tick.

Epic: none
Release note (performance improvement): ranges now only quiesce after 3
seconds without proposals, to avoid frequent unquiescence which incurs
an additional Raft proposal. This is configurable via
`COCKROACH_QUIESCE_AFTER_TICKS` which defaults to 6.
    @erikgrinaker
    erikgrinaker committed May 14, 2023
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