cockroachdb / cockroachdb/cockroach
admission: add IOPS accounting for pacing write traffic
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A-admission-control
C-enhancement
T-admission-control
v25.2.0-prerelease
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Description
This is a sub issue for the more higher-level IOPS work. This issue tracks the problem of introducing IOPS as a tracked resource inside AC and pacing writes based on it. We need a mechanism to track both read and write IOPS, similar to disk bandwidth, and pace background writes based on the resource availability. For now, we don't pace reads, but still account for them (this will be a separate follow-up piece of work).
Jira issue: CRDB-47172
Epic CRDB-42949
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