kvserver: add cpu time rebalancing #91674
Closed
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
This patch introduces the necessary components to switch to cpu time rebalancing.
cpu time accounting
ReplicaStats
and allows for observing the aggregate cpu time spent on replicas via an exported metricrebalancing.cpunanospersecond
.instrument optional cpu balancing
kv.allocator.load_based_rebalancing_dimension
. The available options areqps
andcpu
, whereqps
is the defaultsetting.
kv.allocator.cpu_rebalance_threshold
This setting defaults to 0.1, 10% aceptable difference from the mean as a target.