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Posted to notifications@dubbo.apache.org by "Alanxtl (via GitHub)" <gi...@apache.org> on 2026/06/13 06:28:30 UTC
[I] perf(loadbalance): reduce per-select temporary slice allocations [dubbo-go]
Alanxtl opened a new issue, #3407:
URL: https://github.com/apache/dubbo-go/issues/3407
## Background
Some load balance implementations allocate temporary slices on each `Select` call. For common small invoker lists, those allocations can be avoided without changing the selection algorithm.
Examples include weighted random, least-active selection, and alias-method picker construction.
## Scope
Reduce temporary allocations in request-time load balance selection while keeping the existing selection semantics unchanged. A conservative approach is to use fixed-size stack arrays for small invoker counts and fall back to heap slices for larger lists.
Relevant code:
- `cluster/loadbalance/random/loadbalance.go`
- `cluster/loadbalance/leastactive/loadbalance.go`
- `cluster/loadbalance/aliasmethod/alias_method.go`
## Acceptance Criteria
- Load balance behavior and existing tests remain unchanged.
- Benchmarks show reduced allocations for representative small and medium invoker counts.
- Avoid introducing long-lived caches in this issue; keep the change local and low-risk.
- `go test ./cluster/loadbalance` passes.
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Re: [I] perf(loadbalance): reduce per-select temporary slice allocations [dubbo-go]
Posted by "Alanxtl (via GitHub)" <gi...@apache.org>.
Alanxtl closed issue #3407: perf(loadbalance): reduce per-select temporary slice allocations
URL: https://github.com/apache/dubbo-go/issues/3407
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Re: [I] perf(loadbalance): reduce per-select temporary slice allocations [dubbo-go]
Posted by "Alanxtl (via GitHub)" <gi...@apache.org>.
Alanxtl commented on issue #3407:
URL: https://github.com/apache/dubbo-go/issues/3407#issuecomment-4701031669
close via #3415
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Re: [I] perf(loadbalance): reduce per-select temporary slice allocations [dubbo-go]
Posted by "Vanillaxi (via GitHub)" <gi...@apache.org>.
Vanillaxi commented on issue #3407:
URL: https://github.com/apache/dubbo-go/issues/3407#issuecomment-4697776320
Please assign to me
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