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tweak: rename tail_tokens -> preserve_recent_tokens (#23491)

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This commit is contained in:
Aiden Cline
2026-04-20 01:06:29 -05:00
committed by GitHub
parent e539efe2b9
commit c6c56ac2cf
5 changed files with 23 additions and 20 deletions
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15
packages/opencode/src/session/compaction.ts
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@@ -34,18 +34,21 @@ export const PRUNE_MINIMUM = 20_000
export const PRUNE_PROTECT = 40_000
const PRUNE_PROTECTED_TOOLS = ["skill"]
const DEFAULT_TAIL_TURNS = 2
const MIN_TAIL_TOKENS = 2_000
const MAX_TAIL_TOKENS = 8_000
const MIN_PRESERVE_RECENT_TOKENS = 2_000
const MAX_PRESERVE_RECENT_TOKENS = 8_000
type Turn = {
start: number
end: number
id: MessageID
}
function tailBudget(input: { cfg: Config.Info; model: Provider.Model }) {
function preserveRecentBudget(input: { cfg: Config.Info; model: Provider.Model }) {
return (
input.cfg.compaction?.tail_tokens ??
Math.min(MAX_TAIL_TOKENS, Math.max(MIN_TAIL_TOKENS, Math.floor(usable(input) * 0.25)))
input.cfg.compaction?.preserve_recent_tokens ??
Math.min(
MAX_PRESERVE_RECENT_TOKENS,
Math.max(MIN_PRESERVE_RECENT_TOKENS, Math.floor(usable(input) * 0.25)),
)
)
}
@@ -134,7 +137,7 @@ export const layer: Layer.Layer<
}) {
const limit = input.cfg.compaction?.tail_turns ?? DEFAULT_TAIL_TURNS
if (limit <= 0) return { head: input.messages, tail_start_id: undefined }
const budget = tailBudget({ cfg: input.cfg, model: input.model })
const budget = preserveRecentBudget({ cfg: input.cfg, model: input.model })
const all = turns(input.messages)
if (!all.length) return { head: input.messages, tail_start_id: undefined }
const recent = all.slice(-limit)