JuliusBrussee/caveman · error

cachebench: replay schedule duration overflow

Error message

cachebench: replay schedule duration overflow

What it means

Error "cachebench: replay schedule duration overflow" thrown in JuliusBrussee/caveman.

Source

Thrown at cacheengine/cachebench/replay.go:412

		}
		tokens[record.TokenBasis] = true
		if record.DeclaredInputTokens <= 0 || record.DeclaredInputTokens < record.PrefixTokens || record.MaxOutputTokens <= 0 || !requestBudgetMatchesBody(record) {
			return ReplayPreflight{}, fmt.Errorf("cachebench: replay request %q has invalid billed-token budget", record.RequestID)
		}
		input, output := int64(record.DeclaredInputTokens), int64(record.MaxOutputTokens)
		if input > limits.MaxDeclaredBilledTokens-worstCase || output > limits.MaxDeclaredBilledTokens-worstCase-input {
			return ReplayPreflight{}, fmt.Errorf("cachebench: replay declared billed-token ceiling exceeds limit %d", limits.MaxDeclaredBilledTokens)
		}
		declaredInput += input
		declaredOutput += output
		worstCase += input + output
		if !previous.IsZero() {
			gap, err := scaledReplayGap(at.Sub(previous), timeScale)
			if err != nil || gap > limits.MaxGap {
				return ReplayPreflight{}, fmt.Errorf("cachebench: replay gap before %q exceeds limit %s", record.RequestID, limits.MaxGap)
			}
			if int64(gap) > math.MaxInt64-scheduled {
				return ReplayPreflight{}, errors.New("cachebench: replay schedule duration overflow")
			}
			scheduled += int64(gap)
		}
		previous = at
	}
	bases := make([]string, 0, len(timing))
	for basis := range timing {
		bases = append(bases, basis)
	}
	sort.Strings(bases)
	tokenBases := make([]string, 0, len(tokens))
	for basis := range tokens {
		tokenBases = append(tokenBases, basis)
	}
	sort.Strings(tokenBases)
	return ReplayPreflight{
		Requests: len(records), DeclaredInputTokens: declaredInput,
		DeclaredMaxOutputTokens: declaredOutput, DeclaredBilledTokens: worstCase,

View on GitHub (pinned to 27d5a3981a)

Solutions

1. Reduce the replay schedule so the total duration does not overflow.

When it happens

Trigger: Thrown at cacheengine/cachebench/replay.go:412 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of JuliusBrussee/caveman@27d5a3981a (2026-08-15). Data as JSON: /api/errors/cba2fcd6e12eeaef. Report an issue: GitHub.