Historical release page: ZJX 1.25.1 NIGHTMARKET. This record reflects ZJX state at the time of publication. Current engine release: ZJX 1.29.6.6. View ZJX engine evidence Download ZJX Basic 1.0 for Linux.
Historical release / ZJX 1.25.1 NIGHTMARKET
Two packing objectives: compact searches for the smallest complete archive; fast cuts packing time within strict archive-size and restore-cost guardrails. The quickest schedule tried was rejected because it slowed restores.
What changed
NIGHTMARKET introduced objective-driven packing. Compact, the no-argument default in this release, runs an exhaustive size-first search and keeps the smallest complete archive among eligible candidates. Fast is a fixed, reduced schedule, promoted from the former experimental balanced schedule and qualified independently under the unchanged fast contract.
Current release lineZJX 1.29.6.6
Qualification result
Controlled NIGHTMARKET qualification campaign. Method and evidence.
Positive-median wall savings in 4 / 4 primary corpus families across 48 / 48 pack starts.
Methodology
Four corpora, six matched pairs per corpus, two arms per pair with alternating order, a deterministic paired-ratio sign-test interval at alpha 0.05, no outlier deletion, no post-result tuning, and no pooling with earlier measurements. The campaign ran on a dedicated, quiesced laboratory host.
Limitations
The ratios apply to the qualifying campaign's frozen laboratory host, four corpora, commands, repetitions, and thresholds. Fast carries a published size budget: this campaign measured no size penalty, and other inputs may trade some size for time within explicit bounds.
Savings model
At the NIGHTMARKET qualification ratio, a 1,000-minute compact run would take about 364 minutes in qualified fast mode, saving about 636 minutes of wall time.
Modeled from the NIGHTMARKET qualification wall-time ratio. Actual savings depend on workload, hardware, configuration, resource utilization, and infrastructure pricing.
Evidence
Historical context
ZJX 1.25 shipped as a private, authenticated release and was withdrawn before public distribution: its runtime reported the fast objective as production-qualification-pending, contradicting the release claim. ZJX 1.25.1 corrected that status string, added a regression assertion for the exact API surface, and passed a fresh exact-byte qualification with new binaries, a new 48-start campaign, and new release validation.
Current release
Greyforge measures your workload against established comparators and returns an evidence packet for technical review.