# ZJX telemetry comparator campaign public source note (1.28.0 LOCKWIRE) Published: 2026-09-06 Campaign: zjx-site-telemetry-comparator-2026-09-06 Started (UTC): 2026-09-06T12:28:15Z · Finished (UTC): 2026-09-06T13:08:34Z Status: featured public comparison for the ZJX product site Previous campaign: ZJX 1.27 CIPHERGLASS, 2026-09-05, (retained as published lineage) ## Claim boundary On one real service telemetry JSONL capture, ZJX 1.28.0 LOCKWIRE on the compact objective wrote a complete archive of 4,412,984 bytes. The strongest of the fourteen world archive baselines, zpaq -m5, wrote 7,125,674 bytes. ZJX is therefore 38.1% smaller than the strongest comparator and 98.7% smaller than the raw input. The fast objective wrote 4,412,984 bytes. Every archive, ZJX and comparator alike, was restored and matched against the source SHA-256. This is one dataset and one build. It is not a universal compression-ratio claim and does not predict any other workload. Wall time and peak memory were observed in single sequential runs on the laboratory host under an exclusive quiesced lease; they are recorded below as indicative observations without repetition statistics and are not release performance evidence. ZJX performance qualification is a separate campaign under its own measurement law. Product site: Brief section: Benchmark ledger: ## Identity | Item | Value | |---|---| | Input | one JSONL file, 342,409,609 bytes, SHA-256 `9775bf5d9a352960a857401479ba3f314d4ed8d65a4d24b52014b1dee60605ec` | | Records | 681,648 (schema census of the same capture) | | Content | private service telemetry captured 2026-06-03; not published | | ZJX binary | `zjx 1.28.0 (30307f195b6a2d25d3167676760034a58a8e1c30, ReleaseSafe)` | | ZJX binary SHA-256 | `10ee0d9e8c1be322f0ebdd2e3d2f954c522f851b43e7a84a0abc4f77b56931db` | | ZJX package | `zjx-1.28.0-linux-x86_64.tar.gz`, SHA-256 `fa80b8b4424d81c04a3bd506af9c540ef285dbced987165694a90c1c38ce6218` (the published release asset) | | ZJX build | ZJX 1.28.0 LOCKWIRE released Linux x86-64 package (tag v1.28.0); the executable was taken from the package as published; source revision 30307f19, ReleaseSafe, pinned compiler toolchain, libsodium 1.0.22 linked statically | | Lineage | The previous campaign (ZJX 1.27 CIPHERGLASS, 2026-09-05) wrote 4,412,968 bytes for the compact objective on the same input; this archive differs by +16 bytes, exactly the 16-byte manifest-integrity footer that LOCKWIRE adds to every archive it writes. Comparator archive bytes that differ from the previous campaign (same tool versions and settings; multi-threaded archivers can write different bytes on a host with a different processor count): RAR5 -m5 9,843,396 to 9,842,920. | | Host | Greyforge Labs laboratory host under an exclusive quiesced measurement lease with no other workload running; Linux x86_64, 8 logical processors, 15 GiB RAM | | Timing authority | Exclusive quiesced lease on the laboratory host; sequential single runs; no repetition statistics; indicative observations, not the release performance qualification | | Tar wrapper | POSIX tar, sorted names, owner/group 0, fixed mtime; 342,415,360 bytes, SHA-256 `0678ac1c0b446fc4303fa6adaaaa82a84a6b3102898f74e463f8230b4e565e4c` | Tool versions: tar tar (GNU tar) 1.35; bzip2 bzip2, a block-sorting file compressor. Version 1.0.8, 13-Jul-2019.; xz xz (XZ Utils) 5.4.5; zstd *** Zstandard CLI (64-bit) v1.5.5, by Yann Collet ***; brotli brotli 1.1.0; lz4 *** LZ4 command line interface 64-bits v1.9.4, by Yann Collet ***; zip Copyright (c) 1990-2008 Info-ZIP - Type 'zip "-L"' for software license.; gzip gzip 1.12; 7-Zip 7-Zip 23.01 (x64) : Copyright (c) 1999-2023 Igor Pavlov : 2023-06-20; zpaq zpaq v7.15 journaling archiver, compiled Jan 5 2021; rar RAR 7.00 Copyright (c) 1993-2024 Alexander Roshal 26 Feb 2024; GNU time time (GNU Time) UNKNOWN. Tool executable SHA-256 prefixes: 7z `d37cdf4cc242`; brotli `01969d4716e4`; bzip2 `909769e6f36a`; gzip `afea077ce127`; lz4 `87c0d5d060fd`; rar `338274d32151`; tar `3ee2c3c0b4dd`; unzip `b582f2d78298`; xz `b5b163eb2732`; zip `7e79c60c3d1e`; zpaq `7d0d968162b9`; zstd `7c5468b370f7`. ## Method ZJX archived the file directly with the compact and fast objectives, then the native archive test verified every payload digest and a native restore recovered the file, whose SHA-256 was compared with the source. Stream compressors (bzip2, xz, zstd, brotli, lz4, gzip) compressed the deterministic tar and were verified by decompressing to a stream whose SHA-256 was compared with the tar. Container archivers (zip, 7-Zip, zpaq, rar) archived the file directly and were verified by extracting and comparing the file SHA-256. Comparator arguments are the ones the ZJX laboratory's world baseline set uses. Runs were sequential; each creation was wrapped in GNU time to record wall, CPU, and peak RSS. ## Results | Archiver and settings | Complete archive bytes | Versus strongest comparator | Restored and matched | Wall s (indicative) | User+sys s | Peak RSS KiB | |---|---:|---|---|---:|---:|---:| | ZJX 1.28.0 compact | 4,412,984 | 38.1% smaller | yes | 207.8 | 208.4 | 669,084 | | ZJX 1.28.0 fast | 4,412,984 | 38.1% smaller | yes | 187.7 | 187.6 | 669,156 | | zpaq -m5 | 7,125,674 | strongest comparator | yes | 199.2 | 870.5 | 3,759,076 | | zstd --ultra -22 --long=31 (tar) | 7,280,110 | 2.2% larger | yes | 460.4 | 460.5 | 1,144,484 | | brotli -q 11 (tar) | 7,345,538 | 3.1% larger | yes | 293.2 | 293.2 | 187,280 | | xz -9e (tar) | 7,612,052 | 6.8% larger | yes | 350.3 | 350.2 | 657,444 | | zstd -19 --long=31 (tar) | 7,800,328 | 9.5% larger | yes | 156.9 | 157.2 | 557,236 | | zstd -19 (tar) | 8,149,050 | 14.4% larger | yes | 149.9 | 150.2 | 217,860 | | 7-Zip LZMA2 -mx=9, single thread | 9,392,518 | 31.8% larger | yes | 64.6 | 64.6 | 694,256 | | 7-Zip LZMA2 -mx=9 | 9,666,962 | 35.7% larger | yes | 40.7 | 59.6 | 1,540,256 | | RAR5 -m5 | 9,842,920 | 38.1% larger | yes | 10.0 | 55.7 | 579,284 | | 7-Zip PPMd -mx=9 | 12,612,270 | 77.0% larger | yes | 14.2 | 14.2 | 270,136 | | bzip2 -9 (tar) | 34,456,468 | 383.6% larger | yes | 25.3 | 25.3 | 7,804 | | gzip -9 (tar) | 40,176,031 | 463.8% larger | yes | 4.9 | 4.9 | 1,776 | | zip -9 (deflate) | 40,176,334 | 463.8% larger | yes | 4.9 | 4.9 | 2,484 | | lz4 -12 (tar) | 56,999,958 | 699.9% larger | yes | 8.4 | 8.4 | 6,520 | Comparators completed and verified: 14/14. Complete archive bytes include format overhead. ## Exact commands - ZJX compact and fast: the native create command with the named objective and JSON output, then the native archive test and restore commands. ZJX command recipes are not published; the evaluation report reproduces them for the customer. - `bzip2 -9 (tar)`: `bzip2 -9 -c` · restore: `bzip2 -d -c` - `xz -9e (tar)`: `xz --format=xz --threads=1 --check=crc64 -9e --stdout` · restore: `xz -d -c` - `zstd -19 (tar)`: `zstd -q --threads=1 -c -19` · restore: `zstd -d -c` - `zstd -19 --long=31 (tar)`: `zstd -q --threads=1 -c -19 --long=31` · restore: `zstd -d -c --long=31` - `zstd --ultra -22 --long=31 (tar)`: `zstd -q --threads=1 -c --ultra -22 --long=31` · restore: `zstd -d -c --long=31` - `brotli -q 11 (tar)`: `brotli -q 11 -c` · restore: `brotli -d -c` - `lz4 -12 (tar)`: `lz4 -12 -q -c` · restore: `lz4 -d -c` - `zip -9 (deflate)`: `zip -9 -q -r /out/zip-deflate-9.zip 20260603.jsonl` · restore: `unzip -q -o /out/zip-deflate-9.zip` - `gzip -9 (tar)`: `gzip -9 -c` · restore: `gzip -d -c` - `7-Zip LZMA2 -mx=9`: `7z a -t7z -m0=lzma2 -mx=9 -ms=on -bd -bb0 /out/7z-lzma2-9.7z 20260603.jsonl` · restore: `7z x -y -bd -bb0 /out/7z-lzma2-9.7z` - `7-Zip LZMA2 -mx=9, single thread`: `7z a -t7z -m0=lzma2 -mx=9 -ms=on -mmt=1 -bd -bb0 /out/7z-lzma2-9-1t.7z 20260603.jsonl` · restore: `7z x -y -bd -bb0 /out/7z-lzma2-9-1t.7z` - `7-Zip PPMd -mx=9`: `7z a -t7z -m0=PPMd -mx=9 -ms=on -mmt=1 -bd -bb0 /out/7z-ppmd-9.7z 20260603.jsonl` · restore: `7z x -y -bd -bb0 /out/7z-ppmd-9.7z` - `zpaq -m5`: `zpaq add /out/zpaq-m5.zpaq 20260603.jsonl -m5` · restore: `zpaq extract /out/zpaq-m5.zpaq -to /restore/zpaq-m5` - `RAR5 -m5`: `rar a -ma5 -m5 -idq /out/rar-rar5-m5.rar 20260603.jsonl` · restore: `rar x -idq -y /out/rar-rar5-m5.rar` ## Limitations - One dataset, one capture, one build. The private content is not published; the identity above lets a future run on the same bytes be recognized, not reproduced by third parties. - Timings are single sequential runs on the laboratory host under an exclusive quiesced lease and carry no repetition statistics; they are indicative observations, not release performance evidence. - The comparator set is the laboratory's fourteen world baselines at strong settings; other tools, settings, or preprocessing (for example columnar conversion) were not tested. - Verification compared restored bytes with the source. It did not compare filesystem metadata, which the comparators handle differently by design. - The fast objective is reported for completeness; its qualified creation-time benefit was measured in the NIGHTMARKET campaign on other corpora and is not re-measured here.