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docs: OpenStream benchmark report for nixamp 0.24.2
Manual publish of the report attached to the nixamp v0.24.2 release (openstream-report-0.24.2.json/.md). The release workflow's publish-report job skipped because LOGICSRC_PUBLISH_TOKEN is not set on profullstack/nixamp. Built-in synthetic corpus, so the id carries the -synthetic label per docs/openstream/reports/README.md. Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_015uheT4Gn9BBKAnSZGcabyN
This commit is contained in:
Anthony Ettinger
parent
519d13c3d6
commit
9fda3973f6
2 changed files with 831 additions and 0 deletions
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docs/openstream/reports/2026-09-13-nixamp-0.24.2-synthetic.json
Normal file
793
docs/openstream/reports/2026-09-13-nixamp-0.24.2-synthetic.json
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@ -0,0 +1,793 @@
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"savingsPercent": -0.03,
|
||||
"encodeMs": 22.3,
|
||||
"decodeMs": 0,
|
||||
"roundTrip": true
|
||||
},
|
||||
{
|
||||
"mode": "ts-zstd",
|
||||
"level": 1,
|
||||
"blocks": 3,
|
||||
"inputBytes": 752000,
|
||||
"payloadBytes": 752000,
|
||||
"wireBytes": 752208,
|
||||
"storedBlocks": 3,
|
||||
"compressedBlocks": 0,
|
||||
"savingsPercent": -0.03,
|
||||
"encodeMs": 3.3,
|
||||
"decodeMs": 0,
|
||||
"roundTrip": true
|
||||
}
|
||||
],
|
||||
"recommendation": {
|
||||
"mode": "stored",
|
||||
"level": 0,
|
||||
"reason": "no codec beat stored by the configured margin"
|
||||
}
|
||||
},
|
||||
{
|
||||
"sample": "tiny-3b",
|
||||
"kind": "synthetic",
|
||||
"inputBytes": 3,
|
||||
"sha256": "ba7816bf8f01cfea414140de5dae2223b00361a396177a9cb410ff61f20015ad",
|
||||
"container": "bytes",
|
||||
"rows": [
|
||||
{
|
||||
"mode": "stored",
|
||||
"level": 0,
|
||||
"blocks": 1,
|
||||
"inputBytes": 3,
|
||||
"payloadBytes": 3,
|
||||
"wireBytes": 115,
|
||||
"storedBlocks": 1,
|
||||
"compressedBlocks": 0,
|
||||
"savingsPercent": -3733.33,
|
||||
"encodeMs": 0,
|
||||
"decodeMs": 0,
|
||||
"roundTrip": true
|
||||
},
|
||||
{
|
||||
"mode": "gzip",
|
||||
"level": 6,
|
||||
"blocks": 1,
|
||||
"inputBytes": 3,
|
||||
"payloadBytes": 3,
|
||||
"wireBytes": 115,
|
||||
"storedBlocks": 1,
|
||||
"compressedBlocks": 0,
|
||||
"savingsPercent": -3733.33,
|
||||
"encodeMs": 0.17,
|
||||
"decodeMs": 0,
|
||||
"roundTrip": true
|
||||
},
|
||||
{
|
||||
"mode": "zstd",
|
||||
"level": 1,
|
||||
"blocks": 1,
|
||||
"inputBytes": 3,
|
||||
"payloadBytes": 3,
|
||||
"wireBytes": 115,
|
||||
"storedBlocks": 1,
|
||||
"compressedBlocks": 0,
|
||||
"savingsPercent": -3733.33,
|
||||
"encodeMs": 0.11,
|
||||
"decodeMs": 0,
|
||||
"roundTrip": true
|
||||
},
|
||||
{
|
||||
"mode": "zstd",
|
||||
"level": 3,
|
||||
"blocks": 1,
|
||||
"inputBytes": 3,
|
||||
"payloadBytes": 3,
|
||||
"wireBytes": 115,
|
||||
"storedBlocks": 1,
|
||||
"compressedBlocks": 0,
|
||||
"savingsPercent": -3733.33,
|
||||
"encodeMs": 0.13,
|
||||
"decodeMs": 0,
|
||||
"roundTrip": true
|
||||
},
|
||||
{
|
||||
"mode": "zstd",
|
||||
"level": 9,
|
||||
"blocks": 1,
|
||||
"inputBytes": 3,
|
||||
"payloadBytes": 3,
|
||||
"wireBytes": 115,
|
||||
"storedBlocks": 1,
|
||||
"compressedBlocks": 0,
|
||||
"savingsPercent": -3733.33,
|
||||
"encodeMs": 0.6,
|
||||
"decodeMs": 0,
|
||||
"roundTrip": true
|
||||
},
|
||||
{
|
||||
"mode": "ts-zstd",
|
||||
"level": 1,
|
||||
"blocks": 1,
|
||||
"inputBytes": 3,
|
||||
"payloadBytes": 0,
|
||||
"wireBytes": 64,
|
||||
"storedBlocks": 0,
|
||||
"compressedBlocks": 0,
|
||||
"savingsPercent": -2033.33,
|
||||
"encodeMs": 0,
|
||||
"decodeMs": 0,
|
||||
"roundTrip": false,
|
||||
"note": "not a transport stream: ts-zstd does not apply"
|
||||
}
|
||||
],
|
||||
"recommendation": {
|
||||
"mode": "stored",
|
||||
"level": 0,
|
||||
"reason": "no codec beat stored by the configured margin"
|
||||
}
|
||||
},
|
||||
{
|
||||
"sample": "empty",
|
||||
"kind": "synthetic",
|
||||
"inputBytes": 0,
|
||||
"sha256": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
|
||||
"container": "bytes",
|
||||
"rows": [
|
||||
{
|
||||
"mode": "stored",
|
||||
"level": 0,
|
||||
"blocks": 0,
|
||||
"inputBytes": 0,
|
||||
"payloadBytes": 0,
|
||||
"wireBytes": 64,
|
||||
"storedBlocks": 0,
|
||||
"compressedBlocks": 0,
|
||||
"savingsPercent": 0,
|
||||
"encodeMs": 0,
|
||||
"decodeMs": 0,
|
||||
"roundTrip": true
|
||||
},
|
||||
{
|
||||
"mode": "gzip",
|
||||
"level": 6,
|
||||
"blocks": 0,
|
||||
"inputBytes": 0,
|
||||
"payloadBytes": 0,
|
||||
"wireBytes": 64,
|
||||
"storedBlocks": 0,
|
||||
"compressedBlocks": 0,
|
||||
"savingsPercent": 0,
|
||||
"encodeMs": 0,
|
||||
"decodeMs": 0,
|
||||
"roundTrip": true
|
||||
},
|
||||
{
|
||||
"mode": "zstd",
|
||||
"level": 1,
|
||||
"blocks": 0,
|
||||
"inputBytes": 0,
|
||||
"payloadBytes": 0,
|
||||
"wireBytes": 64,
|
||||
"storedBlocks": 0,
|
||||
"compressedBlocks": 0,
|
||||
"savingsPercent": 0,
|
||||
"encodeMs": 0,
|
||||
"decodeMs": 0,
|
||||
"roundTrip": true
|
||||
},
|
||||
{
|
||||
"mode": "zstd",
|
||||
"level": 3,
|
||||
"blocks": 0,
|
||||
"inputBytes": 0,
|
||||
"payloadBytes": 0,
|
||||
"wireBytes": 64,
|
||||
"storedBlocks": 0,
|
||||
"compressedBlocks": 0,
|
||||
"savingsPercent": 0,
|
||||
"encodeMs": 0,
|
||||
"decodeMs": 0,
|
||||
"roundTrip": true
|
||||
},
|
||||
{
|
||||
"mode": "zstd",
|
||||
"level": 9,
|
||||
"blocks": 0,
|
||||
"inputBytes": 0,
|
||||
"payloadBytes": 0,
|
||||
"wireBytes": 64,
|
||||
"storedBlocks": 0,
|
||||
"compressedBlocks": 0,
|
||||
"savingsPercent": 0,
|
||||
"encodeMs": 0,
|
||||
"decodeMs": 0,
|
||||
"roundTrip": true
|
||||
},
|
||||
{
|
||||
"mode": "ts-zstd",
|
||||
"level": 1,
|
||||
"blocks": 0,
|
||||
"inputBytes": 0,
|
||||
"payloadBytes": 0,
|
||||
"wireBytes": 64,
|
||||
"storedBlocks": 0,
|
||||
"compressedBlocks": 0,
|
||||
"savingsPercent": 0,
|
||||
"encodeMs": 0,
|
||||
"decodeMs": 0,
|
||||
"roundTrip": true
|
||||
}
|
||||
],
|
||||
"recommendation": {
|
||||
"mode": "stored",
|
||||
"level": 0,
|
||||
"reason": "no codec beat stored by the configured margin"
|
||||
}
|
||||
}
|
||||
],
|
||||
"summary": {
|
||||
"corpusBytes": 4649731,
|
||||
"byMode": [
|
||||
{
|
||||
"mode": "stored",
|
||||
"level": 0,
|
||||
"wireBytes": 4651091,
|
||||
"savingsPercent": -0.03,
|
||||
"roundTrip": true,
|
||||
"encodeMs": 0,
|
||||
"decodeMs": 0
|
||||
},
|
||||
{
|
||||
"mode": "gzip",
|
||||
"level": 6,
|
||||
"wireBytes": 2185882,
|
||||
"savingsPercent": 52.99,
|
||||
"roundTrip": true,
|
||||
"encodeMs": 57.09,
|
||||
"decodeMs": 10.94
|
||||
},
|
||||
{
|
||||
"mode": "zstd",
|
||||
"level": 1,
|
||||
"wireBytes": 2180173,
|
||||
"savingsPercent": 53.11,
|
||||
"roundTrip": true,
|
||||
"encodeMs": 14.55,
|
||||
"decodeMs": 9.62
|
||||
},
|
||||
{
|
||||
"mode": "zstd",
|
||||
"level": 3,
|
||||
"wireBytes": 2178281,
|
||||
"savingsPercent": 53.15,
|
||||
"roundTrip": true,
|
||||
"encodeMs": 12.8,
|
||||
"decodeMs": 8.59
|
||||
},
|
||||
{
|
||||
"mode": "zstd",
|
||||
"level": 9,
|
||||
"wireBytes": 2178204,
|
||||
"savingsPercent": 53.15,
|
||||
"roundTrip": true,
|
||||
"encodeMs": 53.79,
|
||||
"decodeMs": 8.85
|
||||
},
|
||||
{
|
||||
"mode": "ts-zstd",
|
||||
"level": 1,
|
||||
"wireBytes": 1127952,
|
||||
"savingsPercent": 25,
|
||||
"roundTrip": true,
|
||||
"encodeMs": 9.27,
|
||||
"decodeMs": 4.87
|
||||
}
|
||||
]
|
||||
},
|
||||
"caveats": [
|
||||
"Envelope v1: a 16-byte stream header, a 48-byte header per frame, plus one end frame.",
|
||||
"OpenStream is a framing envelope over Zstandard and gzip, not a new compression algorithm; these numbers are those codecs at the block boundary, honestly framed.",
|
||||
"Synthetic samples do not predict production savings. A padded transport stream flatters a codec by its padding; an efficient real feed saves far less. Use --corpus with authorized real samples for numbers that mean something.",
|
||||
"Timings are wall-clock on the machine and runtime named in `environment` and do not transfer to other hardware.",
|
||||
"roundTrip:false in any row is a failure of exactness and must block a release."
|
||||
]
|
||||
}
|
||||
|
|
@ -0,0 +1,38 @@
|
|||
# OpenStream benchmark — nixamp 0.24.2
|
||||
|
||||
Generated 2026-09-13T09:48:49.844Z · envelope NXS1 · schema 1
|
||||
|
||||
**Environment.** node v24.20.0, zstd 1.5.7, zlib 1.3.2.1-motley-42c2f19, on linux 6.17.0-1022-azure x64, 4× INTEL(R) XEON(R) PLATINUM 8573C, 15.6 GiB.
|
||||
|
||||
**Policy.** block 262144 B; eligible at 3% and 512 B; zstd levels 1, 3, 9.
|
||||
|
||||
## Corpus
|
||||
|
||||
| sample | kind | bytes | container | best mode | saves |
|
||||
| --- | --- | ---: | --- | --- | ---: |
|
||||
| random-1mib | synthetic | 1048576 | bytes | stored | stored |
|
||||
| zeros-1mib | synthetic | 1048576 | bytes | zstd L9 | 99.97% |
|
||||
| text-repeat-1mib | synthetic | 1048576 | bytes | zstd L1 | 99.95% |
|
||||
| ts-padded-50pct | synthetic | 752000 | mpegts | ts-zstd L1 | 50.04% |
|
||||
| ts-unpadded | synthetic | 752000 | mpegts | stored | stored |
|
||||
| tiny-3b | synthetic | 3 | bytes | stored | stored |
|
||||
| empty | synthetic | 0 | bytes | stored | stored |
|
||||
|
||||
## Aggregate, per mode across the corpus
|
||||
|
||||
| mode | wire bytes | saving | enc ms | dec ms | round trip |
|
||||
| --- | ---: | ---: | ---: | ---: | --- |
|
||||
| stored | 4651091 | -0.03% | 0 | 0 | ok |
|
||||
| gzip L6 | 2185882 | +52.99% | 57.09 | 10.94 | ok |
|
||||
| zstd L1 | 2180173 | +53.11% | 14.55 | 9.62 | ok |
|
||||
| zstd L3 | 2178281 | +53.15% | 12.8 | 8.59 | ok |
|
||||
| zstd L9 | 2178204 | +53.15% | 53.79 | 8.85 | ok |
|
||||
| ts-zstd L1 | 1127952 | +25% | 9.27 | 4.87 | ok |
|
||||
|
||||
## Caveats
|
||||
|
||||
- Envelope v1: a 16-byte stream header, a 48-byte header per frame, plus one end frame.
|
||||
- OpenStream is a framing envelope over Zstandard and gzip, not a new compression algorithm; these numbers are those codecs at the block boundary, honestly framed.
|
||||
- Synthetic samples do not predict production savings. A padded transport stream flatters a codec by its padding; an efficient real feed saves far less. Use --corpus with authorized real samples for numbers that mean something.
|
||||
- Timings are wall-clock on the machine and runtime named in `environment` and do not transfer to other hardware.
|
||||
- roundTrip:false in any row is a failure of exactness and must block a release.
|
||||
Loading…
Add table
Add a link
Reference in a new issue