{ "schemaVersion": 1, "createdAt": "2026-09-05T02:58:52.791715+05:30", "method": { "coldRuns": 3, "warmRunsPerScenario": 5, "cpuAffinity": [ 0, 2 ], "audibleThresholdDbfs": -45.0, "audibleWindowMs": 10.0, "coldDefinition": "fresh process from Python entry to first PCM with model files in the OS page cache; process spawn and DAC buffering are excluded", "firstAudibleDefinition": "request to the first 10 ms PCM window at or above -45 dBFS, simulated through an immediate streaming sink; DAC and hardware buffering are excluded", "cancellationDefinition": "a timer requests cancellation 250 ms into the long prompt; latency ends when the generator returns, and callback observation records when native code first offers a cancellation boundary", "voiceComparison": "Official Pocket uses its available 'alba' preset. Both Sherpa Pocket runs use the same loona.wav reference. The official current checkpoint cached on this machine excludes voice cloning, so Pocket quality is same-prompt and same-machine but not same-speaker." }, "system": { "cpu": "12th Gen Intel(R) Core(TM) i7-1255U", "logicalCpuCount": 12, "os": "Linux 7.1.8-200.fc44.x86_64", "machine": "x86_64", "memoryAtStart": { "MemTotal": 16410857472, "MemAvailable": 6191460352, "SwapTotal": 8589930496, "SwapFree": 17293312 }, "memoryAtEnd": { "MemTotal": 16410857472, "MemAvailable": 5751685120, "SwapTotal": 8589930496, "SwapFree": 298729472 }, "loadAverageAtEnd": [ 3.833984375, 4.19384765625, 4.0263671875 ], "cpuFrequenciesKhzAtStart": [ 1909410, 1669317, 1468301, 1386798, 1948646, 1942303, 1303102, 1385942, 1367879, 841826, 1407662, 595872 ], "cpuFrequenciesKhzAtEnd": [ 3158869, 2201871, 2341979, 2371796, 3093516, 2190816, 2380944, 2378027, 2322032, 2088431, 1906333, 2079040 ], "gitCommit": "667670e746533138ffe175d280b72aa93e0b7255" }, "footprint": { "kokoroModel": { "apparentBytes": 215321667, 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Unicode codepoint: \\U+025a.\n/project/sherpa-onnx/csrc/piper-phonemize-lexicon.cc:PiperPhonemesToIdsKokoroOrKitten:261 Skip unknown phonemes. Unicode codepoint: \\U+025a.\n/project/sherpa-onnx/csrc/piper-phonemize-lexicon.cc:PiperPhonemesToIdsKokoroOrKitten:261 Skip unknown phonemes. Unicode codepoint: \\U+025a.\n/project/sherpa-onnx/csrc/piper-phonemize-lexicon.cc:PiperPhonemesToIdsKokoroOrKitten:261 Skip unknown phonemes. Unicode codepoint: \\U+025a.\n/project/sherpa-onnx/csrc/piper-phonemize-lexicon.cc:PiperPhonemesToIdsKokoroOrKitten:261 Skip unknown phonemes. Unicode codepoint: \\U+025a.\n/project/sherpa-onnx/csrc/piper-phonemize-lexicon.cc:PiperPhonemesToIdsKokoroOrKitten:261 Skip unknown phonemes. Unicode codepoint: \\U+025a.\n/project/sherpa-onnx/csrc/piper-phonemize-lexicon.cc:PiperPhonemesToIdsKokoroOrKitten:261 Skip unknown phonemes. Unicode codepoint: \\U+025a.\n/project/sherpa-onnx/csrc/piper-phonemize-lexicon.cc:PiperPhonemesToIdsKokoroOrKitten:261 Skip unknown phonemes. Unicode codepoint: \\U+025a.\n/project/sherpa-onnx/csrc/piper-phonemize-lexicon.cc:PiperPhonemesToIdsKokoroOrKitten:261 Skip unknown phonemes. Unicode codepoint: \\U+025a.\n/project/sherpa-onnx/csrc/piper-phonemize-lexicon.cc:PiperPhonemesToIdsKokoroOrKitten:261 Skip unknown phonemes. Unicode codepoint: \\U+025a.\n/project/sherpa-onnx/csrc/piper-phonemize-lexicon.cc:PiperPhonemesToIdsKokoroOrKitten:261 Skip unknown phonemes. Unicode codepoint: \\U+025a.\n/project/sherpa-onnx/csrc/piper-phonemize-lexicon.cc:PiperPhonemesToIdsKokoroOrKitten:261 Skip unknown phonemes. Unicode codepoint: \\U+025a.\n/project/sherpa-onnx/csrc/piper-phonemize-lexicon.cc:PiperPhonemesToIdsKokoroOrKitten:261 Skip unknown phonemes. Unicode codepoint: \\U+025a.\n/project/sherpa-onnx/csrc/piper-phonemize-lexicon.cc:PiperPhonemesToIdsKokoroOrKitten:261 Skip unknown phonemes. Unicode codepoint: \\U+025a." }, { "engine": "pocket-fp32", "engineVersion": "3.1.0", "python": "3.14.7", "runIndex": 0, "sampleRate": 24000, "baselineMemory": { "rssBytes": 19513344, "peakRssBytes": 19513344, "virtualBytes": 258367488 }, "readyMemory": { "rssBytes": 1091985408, "peakRssBytes": 1091985408, "virtualBytes": 1895510016 }, "commonImportMs": 39.73195899743587, "engineImportMs": 2296.3855309935752, "modelLoadMs": 1231.6501869936474, "voiceLoadMs": 1.1611480149440467, "processToReadyMs": 3605.679903004784, "residentIdleMemory": { "rssBytes": 1219043328, "peakRssBytes": 1246142464, "virtualBytes": 2178863104 }, "releaseMs": 111.30985297495499, "releasedMemory": { "rssBytes": 976011264, "peakRssBytes": 1246142464, "virtualBytes": 1948295168 }, "finalMemory": { "rssBytes": 976011264, "peakRssBytes": 1246142464, "virtualBytes": 1948295168 }, "cancellation": { "requestAfterMs": 250.0, "requestFired": true, "callbackObserved": true, "requestToCallbackMs": 0.8714080031495541, 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Please see https://github.com/pytorch/pytorch/issues/184982 for more information. 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"/home/abstergo/Documents/Jarvis-pockettts-benchmark/benchmarks/tts-candidates/.venv/lib64/python3.14/site-packages/torch/ao/nn/quantized/modules/utils.py:72: UserWarning: torch.quantize_per_tensor, torch.quantize_per_channel and other quantized tensor creation functions that produce tensors with dtype torch.quint8, torch.qint8, and torch.qint32 are deprecated and will be removed in a future PyTorch release. Please see https://github.com/pytorch/pytorch/issues/184982 for more information. (Triggered internally at /__w/pytorch/pytorch/aten/src/ATen/quantized/Quantizer.cpp:111.)\n qweight = torch.quantize_per_tensor(" }, { "engine": "pocket-fp32", "engineVersion": "3.1.0", "python": "3.14.7", "runIndex": 1, "sampleRate": 24000, "baselineMemory": { "rssBytes": 19320832, "peakRssBytes": 19320832, "virtualBytes": 258363392 }, "readyMemory": { "rssBytes": 1091862528, "peakRssBytes": 1091862528, "virtualBytes": 1895510016 }, "commonImportMs": 43.302128004143015, "engineImportMs": 2269.5831150049344, "modelLoadMs": 1639.1557339811698, "voiceLoadMs": 0.6574149883817881, "processToReadyMs": 3990.435437997803, "residentIdleMemory": { "rssBytes": 1208147968, "peakRssBytes": 1208147968, "virtualBytes": 2230079488 }, "releaseMs": 98.973196989391, "releasedMemory": { "rssBytes": 974114816, "peakRssBytes": 1208074240, "virtualBytes": 2004721664 }, "finalMemory": { "rssBytes": 974114816, "peakRssBytes": 1208074240, "virtualBytes": 2004721664 }, "cancellation": { "requestAfterMs": 250.0, "requestFired": true, "callbackObserved": true, "requestToCallbackMs": 13.657106988830492, "requestToReturnMs": 13.698157999897376, "totalMs": 264.2170390172396, "returnedAudioMs": 400.0, "returnedChunkCount": 5, "memoryAfter": { "rssBytes": 1208147968, "peakRssBytes": 1208147968, "virtualBytes": 2230079488 } }, "trials": [ { "scenario": "typical", "phase": "cold", "repetition": 0, "textCharacters": 147, "textWords": 25, "firstChunkMs": 186.1997660016641, "firstChunkAudioMs": 80.0, "firstAudiblePcmMs": 297.0330993349974, "synthesisWallMs": 2456.999977992382, "synthesisCpuMs": 4145.375382000001, "processCpuPercentOfOneCore": 168.71694827556297, "realTimeFactor": 0.28176605252206216, "speedX": 3.549043580832721, "streamPlayoutEndMs": 8906.199766001664, "playoutGapCount": 0, "playoutUnderrunMs": 0.0, "chunkCount": 109, "joinCount": 0, "maximumJoinStep": null, "sampleCount": 209280, "audioDurationMs": 8720.0, "leadingSilenceMs": 110.83333333333333, "trailingSilenceMs": 19.666666666666668, "rmsDbfs": -19.258117446259167, "peakDbfs": -4.218691673258929, "dcOffset": 1.1932607985535505e-05, "clippedSamplePercent": 0.0, "memoryAfter": { "rssBytes": 1135210496, "peakRssBytes": 1202794496, "virtualBytes": 2143449088 }, "firstChunkFromProcessMs": 4176.709152001422, "firstAudibleFromProcessMs": 4287.542485334755 } ], "subprocessWallMs": 7578.998351993505 }, { "engine": "kokoro-current", "engineVersion": "1.13.6", "python": "3.12.9", "runIndex": 1, "sampleRate": 24000, "baselineMemory": { "rssBytes": 22769664, "peakRssBytes": 22769664, "virtualBytes": 272748544 }, "readyMemory": { "rssBytes": 398000128, "peakRssBytes": 438333440, "virtualBytes": 1000583168 }, "commonImportMs": 45.67977300030179, "engineImportMs": 887.2053989907727, "modelLoadMs": 1226.3431909959763, "voiceLoadMs": 0.0, "processToReadyMs": 2178.162902011536, "residentIdleMemory": { "rssBytes": 518610944, "peakRssBytes": 519573504, "virtualBytes": 1193717760 }, "releaseMs": 131.22359800036065, "releasedMemory": { "rssBytes": 180088832, "peakRssBytes": 519573504, "virtualBytes": 996392960 }, "finalMemory": { "rssBytes": 180088832, "peakRssBytes": 519573504, "virtualBytes": 996392960 }, "cancellation": { "requestAfterMs": 250.0, "requestFired": true, "callbackObserved": true, "requestToCallbackMs": 3924.1196509974543, "requestToReturnMs": 3929.596627014689, "totalMs": 4182.732030021725, "returnedAudioMs": 4045.0833333333335, "returnedChunkCount": 1, "memoryAfter": { "rssBytes": 518610944, "peakRssBytes": 519573504, "virtualBytes": 1193717760 } }, "trials": [ { "scenario": "typical", "phase": "cold", "repetition": 0, "textCharacters": 147, "textWords": 25, "firstChunkMs": 1824.7767300053965, "firstChunkAudioMs": 1606.6666666666667, "firstAudiblePcmMs": 1926.4850633387298, "synthesisWallMs": 10142.086811014451, "synthesisCpuMs": 20189.889563, "processCpuPercentOfOneCore": 199.07036825077745, "realTimeFactor": 1.0719511144674236, "speedX": 0.9328783621786979, "streamPlayoutEndMs": 13214.049656686762, "playoutGapCount": 1, "playoutUnderrunMs": 1927.939593348031, "chunkCount": 4, "joinCount": 0, "maximumJoinStep": null, "sampleCount": 227072, "audioDurationMs": 9461.333333333334, "leadingSilenceMs": 101.70833333333333, "trailingSilenceMs": 325.8333333333333, "rmsDbfs": -27.840254962551185, "peakDbfs": -12.762096598652082, "dcOffset": 0.01712792640444402, "clippedSamplePercent": 0.0, "memoryAfter": { "rssBytes": 501886976, "peakRssBytes": 502091776, "virtualBytes": 1117044736 }, "firstChunkFromProcessMs": 4003.029259009054, "firstAudibleFromProcessMs": 4104.737592342387 } ], "subprocessWallMs": 16821.564873011084, "stderrTail": "2026-09-05 02:57:26.711 | INFO | pipecat::54 - \u14da\u160f\u15e2 Pipecat 1.7.0 (Python 3.12.9 (main, Mar 17 2025, 21:01:58) [Clang 20.1.0 ]) \u14da\u160f\u15e2\n/project/sherpa-onnx/csrc/piper-phonemize-lexicon.cc:PiperPhonemesToIdsKokoroOrKitten:261 Skip unknown phonemes. Unicode codepoint: \\U+025a.\n/project/sherpa-onnx/csrc/piper-phonemize-lexicon.cc:PiperPhonemesToIdsKokoroOrKitten:261 Skip unknown phonemes. Unicode codepoint: \\U+025a.\n/project/sherpa-onnx/csrc/piper-phonemize-lexicon.cc:PiperPhonemesToIdsKokoroOrKitten:261 Skip unknown phonemes. Unicode codepoint: \\U+025a." }, { "engine": "pocket-int8", "engineVersion": "3.1.0", "python": "3.14.7", "runIndex": 2, "sampleRate": 24000, "baselineMemory": { "rssBytes": 19443712, "peakRssBytes": 19443712, "virtualBytes": 258363392 }, "readyMemory": { "rssBytes": 889536512, "peakRssBytes": 1187729408, "virtualBytes": 1690886144 }, "commonImportMs": 39.13703799480572, "engineImportMs": 2303.4284810128156, "modelLoadMs": 2151.6582740005106, "voiceLoadMs": 0.7317620038520545, "processToReadyMs": 4529.858605994377, "residentIdleMemory": { "rssBytes": 1041358848, "peakRssBytes": 1187729408, "virtualBytes": 2003279872 }, "releaseMs": 119.23152598319575, "releasedMemory": { "rssBytes": 752463872, "peakRssBytes": 1187729408, "virtualBytes": 1879461888 }, "finalMemory": { "rssBytes": 752463872, "peakRssBytes": 1187729408, "virtualBytes": 1879461888 }, "cancellation": { "requestAfterMs": 250.0, "requestFired": true, "callbackObserved": true, "requestToCallbackMs": 8.562784001696855, "requestToReturnMs": 8.594196988269687, "totalMs": 259.7607699863147, "returnedAudioMs": 800.0, "returnedChunkCount": 10, "memoryAfter": { "rssBytes": 1041358848, "peakRssBytes": 1187729408, "virtualBytes": 2003279872 } }, "trials": [ { "scenario": "typical", "phase": "cold", "repetition": 0, "textCharacters": 147, "textWords": 25, "firstChunkMs": 119.95296800159849, "firstChunkAudioMs": 80.0, "firstAudiblePcmMs": 161.86963466826515, "synthesisWallMs": 2028.3072649908718, "synthesisCpuMs": 3700.6768050000005, "processCpuPercentOfOneCore": 182.45148892747545, "realTimeFactor": 0.23918717747533866, "speedX": 4.180826123520375, "streamPlayoutEndMs": 8599.952968001598, "playoutGapCount": 0, "playoutUnderrunMs": 0.0, "chunkCount": 106, "joinCount": 0, "maximumJoinStep": null, "sampleCount": 203520, "audioDurationMs": 8480.0, "leadingSilenceMs": 41.916666666666664, "trailingSilenceMs": 0.0, "rmsDbfs": -18.715511073836698, "peakDbfs": -4.066217988730616, "dcOffset": 5.099088057155036e-05, "clippedSamplePercent": 0.0, "memoryAfter": { "rssBytes": 979447808, "peakRssBytes": 1187729408, "virtualBytes": 1927745536 }, "firstChunkFromProcessMs": 4649.889564985642, "firstAudibleFromProcessMs": 4691.806231652309 } ], "subprocessWallMs": 7620.280888018897, "stderrTail": "/home/abstergo/Documents/Jarvis-pockettts-benchmark/benchmarks/tts-candidates/.venv/lib64/python3.14/site-packages/torch/ao/nn/quantized/modules/utils.py:72: UserWarning: torch.quantize_per_tensor, torch.quantize_per_channel and other quantized tensor creation functions that produce tensors with dtype torch.quint8, torch.qint8, and torch.qint32 are deprecated and will be removed in a future PyTorch release. Please see https://github.com/pytorch/pytorch/issues/184982 for more information. (Triggered internally at /__w/pytorch/pytorch/aten/src/ATen/quantized/Quantizer.cpp:111.)\n qweight = torch.quantize_per_tensor(" }, { "engine": "pocket-sherpa-int8", "engineVersion": "1.13.6", "python": "3.12.9", "runIndex": 2, "sampleRate": 24000, "baselineMemory": { "rssBytes": 22810624, "peakRssBytes": 22810624, "virtualBytes": 272748544 }, "readyMemory": { "rssBytes": 367677440, "peakRssBytes": 381886464, "virtualBytes": 1127227392 }, "commonImportMs": 50.89625500841066, "engineImportMs": 6.514423002954572, "modelLoadMs": 1074.817392975092, "voiceLoadMs": 3.0638829921372235, "processToReadyMs": 1185.0338479853235, "residentIdleMemory": { "rssBytes": 659009536, "peakRssBytes": 659009536, "virtualBytes": 1638940672 }, "releaseMs": 73.00231800763868, "releasedMemory": { "rssBytes": 70828032, "peakRssBytes": 658710528, "virtualBytes": 993341440 }, "finalMemory": { "rssBytes": 70828032, "peakRssBytes": 658710528, "virtualBytes": 993341440 }, "cancellation": { "requestAfterMs": 250.0, 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Unicode codepoint: \\U+025a.\n/project/sherpa-onnx/csrc/piper-phonemize-lexicon.cc:PiperPhonemesToIdsKokoroOrKitten:261 Skip unknown phonemes. Unicode codepoint: \\U+025a.\n/project/sherpa-onnx/csrc/piper-phonemize-lexicon.cc:PiperPhonemesToIdsKokoroOrKitten:261 Skip unknown phonemes. Unicode codepoint: \\U+025a." }, { "engine": "pocket-fp32", "engineVersion": "3.1.0", "python": "3.14.7", "runIndex": 2, "sampleRate": 24000, "baselineMemory": { "rssBytes": 19369984, "peakRssBytes": 19369984, "virtualBytes": 258363392 }, "readyMemory": { "rssBytes": 1091616768, "peakRssBytes": 1091616768, "virtualBytes": 1895505920 }, "commonImportMs": 67.100889980793, "engineImportMs": 2936.2764949910343, "modelLoadMs": 1377.484862023266, "voiceLoadMs": 0.9508990042377263, "processToReadyMs": 4437.273845018353, "residentIdleMemory": { "rssBytes": 1207918592, "peakRssBytes": 1207918592, "virtualBytes": 2230079488 }, "releaseMs": 142.4012070056051, "releasedMemory": { "rssBytes": 973832192, "peakRssBytes": 1207828480, "virtualBytes": 2004721664 }, "finalMemory": { "rssBytes": 973832192, "peakRssBytes": 1207828480, "virtualBytes": 2004721664 }, "cancellation": { "requestAfterMs": 250.0, "requestFired": true, "callbackObserved": true, "requestToCallbackMs": 8.15221801167354, 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