Parsr is slow also for small files and without (or with few) modules

[blenzi]

Following the discussion on #510, I am testing Parsr also for small files and without (or with few) modules. With README.pdf provided in the samples (8 pages):

[2022-10-24T16:39:19] INFO  (parsr-api/7 on 32b79c3646c1): Using extractor: PDFJsExtractor
[2022-10-24T16:39:19] INFO  (parsr-api/7 on 32b79c3646c1): Running extractor PDF.js
[2022-10-24T16:39:19] INFO  (parsr-api/7 on 32b79c3646c1): executing command: qpdf --decrypt --no-warn /tmp/f2f1cf2c1053576eca2a6acd83e045/a02a5859e0d4634f2e54dd4cb23680.pdf /tmp/0fa7abe3f0b24684eccaef72eb454f.pdf
[2022-10-24T16:39:19] INFO  (parsr-api/7 on 32b79c3646c1): Qpdf repair succeed --> /tmp/0fa7abe3f0b24684eccaef72eb454f.pdf
[2022-10-24T16:39:19] INFO  (parsr-api/7 on 32b79c3646c1): executing command: mutool clean -g /tmp/0fa7abe3f0b24684eccaef72eb454f.pdf /tmp/c2003b6514e0b99f4dba757b46a3dc.pdf
[2022-10-24T16:39:19] INFO  (parsr-api/7 on 32b79c3646c1): Mutool clean succeed --> /tmp/c2003b6514e0b99f4dba757b46a3dc.pdf
[2022-10-24T16:39:21] INFO  (parsr-api/7 on 32b79c3646c1): Elapsed time: 1.428s
[2022-10-24T16:39:21] INFO  (parsr-api/7 on 32b79c3646c1): Exporting json...
[2022-10-24T16:39:21] INFO  (parsr-api/7 on 32b79c3646c1): Writing file: /tmp/ba66b32a7782915beef6706b8fdc9a.json
[2022-10-24T16:39:21] INFO  (parsr-api/7 on 32b79c3646c1): Running cleaner...
[2022-10-24T16:39:21] INFO  (parsr-api/7 on 32b79c3646c1): Running module: OutOfPageRemovalModule, Options: {}
[2022-10-24T16:39:21] INFO  (parsr-api/7 on 32b79c3646c1):   Elapsed time: 0.005s
[2022-10-24T16:39:21] INFO  (parsr-api/7 on 32b79c3646c1): Running module: WhitespaceRemovalModule, Options: {"minWidth":0}
[2022-10-24T16:39:21] INFO  (parsr-api/7 on 32b79c3646c1):   Elapsed time: 0.02s
[2022-10-24T16:39:21] INFO  (parsr-api/7 on 32b79c3646c1): Running module: RedundancyDetectionModule, Options: {"minOverlap":0.5}
[2022-10-24T16:39:21] INFO  (parsr-api/7 on 32b79c3646c1):   Elapsed time: 0.073s
[2022-10-24T16:39:21] INFO  (parsr-api/7 on 32b79c3646c1): Running module: HeaderFooterDetectionModule, Options: {"ignorePages":[],"maxMarginPercentage":15,"similaritySizePercentage":10}
[2022-10-24T16:39:21] INFO  (parsr-api/7 on 32b79c3646c1): Detecting marginals (headers and footers) with maxMarginPercentage: 15 ...
[2022-10-24T16:39:21] INFO  (parsr-api/7 on 32b79c3646c1): Document margins for maxMarginPercentage 15: top: 125, bottom: 715, left: undefined, right: 559
[2022-10-24T16:39:21] INFO  (parsr-api/7 on 32b79c3646c1):   Elapsed time: 0.013s
[2022-10-24T16:39:21] INFO  (parsr-api/7 on 32b79c3646c1): Running module: ReadingOrderDetectionModule, Options: {"minVerticalGapWidth":5,"minColumnWidthInPagePercent":15}
[2022-10-24T16:39:21] INFO  (parsr-api/7 on 32b79c3646c1):   Elapsed time: 0.07s
[2022-10-24T16:39:21] INFO  (parsr-api/7 on 32b79c3646c1): Total elapsed time: 0.184s

The first stage already takes 1.5s. The total time to invoke the API and retrieve the done status is over 4s. As a comparison, PyMuPDF takes about 40 ms. For a 40-page document the numbers are 10s vs 200 ms. Any idea how to speed it up? The config is below:

[2022-10-24T16:39:19] INFO  (parsr-api/7 on 32b79c3646c1): Config {
  version: 0.9,
  cleaner: [
    'out-of-page-removal',
    'whitespace-removal',
    'redundancy-detection',
    [
      'header-footer-detection',
      [Object]
    ],
    [
      'reading-order-detection',
      [Object]
    ]
  ],
  extractor: {
    pdf: 'pdfjs',
    ocr: 'tesseract',
    language: [
      'en'
    ]
  },
  output: {
    granularity: 'word',
    includeMarginals: true,
    includeDrawings: false,
    formats: {
      json: true,
      text: false,
      csv: false,
      markdown: false,
      pdf: false
    }
  }
}

[BinaryBrain]

It seems you have some overhead somewhere else since the total elapsed time is way less than 4s.
What is your pipeline and how do you call Parsr's API?

[blenzi]

In order to time the full operation I am using the python client in a jupyter notebook:

%%timeit -n1 -r1

parsr.send_document(
                    file_path=pdf_file, 
                    config_path='/tmp/parsr_config.json', 
                    document_name='Test',
                    save_request_id=True)

while 'progress-percentage' in parsr.get_status()['server_response']:
    time.sleep(0.1)

The client is instantiated with

from parsr_client import ParsrClient
parsr = ParsrClient('localhost:3001')

and the API is running via its docker image.