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tesseract jobs_limit(2)

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At least on macOS with my quadcore performance improves with two
tesseracts in parallel (20% gain). Hard to say how this will affect
Linux, but stepping up to 2 jobs seems justifiable.
This commit is contained in:
James R. Barlow
2017-01-27 18:13:12 -08:00
parent a6feacc810
commit 99afebd033
1 changed files with 3 additions and 3 deletions
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ocrmypdf/pipeline.py
+3 -3
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@@ -948,7 +948,7 @@ def build_pipeline(options, work_folder, log, context):
task_ocr_tesseract_hocr.graphviz(fillcolor='"#00cc66"')
task_ocr_tesseract_hocr.active_if(options.pdf_renderer == 'hocr')
if tesseract.v4():
task_ocr_tesseract_hocr.jobs_limit(1) # Uses multi-core on its own
task_ocr_tesseract_hocr.jobs_limit(2) # Uses multi-core on its own
task_select_visible_page_image = main_pipeline.collate(
task_func=select_visible_page_image,
@@ -1001,7 +1001,7 @@ def build_pipeline(options, work_folder, log, context):
task_ocr_tesseract_textonly_pdf.graphviz(fillcolor='"#ff69b4"')
task_ocr_tesseract_textonly_pdf.active_if(options.pdf_renderer == 'tess4')
if tesseract.v4():
task_ocr_tesseract_textonly_pdf.jobs_limit(1)
task_ocr_tesseract_textonly_pdf.jobs_limit(2)
task_combine_layers = main_pipeline.collate(
task_func=combine_layers,
@@ -1024,7 +1024,7 @@ def build_pipeline(options, work_folder, log, context):
task_ocr_tesseract_and_render_pdf.graphviz(fillcolor='"#66ccff"')
task_ocr_tesseract_and_render_pdf.active_if(options.pdf_renderer == 'tesseract')
if tesseract.v4():
task_ocr_tesseract_and_render_pdf.jobs_limit(1) # Uses multi-core
task_ocr_tesseract_and_render_pdf.jobs_limit(2) # Uses multi-core
# PDF/A
task_generate_postscript_stub = main_pipeline.transform(