Windows Build 577% Slower than Linux Build

[Lee Morton]

Environment

• Tesseract Version: 4.00.00alpha + UB-Mannheim/4.00.00alpha
• Platform: Debian Stretch x64 + Windows 10 Professional x64

Current Behavior:

Identical machine spec with identical workload and tesseract configuration results in consistent 577% slower performance on Windows 10 x64 compared with Debian Stretch x64. Essentially the job takes averagely 18 seconds on the Linux build, and 1 minute 44 seconds on the win build. Has been tested on other machines and fresh installations.

Expected Behavior:

Significantly less than 577% difference in performance.

What could be causing the win build to experience that level of overhead...?

[Tom Morris]

Compiler switches? Debug build vs non-debug build?

What things have you checked so far?

Tom