On Thursday, 31 May 2018 at 19:26:12 UTC, Dr.No wrote:
My application create some HTML which is then converted to PDF by wkhtmltopdf library. I'm trying to figure out how make the PDF generation run parallel, currently, it's running linearly.

It looks like wkhtmltopdf does not support multithreaded use; see here:

https://github.com/wkhtmltopdf/wkhtmltopdf/issues/1711

So, if you want to run the conversions in parallel, you will have to use separate processes.

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