Fast on Linux but slow on Mac

manuels / hpdf.js

Create PDFs in your browser or nodejs (javascript port of libharu)

http://manuels.github.com/hpdf.js/

zlib License

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Fast on Linux but slow on Mac #15

Closed Mumin closed 7 years ago

Mumin commented 7 years ago

we use hpdf.js serverside in a node.js application. With server running under Linux the PDF generation is fast. Under MacOS Sierra is much slower (5 times I would guess). Machine performance is more or less comparable. Mac activity monitor does not indicate heavy CPU or RAM usage while generating PDF. Any idea what could be the reason for the different behavior?

manuels commented 7 years ago

Sorry, no idea. I guess the underlying question is why is nodejs so much slower on MacOS?

Mumin commented 7 years ago

node is not slow on Mac in general. The rest of the application behaves comparably fast to Linux.

While generating PDFs, It looks like something is waiting. Loadmonitpr shows more or less normal 90% load in the first phase of generation, then a phase where nothing seems to happen and then the write and display phase. aktivitatsanzeige alle prozesse 2017-02-23 08-06-46

Mumin commented 7 years ago

I ran the hpdf.js demos now and they are all pretty fast on Mac as well. So I guess the slowdown is located somewhere else after the pdf generation and hpdf.js is not causing it.