gunicorn config: add option to disable sendfile about ansible-archivematica-src HOT 5 CLOSED

Far from ideal though since sendfile() is what really makes it performant as the read and write happens within the kernel. Can you share the errors that you experienced? Hopefully we can solve them?

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The error is here:
https://projects.artefactual.com/issues/9874#note-5

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Can you reproduce if you download directly from gunicorn? i.e. bypass nginx proxy - I'm asking because the error seems to happen where sendfile is trying to write to a socket, which should be the one between gunicorn and Nginx, and it seems that Nginx is closing the socket too early.

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New environment variables AM_GUNICORN_SENDFILE (in qa/1.x) and SS_GUNICORN_SENDFILE (in qa/0.x) should do this, e.g.:

AM_GUNICORN_SENDFILE=false
SS_GUNICORN_SENDFILE=true

This is the code that parses the value of the environment string, in case you're wondering how that happens: https://github.com/benoitc/gunicorn/blob/1edf8fcff5cf19e1580a927b10acdedbda2152a0/gunicorn/config.py#L196-L205.

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See also files dashboard.gunicorn-config.py and storage-service.gunicorn-config.py. These are the Gunicorn configuration files that we bundle where AM_GUNICORN_SENDFILE and SS_GUNICORN_SENDFILE are looked up.

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