Is there any update on this? Do we have any recommendations now on how many workers can run on a server?
On Tue, Oct 10, 2017 at 5:00 AM Andrew Godwin <[email protected]> wrote: > I don't have enough hard data to give a recommendation, unfortunately. > > Andrew > > On Mon, Oct 9, 2017 at 7:14 PM, Piet van Leeuwen <[email protected]> > wrote: > >> On a server is there a recommendation for how many workers to have >> running? >> >> With Gunicorn we would run... >> >> def max_workers(): >> return cpu_count() * 2 + 1 >> >> >> >> >> On Thursday, February 9, 2017 at 11:38:07 AM UTC+13, Andrew Godwin wrote: >>> >>> The difference is mostly in Python performance - threading in Python >>> tends to perform worse than using multiple processes, which is why we >>> recommend using multiple processes in the docs. However, you can save a bit >>> of memory usage with threading, so you can use that if you want. >>> >>> I would not, however, recommend running more than 2 - 4 threads per >>> process, as otherwise you'll likely see performance take a slide due to the >>> GIL. >>> >>> Andrew >>> >>> On Wed, Feb 8, 2017 at 11:53 AM, Charlie DeTar <[email protected]> wrote: >>> >>>> What's the best way to launch multiple Django channels workers on a >>>> production server to take advantage of extra cores? >>>> >>>> The documentation says >>>> <https://channels.readthedocs.io/en/stable/deploying.html#run-worker-servers> >>>> : >>>> >>>> Each server is single-threaded, so it’s recommended you run around one >>>>> or two per core on each machine; it’s safe to run as many concurrent >>>>> workers on the same machine as you like, as they don’t open any ports (all >>>>> they do is talk to the channel backend). >>>> >>>> >>>> However, `python manage.py help runworker` lists a "--threads" option, >>>> which seems to imply that a single invocation of runworker can launch >>>> multiple workers. >>>> >>>> Is there a functional difference between `./manage.py runworker >>>> --threads 4` and launching `./manage.py runworker` process 4 times? >>>> >>>> best, >>>> Charlie >>>> >>>> -- >>>> You received this message because you are subscribed to the Google >>>> Groups "Django users" group. >>>> To unsubscribe from this group and stop receiving emails from it, send >>>> an email to [email protected]. >>>> To post to this group, send email to [email protected]. >>>> Visit this group at https://groups.google.com/group/django-users. >>>> To view this discussion on the web visit >>>> https://groups.google.com/d/msgid/django-users/8097b8f7-3f89-49a6-b189-58a0713972ef%40googlegroups.com >>>> <https://groups.google.com/d/msgid/django-users/8097b8f7-3f89-49a6-b189-58a0713972ef%40googlegroups.com?utm_medium=email&utm_source=footer> >>>> . >>>> For more options, visit https://groups.google.com/d/optout. >>>> >>> >>> -- >> You received this message because you are subscribed to the Google Groups >> "Django users" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected]. >> To post to this group, send email to [email protected]. >> Visit this group at https://groups.google.com/group/django-users. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/django-users/96819d5d-cb83-4e11-af79-3c69b16f8b3b%40googlegroups.com >> <https://groups.google.com/d/msgid/django-users/96819d5d-cb83-4e11-af79-3c69b16f8b3b%40googlegroups.com?utm_medium=email&utm_source=footer> >> . >> >> For more options, visit https://groups.google.com/d/optout. >> > > -- > You received this message because you are subscribed to the Google Groups > "Django users" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To post to this group, send email to [email protected]. > Visit this group at https://groups.google.com/group/django-users. > To view this discussion on the web visit > https://groups.google.com/d/msgid/django-users/CAFwN1upDm3iJDCgOWMqkB8od8NKCpBhhH73GqvrjsYTRn3ow9g%40mail.gmail.com > <https://groups.google.com/d/msgid/django-users/CAFwN1upDm3iJDCgOWMqkB8od8NKCpBhhH73GqvrjsYTRn3ow9g%40mail.gmail.com?utm_medium=email&utm_source=footer> > . > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "Django users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/django-users/CAPuMScqLwABtPFChbzKdG-LydF0XxtDjU-%2B4cZvZuVxCk5LMNw%40mail.gmail.com.
