What Apache MPM are you using? What are the MPM settings in Apache? Eg: * https://httpd.apache.org/docs/2.4/mod/event.html <https://httpd.apache.org/docs/2.4/mod/event.html>
Is MaxMemFree directive set in Apache configuration? How much memory does each mod_wsgi daemon process take? How much memory does each normal Apache child process take? Do you have log level set to info so you know how often mod_wsgi daemon processes are getting restarted due to request timeouts? Graham > On 20 Feb 2020, at 8:36 am, Andrew Charles <[email protected]> wrote: > > Upping the processes increases the memory usage quite a lot. I tried 16 procs > and 15 threads and ran out. > > On Monday, February 17, 2020 at 7:13:24 PM UTC-7, Andrew Charles wrote: > Ubuntu 18.04.04 > Apache 2.4.29 (event) > mod_wsgi 4.5.17 > Python 3.6.8 > Django 2.2.10 > > WSGIScriptAlias / ...wsgi.py > WSGIDaemonProcess name processes=8 threads=30 queue-timeout=45 > socket-timeout=60 request-timeout=60 inactivity-timeout=0 startup-timeout=45 > deadlock-timeout=60 graceful-timeout=15 eviction-timeout=0 > python-path=...base/python-home=...virtualenv/ > WSGIProcessGroup name > > > AWS ec2 c5.xlarge 4 CPUs 8GB Mem (ASG autoscaling between 4 and 10 instances) > behind an ELB > Averaging 100,000,000 requests per day (107 mil today) > > We have a few django api endpoints that are very simple, which only hit a > local or separate redis cache, no db hits. We relay data to firehose but use > django-q to offload those tasks. Requests take around 200ms but a fair number > are 400-500ms. The ELB reports the average as 60ms. Each instances uses > between 4-5GB mem. I've been trying to get more performance out of our > instances and reduce our 5XXs. I previously tried 3 processes and the default > (15) threads. I've been researching the best ways to change settings but it > seems like it's unique to every setup and there's no easy rules to follow. > I'm looking for suggestions or at least someone to tell me I'm on the right > track. > > -- > You received this message because you are subscribed to the Google Groups > "modwsgi" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected] > <mailto:[email protected]>. > To view this discussion on the web visit > https://groups.google.com/d/msgid/modwsgi/d52202b0-1641-40ce-a903-f9c5e252223d%40googlegroups.com > > <https://groups.google.com/d/msgid/modwsgi/d52202b0-1641-40ce-a903-f9c5e252223d%40googlegroups.com?utm_medium=email&utm_source=footer>. -- You received this message because you are subscribed to the Google Groups "modwsgi" 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/modwsgi/C84E9592-B3E1-4294-B599-375D75790655%40gmail.com.
