What is your current mod_wsgi configuration? How long is typical request response time?
Are the requests high CPU activities, or I/O bound waiting on a backend service like a database? > On 3 Jan 2019, at 2:12 am, Mahesh Vernekar <mahesh.verne...@gmail.com> wrote: > > We are hosting a web application with configuration as below: > Application: Apache 2.4 / Python 3.4 / Django 2.0 > > Database servers x 6 : 32 GB / 8 cores behind load balancer > Web servers x 6 : 4 GB / 2 cores behind load balancer > > Setup is in AWS so we are using AWS-Elastic load balancer. > > The application supports 2000 concurrent connections but failing for 2500 and > beyond. > In load testing around 1800 requests are failing out of 3.5 lakh total > requests. > > In the apache error log we are seeing the error message as below ? > > [Wed Jan 02 14:05:53.349209 2019] [wsgi:error] [pid 21559:tid > 139722408036096] (11)Resource temporarily unavailable: [client > 172.31.12.61:51748] mod_wsgi (pid=21559): Unable to connect to WSGI daemon > process 'pe-ta-dev.knowdl.com <http://pe-ta-dev.knowdl.com/>' on > '/run/httpd/wsgi.21472.0.1.sock' after multiple attempts as listener backlog > limit was exceeded or the socket does not exist. > > > Any idea how we can resolve the issue ? > > > > Regards > > Mahesh > > -- > 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 modwsgi+unsubscr...@googlegroups.com > <mailto:modwsgi+unsubscr...@googlegroups.com>. > To post to this group, send email to modwsgi@googlegroups.com > <mailto:modwsgi@googlegroups.com>. > Visit this group at https://groups.google.com/group/modwsgi > <https://groups.google.com/group/modwsgi>. > For more options, visit https://groups.google.com/d/optout > <https://groups.google.com/d/optout>. -- 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 modwsgi+unsubscr...@googlegroups.com. To post to this group, send email to modwsgi@googlegroups.com. Visit this group at https://groups.google.com/group/modwsgi. For more options, visit https://groups.google.com/d/optout.
