What about request throughput? That is, requests/sec it current handles, and how many concurrent requests at a time.
Graham > On 5 Dec 2020, at 8:35 pm, Zohaib Ahmed Hassan <[email protected]> > wrote: > > Thanks for the response here are details > 1 mod_wsgi version is 4.5.7 > 2 its used as embedded mode > 3 basically this app get images in request and crop those images and return , > average time it took is around 3 to 5 seconds > > On Sat, Dec 5, 2020 at 10:22 AM Graham Dumpleton <[email protected] > <mailto:[email protected]>> wrote: > Also, in addition to what I already asked, what version of mod_wsgi is being > used? > > Graham > >> On 5 Dec 2020, at 4:18 pm, Graham Dumpleton <[email protected] >> <mailto:[email protected]>> wrote: >> >> What is the mod_wsgi part of the Apache configuration? >> >> Need to know if you are using embedded mode or daemon mode and how it is set >> up. >> >> Also, what is the request throughput to the Django application and what is >> average and worst case response times? >> >> Graham >> >>> On 5 Dec 2020, at 3:19 pm, Zohaib Ahmed Hassan >>> <[email protected] <mailto:[email protected]>> wrote: >>> >>> We have an ec2 instance 4vcpu and 16gb of ram which is running Apache >>> server with mpm event behind an aws ELB (application load balancer). This >>> server serve just Images requested by our other applications although for >>> most of application we are uasing cloudfront for caching but one app is >>> directly sending request on server . Now Apache memory usage reached to >>> 70% every day but it did not come down we have to restart server every >>> time. Earier will old Apache 2.2 version and worker mpm without load >>> balncer we were not having this issue. I have tried different configuration >>> for MPM EVENT and Apache but its not working. Here is apache2.conf >>> >>> >>> Timeout 120 # also tried the timeout with 300 >>> KeepAlive On >>> MaxKeepAliveRequests 100 >>> KeepAliveTimeout 45 # varies this setting from 1 seconds to 300 >>> >>> >>> Here is load balancer setting >>> >>> - Http and https listener >>> >>> - Idle timeout is 30 >>> >>> Mpm event >>> >>> <IfModule mpm_event_module> >>> StartServers 2 >>> MinSpareThreads 50 >>> MaxSpareThreads 75 >>> ThreadLimit 64 >>> #ServerLimit 400 >>> ThreadsPerChild 25 >>> MaxRequestWorkers 400 >>> MaxConnectionsPerChild 10000 >>> </IfModule> >>> >>> 1. When i change MaxRequestWorkers to 150 with MaxConnectionsPerChild 0 >>> and ram usage reached 47 percent system health checks are failed and new >>> instance is launched by auto scaling group. Seems like worker limit is >>> reached which already happend when this instance was working with 8GB Ram. >>> 2. Our other server which are just running with simple django site and >>> django rest frame apis are working fine with default values for MPM and >>> apache configured on installation. >>> 3. I have also tried the configuration with KeepAliveTimeout equals to 2, >>> 3 and 5 seconds as well but it did not work . >>> 4. I have also follow this link [enter link description here][1] it worked >>> somewhat better but memory usage is not coming down. >>> >>> here is the recent error log >>> >>> [Fri Dec 04 07:45:21.963290 2020] [mpm_event:error] [pid 5232:tid >>> 139782245895104] AH03490: scoreboard is full, not at >>> MaxRequestWorkers.Increase ServerLimit. >>> [Fri Dec 04 07:45:22.964362 2020] [mpm_event:error] [pid 5232:tid >>> 139782245895104] AH03490: scoreboard is full, not at >>> MaxRequestWorkers.Increase ServerLimit. >>> [Fri Dec 04 07:45:23.965432 2020] [mpm_event:error] [pid 5232:tid >>> 139782245895104] AH03490: scoreboard is full, not at >>> MaxRequestWorkers.Increase ServerLimit. >>> [Fri Dec 04 07:45:24.966485 2020] [mpm_event:error] [pid 5232:tid >>> 139782245895104] AH03490: scoreboard is full, not at >>> MaxRequestWorkers.Increase ServerLimit. >>> [Fri Dec 04 07:45:25.967281 2020] [mpm_event:error] [pid 5232:tid >>> 139782245895104] AH03490: scoreboard is full, not at >>> MaxRequestWorkers.Increase ServerLimit. >>> [Fri Dec 04 07:45:26.968328 2020] [mpm_event:error] [pid 5232:tid >>> 139782245895104] AH03490: scoreboard is full, not at >>> MaxRequestWorkers.Increase ServerLimit. >>> [Fri Dec 04 07:45:27.969392 2020] [mpm_event:error] [pid 5232:tid >>> 139782245895104] AH03490: scoreboard is full, not at >>> MaxRequestWorkers.Increase ServerLimit. >>> [Fri Dec 04 07:45:28.970449 2020] [mpm_event:error] [pid 5232:tid >>> 139782245895104] AH03490: scoreboard is full, not at >>> MaxRequestWorkers.Increase ServerLimit. >>> [Fri Dec 04 07:45:29.971505 2020] [mpm_event:error] [pid 5232:tid >>> 139782245895104] AH03490: scoreboard is full, not at >>> MaxRequestWorkers.Increase ServerLimit. >>> [Fri Dec 04 07:45:30.972548 2020] [mpm_event:error] [pid 5232:tid >>> 139782245895104] AH03490: scoreboard is full, not at >>> MaxRequestWorkers.Increase ServerLimit. >>> [Fri Dec 04 07:45:31.973593 2020] [mpm_event:error] [pid 5232:tid >>> 139782245895104] AH03490: scoreboard is full, not at >>> MaxRequestWorkers.Increase ServerLimit. >>> [Fri Dec 04 07:45:32.974644 2020] [mpm_event:error] [pid 5232:tid >>> 139782245895104] AH03490: scoreboard is full, not at >>> MaxRequestWorkers.Increase ServerLimit. >>> [Fri Dec 04 07:45:33.975697 2020] [mpm_event:error] [pid 5232:tid >>> 139782245895104] AH03490: scoreboard is full, not at >>> MaxRequestWorkers.Increase ServerLimit. >>> [Fri Dec 04 07:45:34.976753 2020] [mpm_event:error] [pid 5232:tid >>> 139782245895104] AH03490: scoreboard is full, not at >>> MaxRequestWorkers.Increase ServerLimit. >>> [Fri Dec 04 07:45:35.977818 2020] [mpm_event:error] [pid 5232:tid >>> 139782245895104] AH03490: scoreboard is full, not at >>> MaxRequestWorkers.Increase ServerLimit. >>> >>> top command result >>> >>> >>> >>> >>> >>> 3296 www-data 20 0 3300484 469824 58268 S 0.0 2.9 0:46.46 >>> apache2 >>> 2544 www-data 20 0 3359744 453868 58292 S 0.0 2.8 1:24.53 >>> apache2 >>> 1708 www-data 20 0 3357172 453524 58208 S 0.0 2.8 1:02.85 >>> apache2 >>> 569 www-data 20 0 3290880 444320 57644 S 0.0 2.8 0:37.53 >>> apache2 >>> 3655 www-data 20 0 3346908 440596 58116 S 0.0 2.7 1:03.54 >>> apache2 >>> 2369 www-data 20 0 3290136 428708 58236 S 0.0 2.7 0:35.74 >>> apache2 >>> 3589 www-data 20 0 3291032 382260 58296 S 0.0 2.4 0:50.07 >>> apache2 >>> 4298 www-data 20 0 3151764 372304 59160 S 0.0 2.3 0:18.95 >>> apache2 >>> 4523 www-data 20 0 3140640 310656 58032 S 0.0 1.9 0:07.58 >>> apache2 >>> 4623 www-data 20 0 3139988 242640 57332 S 3.0 1.5 0:03.51 >>> apache2 >>> >>> What is wrong in the configuration that is causing high memory? >>> >>> >>> [1]: >>> https://aws.amazon.com/premiumsupport/knowledge-center/apache-backend-elb/ >>> <https://aws.amazon.com/premiumsupport/knowledge-center/apache-backend-elb/> >>> >>> -- >>> 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/f10fbec6-d2b9-4486-a63b-e1fe80f45ddbn%40googlegroups.com >>> >>> <https://groups.google.com/d/msgid/modwsgi/f10fbec6-d2b9-4486-a63b-e1fe80f45ddbn%40googlegroups.com?utm_medium=email&utm_source=footer>. >> > > > -- > You received this message because you are subscribed to a topic in the Google > Groups "modwsgi" group. > To unsubscribe from this topic, visit > https://groups.google.com/d/topic/modwsgi/9FMOGfbmTgg/unsubscribe > <https://groups.google.com/d/topic/modwsgi/9FMOGfbmTgg/unsubscribe>. > To unsubscribe from this group and all its topics, send an email to > [email protected] > <mailto:[email protected]>. > To view this discussion on the web visit > https://groups.google.com/d/msgid/modwsgi/B006AA7E-E305-4358-AD4A-4EDBE229FA5C%40gmail.com > > <https://groups.google.com/d/msgid/modwsgi/B006AA7E-E305-4358-AD4A-4EDBE229FA5C%40gmail.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] > <mailto:[email protected]>. > To view this discussion on the web visit > https://groups.google.com/d/msgid/modwsgi/CAGxhakKtpo2rRNFy0tLiOaykKep4187nPjZnxJnvLnXeFSxa%3Dg%40mail.gmail.com > > <https://groups.google.com/d/msgid/modwsgi/CAGxhakKtpo2rRNFy0tLiOaykKep4187nPjZnxJnvLnXeFSxa%3Dg%40mail.gmail.com?utm_medium=email&utm_source=footer>. -- You received this message because you are subscribed to the Google Groups "modwsgi" group. 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