I have been struggling with a timeout error in a couple of Drupal 8 sites, which I have not been able to reproduce. When I deploy them into my colleague's production server (a Mac machine), all the Drupal 8 sites are experiencing a page lock up (the browser waits indefinitely). I have not been able to reproduce the error in my machine (running Debian), neither in testing instances in other servers (e.g. a free Pantheon instance). The only clues I have for the moment are:
- The error seems to not occur so often once I disable cron in the Drupal sites. However, if I run cron manually, I have not been able to reproduce it neither.
- This only affects Drupal 8 sites. The rest of the sites (Drupal 7 and many others) are not affected at all.
- The error disappears rebooting Apache. However, only when I do the following combination: "/opt/local/etc/LaunchDaemons/org.macports.apache2/apache2.wrapper stop" & "/opt/local/etc/LaunchDaemons/org.macports.apache2/apache2.wrapper start"
- My colleague suggested me to use "/opt/local/apache2/bin/apachectl graceful" , but in that case, the error does not disappear.
Any ideas on what the issue could be? I am running different versions of Drupal in the sites (8.0.2 and 8.0.5). At https://github.com/CRESS-Surrey/erie_website_code/issues/31#issuecomment-172512374 I have attached as well some captures of the http headers in a successful and unsuccessful request . I am trying to document the issues as well (more information) at that issue and https://github.com/drozas/cecan/issues/23 for the other site.
Thanks a lot!