** Changed in: mahara
       Status: New => Invalid

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  SSO from moodle locks server 503 php_slow warnings

Status in Mahara:

Bug description:
  When doing many (15 pupils) simultaneous switches/logins from moodle
  to Mahara (Mahoodle installation, 3.0+ and 15.10.1) server locks until
  producing a 503 error and logging into php_slow.log:

  [16-Dec-2015 08:42:29]  [pool e48616] pid 13050
  script_filename = /data/web/e48616/html/mahara/htdocs/auth/xmlrpc/land.php
  [0x00007f1abf912228] curl_exec() 
  [0x00007f1abf911f98] mahara_http_request() 
  [0x00007f1abf911b98] send() 
  [0x00007f1abf9119d0] request_user_authorise() 

  These messages are repeated for many processes and make the two pages
  (Mahara/Moodle) unavailable for minutes. Most of the time a Apache 503
  error ist produced: - - [16/Dec/2015:08:44:06 +0000] mahara.klocker-mark.at
  .klocker-mark.at&wantsurl= HTTP/1.1" 503 0 "-" "Mozilla/5.0 (Windows
  NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko)
  Chrome/47.0.2526.80 Safari/537.36"

  The system is practically unusable with multiple pupils at the same

  I don't know exactly the server versions as I am on a remote server.

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