Before this patch the exported users (to csv file that jmeter consumes)
were all the enrolled users in the test course. And that's ok when the
number of users enrolled match the number of concurrent threads planned
for a jmeter plan (each thread is a user).
But when both numbers don't match, that can lead to the jmeter plan
not behaving as expected, because it iterates over the excessive users
in the file, leading to some users having run 5 loops, others 4...
The only way to make results more consistent is to, always, ensure that
the number of users exported for the plan match the plan size and not
the site size.
And that's what this issue exactly does, restrict the export to the
number of threads that the plan will have. So every user always runs
the very same number of loops.
dirname() is a slow function compared with __DIR__ and using
'/../'. Moodle has a large number of legacy files that are included
each time a page loads and is not able to use an autoloader as it is
functional code. This allows those required includes to perform as
best as possible in this situation.
List of changes:
* New OOP API using PHP namespace \core\session\.
* All handlers now update the sessions table consistently.
* Experimental DB session support in Oracle.
* Full support for session file handler (filesystem locking required).
* New option for alternative session directory.
* Official memcached session handler support.
* Workaround for memcached version with non-functional gc.
* Improved security - forced session id regeneration.
* Improved compatibility with recent PHP releases.
* Fixed borked CSS during install in debug mode.
* Switched to file based sessions in new installs.
* DB session setting disappears if DB does not support sessions.
* DB session setting disappears if session handler specified in config.php.
* Fast purging of sessions used in request only.
* No legacy distinction - file, database and memcached support the same functionality.
* Session handler name included in performance info.
* Fixed user_loggedin and user_loggedout event triggering.
* Other minor bugfixing and improvements.
* Fixed database session segfault if MUC disposed before $DB.
Limitations:
* Session access time is now updated right after session start.
* Support for $CFG->sessionlockloggedinonly was removed.
* First request does not update userid in sessions table.
* The timeouts may break badly if server hosting forces PHP.ini session settings.
* The session GC is a lot slower, we do not rely on external session timeouts.
* There cannot be any hooks triggered at the session write time.
* File and memcached handlers do not support session lock acquire timeouts.
* Some low level PHP session functions can not be used directly in Moodle code.
Moving it to course_backend keeping generic
methods and attributes in backend class.
AMOS BEGIN
MOV [size_0,tool_generator],[coursesize_0,tool_generator]
MOV [size_1,tool_generator],[coursesize_1,tool_generator]
MOV [size_2,tool_generator],[coursesize_2,tool_generator]
MOV [size_3,tool_generator],[coursesize_3,tool_generator]
MOV [size_4,tool_generator],[coursesize_4,tool_generator]
MOV [size_5,tool_generator],[coursesize_5,tool_generator]
AMOS END
Laurent David