Hi Russel, Here is the collection that I'm copying in my tests. (It's a random assortment of the pages in my mahara.org account). Maybe testing with this will help? Or maybe your computer is just too good? ;) On my local machine it took 100 concurrent users copying the collection before I had issues, whereas on the client test server I did further testing on, it only took 10 concurrent users. So, the environment details certainly seem to make a difference.
Cheers, Aaron ** Attachment added: "collection2.zip" https://bugs.launchpad.net/mahara/+bug/1514608/+attachment/4520979/+files/collection2.zip -- You received this bug notification because you are a member of Mahara Contributors, which is subscribed to Mahara. Matching subscriptions: Subscription for all Mahara Contributors -- please ask on #mahara-dev or mahara.org forum before editing or unsubscribing it! https://bugs.launchpad.net/bugs/1514608 Title: MySQL deadlock issues with simultaneous users Status in Mahara: In Progress Status in Mahara 1.10 series: In Progress Status in Mahara 15.04 series: In Progress Status in Mahara 15.10 series: In Progress Status in Mahara 16.04 series: In Progress Bug description: The patch in Bug 1492919 resolved the deadlock issues for some users, but others are still reporting that they are getting deadlocks. This seems to be an issue unique to MySQL, and it can happen with as few as 2 or 3 concurrent users. It has been reported across all stable versions. Strangely, it seems to be a relatively recent issue (i.e. we never heard this with Mahara 1.8 or 1.7, etc), so this suggests it was triggered by something that changed fairly recently. One possible candidate is our switch to the mysqli driver (before that Mahara wasn't doing transactions at all, in mysql). See also: * https://mahara.org/interaction/forum/topic.php?id=7309 * https://mahara.org/interaction/forum/topic.php?id=7432 To manage notifications about this bug go to: https://bugs.launchpad.net/mahara/+bug/1514608/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~mahara-contributors Post to : [email protected] Unsubscribe : https://launchpad.net/~mahara-contributors More help : https://help.launchpad.net/ListHelp
