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Message #28829
[Bug 1492919] [NEW] Deadlock issues when 20-30 users copying collections & pages at the same time
Public bug reported:
Multiple users on the forum have reported deadlock issues when there are
many users (20-30) copying pages & collections at the same time. See
https://mahara.org/interaction/forum/topic.php?id=7309&offset=0&limit=10
Note that 20 to 30 users is around the number you'd hit if you're
running a whole class of users through a training session at the same
time.
The three reported cases of this are all in 15.04, so it may be a
problem introduced in that version.
The problem has been reported in both Postgres & MySQL.
** Affects: mahara
Importance: Medium
Status: Triaged
** Changed in: mahara
Status: New => Triaged
** Changed in: mahara
Importance: Undecided => Medium
** Description changed:
Multiple users on the forum have reported deadlock issues when there are
many users (20-30) copying pages & collections at the same time. See
https://mahara.org/interaction/forum/topic.php?id=7309&offset=0&limit=10
Note that 20 to 30 users is around the number you'd hit if you're
running a whole class of users through a training session at the same
time.
+
+ The three reported cases of this are all in 15.04, so it may be a
+ problem introduced in that version.
+
+ The problem has been reported in both Postgres & MySQL.
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https://bugs.launchpad.net/bugs/1492919
Title:
Deadlock issues when 20-30 users copying collections & pages at the
same time
Status in Mahara:
Triaged
Bug description:
Multiple users on the forum have reported deadlock issues when there
are many users (20-30) copying pages & collections at the same time.
See
https://mahara.org/interaction/forum/topic.php?id=7309&offset=0&limit=10
Note that 20 to 30 users is around the number you'd hit if you're
running a whole class of users through a training session at the same
time.
The three reported cases of this are all in 15.04, so it may be a
problem introduced in that version.
The problem has been reported in both Postgres & MySQL.
To manage notifications about this bug go to:
https://bugs.launchpad.net/mahara/+bug/1492919/+subscriptions
Follow ups
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[Bug 1492919] Re: Deadlock issues when 20-30 users copying collections & pages at the same time
From: Aaron Wells, 2015-11-09
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[Bug 1492919] Re: Deadlock issues when 20-30 users copying collections & pages at the same time
From: Robert Lyon, 2015-10-27
-
[Bug 1492919] Re: Deadlock issues when 20-30 users copying collections & pages at the same time
From: Robert Lyon, 2015-10-27
-
[Bug 1492919] Re: Deadlock issues when 20-30 users copying collections & pages at the same time
From: Robert Lyon, 2015-10-27
-
[Bug 1492919] Re: Deadlock issues when 20-30 users copying collections & pages at the same time
From: Aaron Wells, 2015-10-23
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[Bug 1492919] A change has been merged
From: Mahara Bot, 2015-09-24
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[Bug 1492919] Re: Deadlock issues when 20-30 users copying collections & pages at the same time
From: Aaron Wells, 2015-09-24
-
[Bug 1492919] A patch has been submitted for review
From: Mahara Bot, 2015-09-24
-
[Bug 1492919] A change has been merged
From: Mahara Bot, 2015-09-24
-
[Bug 1492919] A change has been merged
From: Mahara Bot, 2015-09-24
-
[Bug 1492919] A patch has been submitted for review
From: Mahara Bot, 2015-09-24
-
[Bug 1492919] A patch has been submitted for review
From: Mahara Bot, 2015-09-24
-
[Bug 1492919] A change has been merged
From: Mahara Bot, 2015-09-24
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[Bug 1492919] Re: Deadlock issues when 20-30 users copying collections & pages at the same time
From: Robert Lyon, 2015-09-24
-
[Bug 1492919] Re: Deadlock issues when 20-30 users copying collections & pages at the same time
From: Aaron Wells, 2015-09-24
-
[Bug 1492919] Re: Deadlock issues when 20-30 users copying collections & pages at the same time
From: Robert Lyon, 2015-09-24
-
[Bug 1492919] Re: Deadlock issues when 20-30 users copying collections & pages at the same time
From: Aaron Wells, 2015-09-23
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[Bug 1492919] Re: Deadlock issues when 20-30 users copying collections & pages at the same time
From: Russell Boyatt, 2015-09-23
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[Bug 1492919] Re: Deadlock issues when 20-30 users copying collections & pages at the same time
From: Aaron Wells, 2015-09-23
-
[Bug 1492919] A patch has been submitted for review
From: Mahara Bot, 2015-09-23
-
[Bug 1492919] Re: Deadlock issues when 20-30 users copying collections & pages at the same time
From: Aaron Wells, 2015-09-23
-
[Bug 1492919] Re: Deadlock issues when 20-30 users copying collections & pages at the same time
From: Russell Boyatt, 2015-09-20
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[Bug 1492919] Re: Deadlock issues when 20-30 users copying collections & pages at the same time
From: Robert Lyon, 2015-09-17
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[Bug 1492919] Re: Deadlock issues when 20-30 users copying collections & pages at the same time
From: Russell Boyatt, 2015-09-16
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[Bug 1492919] Re: Deadlock issues when 20-30 users copying collections & pages at the same time
From: Samuel Witzig, 2015-09-11
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[Bug 1492919] Re: Deadlock issues when 20-30 users copying collections & pages at the same time
From: Brett Lucas, 2015-09-08
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[Bug 1492919] Re: Deadlock issues when 20-30 users copying collections & pages at the same time
From: Jim Judges, 2015-09-07