So the workaround suggested upstream is to add: innodb-read-io-threads=1 innodb-write-io-threads=1
to ~/.local/share/akonadi/mysql.cnf Can someone please confirm if this is accurate and if it works? We'll need to wait for a fix from upstream, but in the meantime hopefully the workaround will work for those affected. ** Description changed: + [Status] + + Suspected cause is triaged upstream in MySQL; waiting fix. + + [Workaround] + + Proposed in comment 10; please report success or failure. + + [Original Description] + In the last days using Kubuntu 16.04 I've noticed that after a while of use, RAM consumption of mysqld daemon rises above 800 MB, even surpassing Firefox, as you can see in the attached images. Initially, when system is just booted, RAM consumption of mysqld daemon it remains approximately 135-140 MB, but I have seen how after a while, in a matter of a few minutes, without touching anything, consumption rises progressively to around 830 MB. In the second image you can see that mysqld daemon is related to Akonadi, which at the same time has a lot of threads running. It is possible that the problem is in managing Akonadi processes, but it is clear that consumption of mysqld daemon is not normal, and that there must be a problem, either MySQL or Akonadi, causing this situation. I tried replacing MySQL with MariaDB, but will not let me uninstall MySQL components without also uninstall a lot of applications as dependencies (like Akonadi, Amarok, Kontact, KAdressBook ...). What I can do, even as an interim solution? - Here are the attached screenshots: https://www.sendspace.com/file/712oyk https://www.sendspace.com/file/qcqeem ** Changed in: mysql-5.7 (Ubuntu) Status: New => Triaged ** Changed in: mysql-5.7 (Ubuntu) Importance: Undecided => High -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1576930 Title: Excessive consumption RAM of mysqld daemon in Kubuntu 16.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/akonadi/+bug/1576930/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
