[Bug 1709889] Re: Ubuntu 17.04: Bug in cfq scheduler, I/Os do not get submitted to adapter for a very long time.

2018-08-03 Thread Joseph Salisbury
Updated bug description and added Bionic bug task. Marked bug 1785081 as a duplicate of this bug. ** Also affects: linux (Ubuntu Bionic) Importance: Undecided Status: New ** Changed in: linux (Ubuntu Bionic) Status: New => Triaged ** Changed in: linux (Ubuntu Bionic)

[Bug 1709889] Re: Ubuntu 17.04: Bug in cfq scheduler, I/Os do not get submitted to adapter for a very long time.

2018-08-02 Thread Dimitri John Ledkov
But that new lp bug is sparse on details too can all comments be pushed through on https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1785081 ? What exactly is happening with the bionic kernel, and what is the expectation here? The comments in this bug report from cking still stand imho.

[Bug 1709889] Re: Ubuntu 17.04: Bug in cfq scheduler, I/Os do not get submitted to adapter for a very long time.

2018-08-02 Thread Frédéric Bonnard
Dimitri, we've synced the other bug 1785081 that is probably the same issue as this one. F. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1709889 Title: Ubuntu 17.04: Bug in cfq scheduler, I/Os do

[Bug 1709889] Re: Ubuntu 17.04: Bug in cfq scheduler, I/Os do not get submitted to adapter for a very long time.

2018-07-31 Thread Dimitri John Ledkov
For now reopening the states of this issue in launchpad as NEW and UNDECIDED priority. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1709889 Title: Ubuntu 17.04: Bug in cfq scheduler, I/Os do not

[Bug 1709889] Re: Ubuntu 17.04: Bug in cfq scheduler, I/Os do not get submitted to adapter for a very long time.

2018-07-31 Thread Dimitri John Ledkov
This bug was closed in january 2018. Are you sure this is the same issue / right ticket? I see that you have recently marked some other bug as a duplicate of this one. maybe you can sync that one? If not please state what is happening on 18.04 since in january it was believed that this issue

[Bug 1709889] Re: Ubuntu 17.04: Bug in cfq scheduler, I/Os do not get submitted to adapter for a very long time.

2018-07-09 Thread bugproxy
** Tags removed: severity-critical ** Tags added: severity-high -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1709889 Title: Ubuntu 17.04: Bug in cfq scheduler, I/Os do not get submitted to

[Bug 1709889] Re: Ubuntu 17.04: Bug in cfq scheduler, I/Os do not get submitted to adapter for a very long time.

2018-05-14 Thread bugproxy
--- Comment From dougm...@us.ibm.com 2018-05-14 13:40 EDT--- Note, we are still seeing issues with CFQ on 18.04 (Bionic). ** Tags removed: targetmilestone-inin1704 ** Tags added: targetmilestone-inin1804 -- You received this bug notification because you are a member of Ubuntu Bugs,

[Bug 1709889] Re: Ubuntu 17.04: Bug in cfq scheduler, I/Os do not get submitted to adapter for a very long time.

2018-01-22 Thread Manoj Iyer
These patches are available in Artful and will be available in the linux-hwe kernel, please upgrade to the latest linux-hwe and reopen this bug if you are able to reproduce it. Marking it invalid for now. ** Changed in: linux (Ubuntu) Status: In Progress => Invalid ** Changed in:

[Bug 1709889] Re: Ubuntu 17.04: Bug in cfq scheduler, I/Os do not get submitted to adapter for a very long time.

2018-01-17 Thread Steve Langasek
Ubuntu 17.04 has reached end of life. No further bugfixes will be applied to this version. ** Changed in: linux (Ubuntu Zesty) Status: In Progress => Won't Fix -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu.

[Bug 1709889] Re: Ubuntu 17.04: Bug in cfq scheduler, I/Os do not get submitted to adapter for a very long time.

2017-09-18 Thread Andrew Cloke
Marking as "incomplete" until fix lands upstream. ** Changed in: ubuntu-power-systems Status: In Progress => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1709889 Title: Ubuntu

[Bug 1709889] Re: Ubuntu 17.04: Bug in cfq scheduler, I/Os do not get submitted to adapter for a very long time.

2017-08-28 Thread Manoj Iyer
** Tags removed: triage-r ** Tags added: triage-g -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1709889 Title: Ubuntu 17.04: Bug in cfq scheduler, I/Os do not get submitted to adapter for a very

[Bug 1709889] Re: Ubuntu 17.04: Bug in cfq scheduler, I/Os do not get submitted to adapter for a very long time.

2017-08-28 Thread Manoj Iyer
** Tags added: triage-r -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1709889 Title: Ubuntu 17.04: Bug in cfq scheduler, I/Os do not get submitted to adapter for a very long time. To manage

[Bug 1709889] Re: Ubuntu 17.04: Bug in cfq scheduler, I/Os do not get submitted to adapter for a very long time.

2017-08-23 Thread Colin Ian King
Thanks for also testing with the latest upstream kernel and reporting it to the upstream developers. I've added the link to the bug so we pull in bug updates automatically from the bugzilla. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to

[Bug 1709889] Re: Ubuntu 17.04: Bug in cfq scheduler, I/Os do not get submitted to adapter for a very long time.

2017-08-23 Thread Colin Ian King
Doug, "Can we get some answers as to why CFQ is the default scheduler? It seems like the expedient fix is to change the default to "deadline"." Sure. We went back to CFQ as it was showing to be a good general purpose I/O scheduler for a lot of wide ranging and general purpose I/O demands.

[Bug 1709889] Re: Ubuntu 17.04: Bug in cfq scheduler, I/Os do not get submitted to adapter for a very long time.

2017-08-23 Thread bugproxy
--- Comment From dougm...@us.ibm.com 2017-08-23 09:19 EDT--- Opened kernel.org bugzilla https://bugzilla.kernel.org/show_bug.cgi?id=196737 ** Bug watch added: Linux Kernel Bug Tracker #196737 https://bugzilla.kernel.org/show_bug.cgi?id=196737 -- You received this bug notification

[Bug 1709889] Re: Ubuntu 17.04: Bug in cfq scheduler, I/Os do not get submitted to adapter for a very long time.

2017-08-15 Thread Colin Ian King
I've rolled three patches into a test kernel to test. I believe the best fix is probably "cfq: Disable writeback throttling by default" https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=142bbdfccc8b3e9f7342f2ce8422e76a3b45beae The commits are:

[Bug 1709889] Re: Ubuntu 17.04: Bug in cfq scheduler, I/Os do not get submitted to adapter for a very long time.

2017-08-15 Thread Joseph Salisbury
** Changed in: linux (Ubuntu) Assignee: Joseph Salisbury (jsalisbury) => Colin Ian King (colin-king) ** Changed in: linux (Ubuntu Zesty) Assignee: Joseph Salisbury (jsalisbury) => Colin Ian King (colin-king) -- You received this bug notification because you are a member of Ubuntu

[Bug 1709889] Re: Ubuntu 17.04: Bug in cfq scheduler, I/Os do not get submitted to adapter for a very long time.

2017-08-11 Thread Joseph Salisbury
I built a 17.04(Zesty) test kernel with a pick of commit 5be6b75610ce. This kernel can be downloaded from: http://kernel.ubuntu.com/~jsalisbury/lp1709889/ Can you test this kernel and see if it resolves this bug? I also see that commit 5be6b75610ce has been cc'd to upstream stable, but it has

[Bug 1709889] Re: Ubuntu 17.04: Bug in cfq scheduler, I/Os do not get submitted to adapter for a very long time.

2017-08-11 Thread Frank Heimes
** Changed in: ubuntu-power-systems Status: New => In Progress -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1709889 Title: Ubuntu 17.04: Bug in cfq scheduler, I/Os do not get submitted to

[Bug 1709889] Re: Ubuntu 17.04: Bug in cfq scheduler, I/Os do not get submitted to adapter for a very long time.

2017-08-11 Thread Joseph Salisbury
** Changed in: linux (Ubuntu) Status: New => In Progress ** Changed in: linux (Ubuntu) Importance: Undecided => Critical ** Changed in: linux (Ubuntu) Assignee: Ubuntu on IBM Power Systems Bug Triage (ubuntu-power-triage) => Joseph Salisbury (jsalisbury) ** Also affects: linux

[Bug 1709889] Re: Ubuntu 17.04: Bug in cfq scheduler, I/Os do not get submitted to adapter for a very long time.

2017-08-10 Thread Andrew Cloke
** Also affects: ubuntu-power-systems Importance: Undecided Status: New ** Changed in: ubuntu-power-systems Importance: Undecided => Critical ** Changed in: ubuntu-power-systems Assignee: (unassigned) => Canonical Kernel Team (canonical-kernel-team) -- You received this bug