This bug was fixed in the package linux-azure - 4.15.0-1045.49~14.04.1
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linux-azure (4.15.0-1045.49~14.04.1) trusty; urgency=medium
[ Ubuntu: 4.15.0-1045.49 ]
* [linux-azure] Storage performance drop on RAID (LP: #1828248)
- Revert "blk-mq: remove the request_list usage"
This bug was fixed in the package linux-azure - 4.15.0-1045.49
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linux-azure (4.15.0-1045.49) xenial; urgency=medium
* [linux-azure] Storage performance drop on RAID (LP: #1828248)
- Revert "blk-mq: remove the request_list usage"
[ Ubuntu: 4.15.0-50.54 ]
*
This bug was fixed in the package linux-azure - 4.18.0-1018.18
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linux-azure (4.18.0-1018.18) cosmic; urgency=medium
[ Ubuntu: 4.18.0-20.21 ]
* CVE-2018-12126 // CVE-2018-12127 // CVE-2018-12130
- Documentation/l1tf: Fix small spelling typo
- x86/cpu: Sanitize
It was found that 4.15 has a couple more patches missing for NVMe, those
patches are required to get to the target number of IOPS.
The commits are:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/drivers/nvme/host/pci.c?h=v5.1=f9dde187fa921c12a8680089a77595b866e65455
If it would be best, I can open a new bug for those two additional
commits.
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https://bugs.launchpad.net/bugs/1819689
Title:
[linux-azure] Commit To Improve NVMe Performance
To manage
** Changed in: linux-azure (Ubuntu Xenial)
Status: New => Fix Committed
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Title:
[linux-azure] Commit To Improve NVMe Performance
To
** Changed in: linux-azure (Ubuntu Cosmic)
Status: New => Fix Committed
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Title:
[linux-azure] Commit To Improve NVMe Performance
To
** Also affects: linux-azure (Ubuntu Cosmic)
Importance: Undecided
Status: New
** Also affects: linux-azure (Ubuntu Xenial)
Importance: Undecided
Status: New
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https://lists.ubuntu.com/archives/kernel-team/2019-April/100272.html
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https://bugs.launchpad.net/bugs/1819689
Title:
[linux-azure] Commit To Improve NVMe Performance
To manage
Hi, Joe. I'm including the patch for 4.15. Let me know if you find any
issues on the test kernel.
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Title:
[linux-azure] Commit To Improve NVMe
Hi, Joe.
Can you confirm the patch is also necessary for 4.15?
I backported the commit to xenial/linux-azure and it just required a bit
of fixing due to context differences. I also built a test kernel if you
want to test it:
https://kernel.ubuntu.com/~mhcerri/azure/xenial-linux-
** Tags added: patch
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Title:
[linux-azure] Commit To Improve NVMe Performance
To manage notifications about this bug go to:
** Patch added: "0001-blk-mq-remove-the-request_list-usage_xenial.patch"
https://bugs.launchpad.net/ubuntu/+source/linux-azure/+bug/1819689/+attachment/5256828/+files/0001-blk-mq-remove-the-request_list-usage_xenial.patch
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