bionic/linux: 4.15.0-172.181 snap-debs snap:pc-kernel
Bug #1964213 reported by
Kleber Sacilotto de Souza
This bug report is a duplicate of:
Bug #1965549: bionic/linux: 4.15.0-173.182 snap-debs snap:pc-kernel.
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This bug affects 1 person
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
Kernel SRU Workflow |
Fix Released
|
Medium
|
Unassigned | ||
Snap-certification-testing |
Incomplete
|
Medium
|
Canonical Hardware Certification | ||
Snap-prepare |
Fix Released
|
Medium
|
Canonical Kernel Team | ||
Snap-release-to-beta |
Fix Released
|
Medium
|
Canonical Kernel Team | ||
Snap-release-to-candidate |
New
|
Medium
|
Canonical Kernel Team | ||
Snap-release-to-edge |
Fix Released
|
Medium
|
Canonical Kernel Team | ||
Snap-release-to-stable |
New
|
Medium
|
Canonical Kernel Team |
Bug Description
This bug will contain status and test results related to a kernel source (or snap) as stated in the title.
For an explanation of the tasks and the associated workflow see:
https:/
-- swm properties --
issue: KSRU-1303
kernel-
phase: Certification Testing
phase-changed: Thursday, 10. March 2022 19:56 UTC
reason:
snap-
snap-name: pc-kernel
variant: snap-debs
versions-clamp:
parent: 4.15.0-172.181
self: 4.15.0-172.181
tags: | added: kernel-release-tracking-bug-live |
description: | updated |
tags: | added: kernel-sru-cycle-2022.02.21-3 |
description: | updated |
description: | updated |
tags: | added: kernel-sru-derivative-of-1964240 |
Changed in kernel-sru-workflow: | |
status: | New → Confirmed |
importance: | Undecided → Medium |
Changed in kernel-sru-workflow: | |
status: | Confirmed → Triaged |
summary: |
- bionic/linux: <version to be filled> snap-debs + bionic/linux: <version to be filled> snap-debs snap:pc-kernel |
description: | updated |
Changed in kernel-sru-workflow: | |
status: | Triaged → In Progress |
tags: | added: kernel-jira-issue-ksru-1303 |
description: | updated |
summary: |
- bionic/linux: <version to be filled> snap-debs snap:pc-kernel + bionic/linux: 4.15.0-172.181 snap-debs snap:pc-kernel |
description: | updated |
description: | updated |
description: | updated |
description: | updated |
description: | updated |
description: | updated |
description: | updated |
tags: | removed: kernel-release-tracking-bug-live |
Changed in kernel-sru-workflow: | |
status: | In Progress → Fix Released |
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I'm seeing a regression with this kernel on dawson-i nuc (NUC7i3DNHE) on the clocktest test in checkbox. This is a test that checks for cpu clock jitter, and I retried it multiple times and it is very reproducible. I also reverted to the kernel in stable and failed to reproduce it there. You can find the code for this test at https:/ /git.launchpad. net/plainbox- provider- checkbox/ tree/src/ clocktest. c or you can also install the checkbox snap (uc18/stable) and run "checkbox. checkbox- cli run '.*clocktest.*'" to run it from the snap.
When the test passed for me (on the previous kernel) the output looked like this:
Testing for clock jitter on 4 cpus
PASSED: largest jitter seen was 0.000167
Testing clock direction for 5 minutes...
PASSED: Iteration 0 delta: 0.000229
PASSED: Iteration 1 delta: 0.000259
PASSED: Iteration 2 delta: 0.000242
PASSED: Iteration 3 delta: 0.000235
PASSED: Iteration 4 delta: 0.000247
clock direction test: sleeptime 60 sec per iteration, failed iterations: 0
When it failed on this kernel, it took much longer to run. This was the output:
Testing for clock jitter on 4 cpus
ERROR: jitter = 0.254654 Jitter must be < 0.2 to pass
ERROR: Failed Iteration = 50, Slowest CPU: 0 Fastest CPU: 3
ERROR: jitter = 0.236886 Jitter must be < 0.2 to pass
ERROR: Failed Iteration = 148, Slowest CPU: 0 Fastest CPU: 3
ERROR: jitter = 0.236831 Jitter must be < 0.2 to pass
ERROR: Failed Iteration = 181, Slowest CPU: 0 Fastest CPU: 3
ERROR: jitter = 0.339615 Jitter must be < 0.2 to pass
ERROR: Failed Iteration = 197, Slowest CPU: 0 Fastest CPU: 3
ERROR: jitter = 0.236866 Jitter must be < 0.2 to pass
ERROR: Failed Iteration = 215, Slowest CPU: 0 Fastest CPU: 3
ERROR: jitter = 0.236817 Jitter must be < 0.2 to pass
ERROR: Failed Iteration = 522, Slowest CPU: 0 Fastest CPU: 3
ERROR: jitter = 0.254743 Jitter must be < 0.2 to pass
ERROR: Failed Iteration = 549, Slowest CPU: 0 Fastest CPU: 3
ERROR: jitter = 0.254881 Jitter must be < 0.2 to pass
ERROR: Failed Iteration = 617, Slowest CPU: 0 Fastest CPU: 3
ERROR: jitter = 0.254600 Jitter must be < 0.2 to pass
ERROR: Failed Iteration = 619, Slowest CPU: 0 Fastest CPU: 3
ERROR: jitter = 0.236812 Jitter must be < 0.2 to pass
ERROR: Failed Iteration = 736, Slowest CPU: 0 Fastest CPU: 3
ERROR: jitter = 0.236946 Jitter must be < 0.2 to pass
ERROR: Failed Iteration = 760, Slowest CPU: 0 Fastest CPU: 3
ERROR: jitter = 0.339465 Jitter must be < 0.2 to pass
ERROR: Failed Iteration = 821, Slowest CPU: 0 Fastest CPU: 3
ERROR: jitter = 0.254704 Jitter must be < 0.2 to pass
ERROR: Failed Iteration = 934, Slowest CPU: 0 Fastest CPU: 3
ERROR: jitter = 0.236925 Jitter must be < 0.2 to pass
ERROR: Failed Iteration = 937, Slowest CPU: 0 Fastest CPU: 3
ERROR: jitter = 0.254870 Jitter must be < 0.2 to pass
ERROR: Failed Iteration = 978, Slowest CPU: 0 Fastest CPU: 3
ERROR: jitter = 0.236836 Jitter must be < 0.2 to pass
ERROR: Failed Iteration = 1000, Slowest CPU: 0 Fastest CPU: 3
ERROR: jitter = 0.236932 Jitter must be < 0.2 to pass
ERROR: Failed Iteration = 1057, Slowest CPU: 0 Fastest CPU: 3
ERROR: jitter = 0.254800 Jitter must be < 0.2 to pass
ERROR: Failed Iteration = 1112, Slowest CPU: 0 Fastest CPU: 3
ERROR: jitter = 0.23...