https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_3377/shard-glkb6/igt@perf_pmu@multi-client-vecs0.html (perf_pmu:4132) CRITICAL: Test assertion failure function multi_client, file perf_pmu.c:650: (perf_pmu:4132) CRITICAL: Failed assertion: (double)(val[1]) <= (1.0 + (tolerance)) * (double)(slept) && (double)(val[1]) >= (1.0 - (tolerance)) * (double)(slept) (perf_pmu:4132) CRITICAL: 'val[1]' != 'slept' (190889525.000000 not within 5.000000% tolerance of 166780280.000000) Subtest multi-client-vecs0 failed. Note this was previously filed on bug 103857. However, that bug was fixed for a lot of other tests and machines.
Final cleanup (we hope): commit 8ee4f19c47031f23340055da4d9f2af537de23f4 Author: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Date: Fri Nov 24 09:49:59 2017 +0000 drm/i915/pmu: Stop averaging with the previous sample Averaging with the previous sample brings a small statistical improvement to sampling counters, but can leek a little bit of state from a current client to the next which mulls the border between past and present for observing clients. This is because on event enable clients record the current counter value and use it as reference, but with rapid off-on event cycles, and due the delayed nature of sampling timer self-disarm, previous sample value does not get cleared under these circumstances. Solution is to stop averaging with the previous sample. This has a small downside of losing some precision with short and spiky signals, but the alternatives look too complicated for the benefit. Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Cc: Chris Wilson <chris@chris-wilson.co.uk> Cc: Sagar Arun Kamble <sagar.a.kamble@intel.com> Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> Tested-by: Chris Wilson <chris@chris-wilson.co.uk> Link: https://patchwork.freedesktop.org/patch/msgid/20171124094959.10725-1-tvrtko.ursulin@linux.intel.com
*** Bug 103932 has been marked as a duplicate of this bug. ***
*** Bug 103929 has been marked as a duplicate of this bug. ***
*** Bug 103926 has been marked as a duplicate of this bug. ***
*** Bug 103931 has been marked as a duplicate of this bug. ***
OK, all the tests are now green I will close and archive and vet the tests.
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