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SubjectRe: [perf report] 977f739b71: perf-test.skid_test.round2.MEM_LOAD_L3_MISS_RETIRED.LOCAL_DRAM_dtlb_withou t_NMI_fixed_period.fail
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On 9/30/2020 8:41 PM, Michael Petlan wrote:
> Hello. To me, it looks rather a random failure. Is it actually reproducible
> and proven that the patch has caused it? The patch doesn't seem to cause
> the fails below.

Hi Michael,

It's not always reproducible, but we can reproduce it in most cases:

39c0a53b114d0317 977f739b7126bf98b5202e243f6
---------------- ---------------------------
fail:runs %reproduction fail:runs
| | |
:8 75% 6:8
perf-test.skid_test.round2.MEM_LOAD_L3_MISS_RETIRED.LOCAL_DRAM_dtlb_with_NMI.fail
:8 88% 7:8
perf-test.skid_test.round2.MEM_LOAD_L3_MISS_RETIRED.LOCAL_DRAM_dtlb_without_NMI_fixed_period.fail
:8 25% 2:8
perf-test.skid_test.round2.MEM_LOAD_RETIRED.L2_HIT_dtlb_with_NMI.fail
:8 62% 5:8
perf-test.skid_test.round2.MEM_LOAD_RETIRED.L2_HIT_dtlb_without_NMI_fixed_period.fail

Best Regards,
Rong Chen


> Cheers,
> Michael
>
> On Wed, 30 Sep 2020, kernel test robot wrote:
>> Greeting,
>>
>> FYI, we noticed the following commit (built with gcc-9):
>>
>> commit: 977f739b7126bf98b5202e243f60cbc0a1ec2c3b ("perf report: Disable ordered_events for raw dump")
>> https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master
>>
>>
>> in testcase: perf-test
>> version: perf-test-x86_64-git-1_20200717
>> with following parameters:
>>
>> type: lkp
>> ucode: 0xd6
>>
>> test-description: The internal Perf Test suite.
>>
>>
>> on test machine: 4 threads Intel(R) Core(TM) i7-7567U CPU @ 3.50GHz with 32G memory
>>
>> caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace):
>>
>>
>>
>>
>> If you fix the issue, kindly add following tag
>> Reported-by: kernel test robot <rong.a.chen@intel.com>
>>
>>
>> 2020-09-28 17:02:40 ./skid_test/run.sh
>> Mon Sep 28 17:02:58 UTC 2020
>> 3 test cases pass for skid_test test. 3 test cases fail for skid_test test.
>> Test Case BR_INST_RETIRED.ALL_BRANCHES_PEBS_triad_loop_with_NMI PASS!
>> Test Case MEM_LOAD_RETIRED.L2_HIT_dtlb_with_NMI PASS!
>> Test Case MEM_LOAD_L3_MISS_RETIRED.LOCAL_DRAM_dtlb_with_NMI FAILED!
>> Test Case BR_INST_RETIRED.ALL_BRANCHES_PEBS_triad_loop_without_NMI_fixed_period PASS!
>> Test Case MEM_LOAD_RETIRED.L2_HIT_dtlb_without_NMI_fixed_period FAILED!
>> Test Case MEM_LOAD_L3_MISS_RETIRED.LOCAL_DRAM_dtlb_without_NMI_fixed_period FAILED!
>>
>>
>>
>> To reproduce:
>>
>> git clone https://github.com/intel/lkp-tests.git
>> cd lkp-tests
>> bin/lkp install job.yaml # job file is attached in this email
>> bin/lkp run job.yaml
>>
>>
>>
>> Thanks,
>> Rong Chen
>>
>>
>

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