[dpdk-dev] [Bug 826] red_autotest random failures

[David Marchand]

On Fri, Oct 8, 2021 at 9:24 AM <bugzilla at dpdk.org> wrote:
>
> https://bugs.dpdk.org/show_bug.cgi?id=826
>
>             Bug ID: 826
>            Summary: red_autotest random failures
>            Product: DPDK
>            Version: unspecified
>           Hardware: All
>                 OS: All
>             Status: UNCONFIRMED
>           Severity: normal
>           Priority: Normal
>          Component: other
>           Assignee: cristian.dumitrescu at intel.com
>           Reporter: david.marchand at redhat.com
>                 CC: dev at dpdk.org, jasvinder.singh at intel.com
>   Target Milestone: ---
>
> A recent failure can be found at:
> https://lab.dpdk.org/results/dashboard/patchsets/19223/
>
> 50/94 DPDK:fast-tests / red_autotest                   FAIL              0.86s
>  exit status 1


functional test 6 : use several queues (each with its own run-time data),
            use several RED configurations (such that each
configuration is sharte_red by multiple queues),
            increase average queue size to target level,
            dequeue all packets until queue is empty,
            confirm that average queue size is computed correctly
while queue is empty
            (this is a larger scale version of functional test 3)

queue          config         q avg before   q avg after    expected
    difference %   tolerance %    result
0              0              1022.0000      1022.0000      1016.0627
    0.5843         5.0000         pass
1              0              1022.0000      1022.0000      1016.0627
    0.5843         5.0000         pass
2              1              1022.0000      1022.0000      1010.1483
    1.1733         5.0000         pass
3              1              1022.0000      937.1660       1010.1483
    7.2249         5.0000         fail
-------------------------------------<fail>-------------------------------------



This failure keeps on popping in the CI.
The bug report is one month old, with no reply.


I sent a proposal of removing red_autotest from the list executed by the CI.
https://patchwork.dpdk.org/project/dpdk/patch/20211027140458.2502-2-david.marchand@redhat.com/

It might be the best solution waiting for an analysis.


-- 
David Marchand