[Bug 937] [dpdk-22.03] unit_tests_mempool/test_mempool_perf: timeout on mempool_perf_autotest

[bugzilla at dpdk.org]

https://bugs.dpdk.org/show_bug.cgi?id=937

            Bug ID: 937
           Summary: [dpdk-22.03] unit_tests_mempool/test_mempool_perf:
                    timeout on mempool_perf_autotest
           Product: DPDK
           Version: unspecified
          Hardware: All
                OS: All
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: other
          Assignee: dev at dpdk.org
          Reporter: linglix.chen at intel.com
  Target Milestone: ---

dpdk-22.03-rc1: 2e07139b66a810883871ff20a5f31e4c222e5b40

Reproduce Step:

1.launch dpdk-test
x86_64-native-linuxapp-gcc/app/test/dpdk-test -l 1-111 -n 4
2. RTE>>mempool_perf_autotest

Expect results: mempool_perf_autotest timeout in 2000s.

Actual results: mempool_perf_autotest need run 1 or more hours.

Is this issue a regression: Y
Version the regression was introduced: Specify git id if known.
 First bad commit:ed579e50c66db90485593c6c79f5366a57145f2a
Author: Morten Brørup <mb at smartsharesystems.com>
Date: Mon Jan 24 15:59:53 2022 +0100

mempool: test performance with constant n

"What gets measured gets done."

This patch adds mempool performance tests where the number of objects to
put and get is constant at compile time, which may significantly improve
the performance of these functions. [*]

Also, it is ensured that the array holding the object used for testing
is cache line aligned, for maximum performance.

And finally, the following entries are added to the list of tests:
- Number of kept objects: 512
- Number of objects to get and to put: The number of pointers fitting
into a cache line, i.e. 8 or 16

[*] Some example performance test (with cache) results:

get_bulk=4 put_bulk=4 keep=128 constant_n=false rate_persec=280480972
get_bulk=4 put_bulk=4 keep=128 constant_n=true rate_persec=622159462

get_bulk=8 put_bulk=8 keep=128 constant_n=false rate_persec=477967155
get_bulk=8 put_bulk=8 keep=128 constant_n=true rate_persec=917582643

get_bulk=32 put_bulk=32 keep=32 constant_n=false rate_persec=871248691
get_bulk=32 put_bulk=32 keep=32 constant_n=true rate_persec=1134021836

Signed-off-by: Morten Brørup <mb at smartsharesystems.com>
Signed-off-by: Olivier Matz <olivier.matz at 6wind.com>

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