test_request_rate_manager.cc:1988: TEST CASE: send_request_rate_request_rate_manager，an error has occurred

[lillianokok]

Environmental Information:
cat /etc/os-release
NAME="Ubuntu"
VERSION="18.04.5 LTS (Bionic Beaver)"
ID=ubuntu
ID_LIKE=debian
PRETTY_NAME="Ubuntu 18.04.5 LTS"
VERSION_ID="18.04"

lscpu
Architecture: aarch64
Byte Order: Little Endian
CPU(s): 96
On-line CPU(s) list: 0-95
Thread(s) per core: 1
Core(s) per socket: 48
Socket(s): 2
NUMA node(s): 4

free -m
total used free shared buff/cache available
Mem: 515714 1564 493304 2 20845 511307
Swap: 2047 0 2047

execution: ./perf_analyzer_unit_tests -tce="dataloader: ParseData: Supplied Shape is valid, Concurrency - Shared memory methods, dataloader: ParseData: Mismatch Input Data and Fixed Shape, dataloader: ParseData: Mismatch Input Data and Dynamic Shape, dataloader: ParseData: Valid Data, Request rate - Shared memory methods"
The command occasionally reports errors, with the error message as follows:

Thread [0] had error: Injected test error
Thread [2] had error: Injected test error
===============================================================================
/home/stage/root/spack-stage-perf-analyzer-main-wwn45bnhbpz35wqcvschx4pgutqmsbf2/spack-src/src/test_request_rate_manager.cc:1988:
TEST CASE:  send_request_rate_request_rate_manager: testing logic around detecting send request count
DEEPEST SUBCASE STACK REACHED (DIFFERENT FROM THE CURRENT ONE):
  async - slow response with sequences on
  send rate can be limited if serial sequences is on
/home/stage/root/spack-stage-perf-analyzer-main-wwn45bnhbpz35wqcvschx4pgutqmsbf2/spack-src/src/test_request_rate_manager.cc:2050: ERROR: CHECK( num_sent_requests == doctest::Approx(expected_count).epsilon(0.1) ) is NOT correct!
  values: CHECK( 3 == Approx( 5.0 ) )
===============================================================================
[doctest] test cases:    129 |    128 passed | 1 failed | 6 skipped
[doctest] assertions: 410169 | 410168 passed | 1 failed |
[doctest] Status: FAILURE!