[yocto-perf] Build Perf Test Report for CentOS Linux 7 (Core)

[Yocto CentOS 7 Build Perf Tester]

Yocto build performance test report.

TEST METADATA:
==============
                      CURRENT COMMIT          COMPARING WITH      
Hostname:             ypperf-centos7          ypperf-centos7      
Branch:               master                  master              
Commit number:        52192                   52165               
Commit:               84eecb017ef92ef36b4d    3e5c6cbf3475b513458a
Number of test runs:  3                       5                   

TEST RESULTS:
=============
  test1: Build core-image-sato
           build time              1:30:57  ->  1:31:06          +9.6 s   +0.2 %
           tmpdir size           33.19 GiB  ->  33.19 GiB    +595.5 kiB   +0.0 %
           rootfs size          235.29 MiB  ->  235.30 MiB     +3.5 kiB   +0.0 %
                                                                                
  test12: Build virtual/kernel
           build time               7:52.3  ->  7:49.7           -2.6 s   -0.5 %
                                                                                
  test13: Build core-image-sato with rm_work enabled
           build time              1:32:15  ->  1:32:28         +12.8 s   +0.2 %
           tmpdir size            6.51 GiB  ->  6.51 GiB     -459.2 kiB   -0.0 %
                                                                                
  test2: Run core-image-sato do_rootfs with sstate
           do_rootfs time           2:19.5  ->  2:20.0          +0.47 s   +0.3 %
                                                                                
  test3: Bitbake parsing (bitbake -p)
           parse_1 time             29.2 s  ->  29.1 s          -0.04 s   -0.1 %
           parse_2 time             18.9 s  ->  18.9 s          -0.00 s   -0.0 %
           parse_3 time              1.8 s  ->  1.8 s           -0.01 s   -0.5 %
                                                                                
  test4: eSDK metrics
           installer_bin size     1.23 GiB  ->  1.23 GiB     -197.9 kiB   -0.0 %
           deploy time              2:16.5  ->  2:16.4          -0.05 s   -0.0 %
           deploy_dir size        4.06 GiB  ->  4.06 GiB      -65.9 kiB   -0.0 %
                                                                                

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