[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:        53107                   52956               
Commit:               ecfe26834922861ab696    46f6f6a5f9de5e7f8f32
Number of test runs:  2                       10                  

TEST RESULTS:
=============
  test1: Build core-image-sato
           build time              1:30:59  ->  1:30:60         +0.23 s   +0.0 %
           tmpdir size           33.72 GiB  ->  33.72 GiB     +5.89 MiB   +0.0 %
           rootfs size          241.69 MiB  ->  239.71 MiB    -1.98 MiB   -0.8 %
                                                                                
  test12: Build virtual/kernel
           build time               7:56.4  ->  7:54.7           -1.7 s   -0.4 %
                                                                                
  test13: Build core-image-sato with rm_work enabled
           build time              1:31:46  ->  1:31:42          -3.2 s   -0.1 %
           tmpdir size            6.44 GiB  ->  6.43 GiB      -5.26 MiB   -0.1 %
                                                                                
  test2: Run core-image-sato do_rootfs with sstate
           do_rootfs time           2:23.8  ->  2:22.3           -1.5 s   -1.1 %
                                                                                
  test3: Bitbake parsing (bitbake -p)
           parse_1 time             30.9 s  ->  31.3 s          +0.45 s   +1.5 %
           parse_2 time             20.5 s  ->  20.3 s          -0.26 s   -1.3 %
           parse_3 time              1.8 s  ->  1.8 s           +0.01 s   +0.4 %
                                                                                
  test4: eSDK metrics
           installer_bin size     1.25 GiB  ->  1.25 GiB     +536.8 kiB   +0.0 %
           deploy time              2:25.8  ->  2:26.4          +0.62 s   +0.4 %
           deploy_dir size        4.14 GiB  ->  4.14 GiB     +598.6 kiB   +0.0 %
                                                                                

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