[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:        52817                   52800               
Commit:               70edcf9cf3c379830680    8615d47a3a39e78fb7cf
Number of test runs:  15                      2                   

TEST RESULTS:
=============
  test1: Build core-image-sato
           build time              1:30:31  ->  1:30:43          +11.6 s   +0.2 %
           tmpdir size           33.46 GiB  ->  33.46 GiB     +364.9 kiB   +0.0 %
           rootfs size          240.95 MiB  ->  240.99 MiB     +41.6 kiB   +0.0 %
                                                                                 
  test12: Build virtual/kernel
           build time               7:55.5  ->  7:55.7           +0.18 s   +0.0 %
                                                                                 
  test13: Build core-image-sato with rm_work enabled
           build time              1:31:33  ->  1:31:29           -3.9 s   -0.1 %
           tmpdir size            6.40 GiB  ->  6.40 GiB     -1020.4 kiB   -0.0 %
                                                                                 
  test2: Run core-image-sato do_rootfs with sstate
           do_rootfs time           2:22.8  ->  2:21.2            -1.6 s   -1.1 %
                                                                                 
  test3: Bitbake parsing (bitbake -p)
           parse_1 time             29.9 s  ->  29.8 s           -0.07 s   -0.2 %
           parse_2 time             19.8 s  ->  19.8 s           -0.03 s   -0.2 %
           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       -33.2 kiB   -0.0 %
           deploy time              2:24.2  ->  2:23.7           -0.49 s   -0.3 %
           deploy_dir size        4.12 GiB  ->  4.12 GiB      -124.8 kiB   -0.0 %
                                                                                 

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