[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:        51875                   51868               
Commit:               c6edf2f8bc5778b267e3    c942230eee405d35b99d
Number of test runs:  1                       6                   

TEST RESULTS:
=============
  test1: Build core-image-sato
           build time              1:30:37  ->  1:30:26         -11.2 s   -0.2 %
           tmpdir size           33.30 GiB  ->  33.30 GiB    -380.0 kiB   -0.0 %
           rootfs size          235.31 MiB  ->  235.32 MiB     +8.0 kiB   +0.0 %
                                                                                
  test12: Build virtual/kernel
           build time               7:53.3  ->  7:52.2           -1.2 s   -0.2 %
                                                                                
  test13: Build core-image-sato with rm_work enabled
           build time              1:32:08  ->  1:31:60          -8.0 s   -0.1 %
           tmpdir size            6.49 GiB  ->  6.49 GiB      +1.91 MiB   +0.0 %
                                                                                
  test2: Run core-image-sato do_rootfs with sstate
           do_rootfs time           2:03.1  ->  2:03.8          +0.74 s   +0.6 %
                                                                                
  test3: Bitbake parsing (bitbake -p)
           parse_1 time             27.3 s  ->  27.2 s          -0.06 s   -0.2 %
           parse_2 time             17.2 s  ->  17.1 s          -0.09 s   -0.5 %
           parse_3 time              1.7 s  ->  1.7 s           +0.00 s   +0.0 %
                                                                                
  test4: eSDK metrics
           installer_bin size     1.24 GiB  ->  1.24 GiB     +207.0 kiB   +0.0 %
           deploy time              2:11.2  ->  2:11.0          -0.16 s   -0.1 %
           deploy_dir size        4.05 GiB  ->  4.05 GiB     +770.2 kiB   +0.0 %
                                                                                

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