[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:        49608                   49553               
Commit:               80c7ca2c28959d08a59d    f49ee61422c867516db2
Number of test runs:  7                       20                  

TEST RESULTS:
=============
  test1: Build core-image-sato
           build time              1:19:60  ->  1:19:57          -2.7 s   -0.1 %
           tmpdir size           30.94 GiB  ->  30.94 GiB     -1.81 MiB   -0.0 %
           rootfs size          224.90 MiB  ->  224.89 MiB     -4.3 kiB   -0.0 %
                                                                                
  test12: Build virtual/kernel
           build time               7:04.6  ->  7:04.6          -0.09 s   -0.0 %
                                                                                
  test13: Build core-image-sato with rm_work enabled
           build time              1:21:51  ->  1:21:50          -1.1 s   -0.0 %
           tmpdir size            6.08 GiB  ->  6.08 GiB      -93.2 kiB   -0.0 %
                                                                                
  test2: Run core-image-sato do_rootfs with sstate
           do_rootfs time           2:03.4  ->  2:03.1          -0.32 s   -0.3 %
                                                                                
  test3: Bitbake parsing (bitbake -p)
           parse_1 time             27.7 s  ->  27.7 s          +0.00 s   +0.0 %
           parse_2 time             17.3 s  ->  17.3 s          +0.06 s   +0.3 %
           parse_3 time              1.7 s  ->  1.7 s           +0.01 s   +0.6 %
                                                                                
  test4: eSDK metrics
           installer_bin size     1.05 GiB  ->  1.05 GiB       +4.0 kiB   +0.0 %
           deploy time              2:29.8  ->  2:29.7          -0.02 s   -0.0 %
           deploy_dir size        3.51 GiB  ->  3.51 GiB     +108.7 kiB   +0.0 %
                                                                                

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