[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:        52766                   52736               
Commit:               fef47bd915f6a3960e51    fe43e599327f26b399c1
Number of test runs:  16                      12                  

TEST RESULTS:
=============
  test1: Build core-image-sato
           build time              1:32:21  ->  1:32:42         +21.7 s   +0.4 %
           tmpdir size           33.90 GiB  ->  33.90 GiB     +6.43 MiB   +0.0 %
           rootfs size          240.85 MiB  ->  240.93 MiB    +83.9 kiB   +0.0 %
                                                                                
  test12: Build virtual/kernel
           build time               7:50.6  ->  7:56.0           +5.4 s   +1.1 %
                                                                                
  test13: Build core-image-sato with rm_work enabled
           build time              1:33:08  ->  1:33:32         +24.3 s   +0.4 %
           tmpdir size            6.58 GiB  ->  6.58 GiB      +3.60 MiB   +0.1 %
                                                                                
  test2: Run core-image-sato do_rootfs with sstate
           do_rootfs time           2:15.8  ->  2:22.2           +6.4 s   +4.7 %
                                                                                
  test3: Bitbake parsing (bitbake -p)
           parse_1 time             29.1 s  ->  30.0 s          +0.91 s   +3.1 %
           parse_2 time             19.0 s  ->  19.9 s          +0.86 s   +4.5 %
           parse_3 time              1.8 s  ->  1.8 s           +0.07 s   +3.9 %
                                                                                
  test4: eSDK metrics
           installer_bin size     1.25 GiB  ->  1.25 GiB     +465.7 kiB   +0.0 %
           deploy time              2:18.2  ->  2:24.1           +5.9 s   +4.2 %
           deploy_dir size        4.12 GiB  ->  4.12 GiB     +747.7 kiB   +0.0 %
                                                                                

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