[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:        49553                   49519               
Commit:               f49ee61422c867516db2    674cdda1b973f87f5adb
Number of test runs:  18                      16                  

TEST RESULTS:
=============
  test1: Build core-image-sato
           build time              1:19:58  ->  1:19:59          +1.3 s   +0.0 %
           tmpdir size           30.93 GiB  ->  30.94 GiB    +11.08 MiB   +0.0 %
           rootfs size          224.90 MiB  ->  224.90 MiB     +1.0 kiB   +0.0 %
                                                                                
  test12: Build virtual/kernel
           build time               7:04.3  ->  7:04.6          +0.32 s   +0.1 %
                                                                                
  test13: Build core-image-sato with rm_work enabled
           build time              1:21:44  ->  1:21:52          +8.3 s   +0.2 %
           tmpdir size            6.08 GiB  ->  6.08 GiB      +2.60 MiB   +0.0 %
                                                                                
  test2: Run core-image-sato do_rootfs with sstate
           do_rootfs time           2:03.4  ->  2:03.3          -0.08 s   -0.1 %
                                                                                
  test3: Bitbake parsing (bitbake -p)
           parse_1 time             27.6 s  ->  27.7 s          +0.08 s   +0.3 %
           parse_2 time             17.3 s  ->  17.3 s          -0.03 s   -0.2 %
           parse_3 time              1.7 s  ->  1.7 s           -0.00 s   -0.1 %
                                                                                
  test4: eSDK metrics
           installer_bin size     1.05 GiB  ->  1.05 GiB     +551.9 kiB   +0.1 %
           deploy time              2:29.8  ->  2:29.7          -0.03 s   -0.0 %
           deploy_dir size        3.51 GiB  ->  3.51 GiB      +2.27 MiB   +0.1 %
                                                                                

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