[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:        52907                   52876               
Commit:               4dd51032160897be4132    fd045373e01409e27347
Number of test runs:  8                       3                   

TEST RESULTS:
=============
  test1: Build core-image-sato
           build time              1:31:00  ->  1:30:56           -3.8 s   -0.1 %
           tmpdir size           33.48 GiB  ->  33.59 GiB    +113.61 MiB   +0.3 %
           rootfs size          241.09 MiB  ->  241.12 MiB     +29.5 kiB   +0.0 %
                                                                                 
  test12: Build virtual/kernel
           build time               7:55.5  ->  7:55.9           +0.44 s   +0.1 %
                                                                                 
  test13: Build core-image-sato with rm_work enabled
           build time              1:31:47  ->  1:31:40           -7.0 s   -0.1 %
           tmpdir size            6.41 GiB  ->  6.42 GiB      +12.22 MiB   +0.2 %
                                                                                 
  test2: Run core-image-sato do_rootfs with sstate
           do_rootfs time           2:21.2  ->  2:23.0            +1.9 s   +1.3 %
                                                                                 
  test3: Bitbake parsing (bitbake -p)
           parse_1 time             29.9 s  ->  30.9 s            +1.0 s   +3.4 %
           parse_2 time             19.8 s  ->  20.6 s           +0.85 s   +4.3 %
           parse_3 time              1.8 s  ->  1.8 s            +0.01 s   +0.7 %
                                                                                 
  test4: eSDK metrics
           installer_bin size     1.25 GiB  ->  1.25 GiB      +390.2 kiB   +0.0 %
           deploy time              2:24.2  ->  2:26.0            +1.8 s   +1.2 %
           deploy_dir size        4.12 GiB  ->  4.12 GiB       +3.04 MiB   +0.1 %
                                                                                 

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