CPU脆弱性対策無効化
echo 0 > /sys/kernel/debug/x86/pti_enabled echo 0 > /sys/kernel/debug/x86/retp_enabled echo 0 > /sys/kernel/debug/x86/ibrs_enabled
同じCPU「Intel(R) Xeon(R) CPU E5645 @ 2.40GHz」でもKernelによって、だいぶスコアが違う
※1コアで計測
→3.10.0-123.el7.x86_64 System Benchmarks Index Score 1568.0 →3.10.0-229.1.2.el7.centos.plus.x86_64 System Benchmarks Index Score 1613.6 →3.10.0-693.11.6.el7.centos.plus.x86_64 →× System Benchmarks Index Score 500.3 ↓ptiのみ System Benchmarks Index Score 538.4 ↓pti,retp,ibrs System Benchmarks Index Score 1245.4