Re: [LAU] performance problems after kernel/microcode update ?

PS: The microcode has not that much impact regarding Spectre mitigation, as I thought. [rocketmouse@archlinux ~]$ grep 'no micro' /boot/syslinux/syslinux.cfg -A4 MENU LABEL Arch Linux Rt Securityink no micro LINUX ../vmlinuz-linux-rt-securityink APPEND root=LABEL=s3.archlinux ro INITRD ../initramfs-linux-rt-securityink.img [rocketmouse@archlinux ~]$ ls -l /sys/devices/system/cpu/vulnerabilities/* -r--r--r-- 1 root root 4096 Sep 15 02:28 /sys/devices/system/cpu/vulnerabilities/l1tf -r--r--r-- 1 root root 4096 Sep 15 02:28 /sys/devices/system/cpu/vulnerabilities/meltdown -r--r--r-- 1 root root 4096 Sep 15 02:28 /sys/devices/system/cpu/vulnerabilities/spec_store_bypass -r--r--r-- 1 root root 4096 Sep 15 02:28 /sys/devices/system/cpu/vulnerabilities/spectre_v1 -r--r--r-- 1 root root 4096 Sep 15 02:28 /sys/devices/system/cpu/vulnerabilities/spectre_v2 [rocketmouse@archlinux ~]$ cat /sys/devices/system/cpu/vulnerabilities/* Mitigation: PTE Inversion; VMX: conditional cache flushes, SMT disabled Mitigation: PTI Vulnerable Mitigation: __user pointer sanitization Mitigation: Full generic retpoline ################################################################################################## [rocketmouse@archlinux ~]$ grep 'Securityink nopt^i' /boot/syslinux/syslinux.cfg -A4 MENU LABEL Arch Linux Rt Securityink nopt^i LINUX ../vmlinuz-linux-rt-securityink APPEND root=LABEL=s3.archlinux ro nopti INITRD ../intel-ucode.img,../initramfs-linux-rt-securityink.img [rocketmouse@archlinux ~]$ ls -l /sys/devices/system/cpu/vulnerabilities/* -r--r--r-- 1 root root 4096 Sep 15 02:33 /sys/devices/system/cpu/vulnerabilities/l1tf -r--r--r-- 1 root root 4096 Sep 15 02:33 /sys/devices/system/cpu/vulnerabilities/meltdown -r--r--r-- 1 root root 4096 Sep 15 02:33 /sys/devices/system/cpu/vulnerabilities/spec_store_bypass -r--r--r-- 1 root root 4096 Sep 15 02:33 /sys/devices/system/cpu/vulnerabilities/spectre_v1 -r--r--r-- 1 root root 4096 Sep 15 02:33 /sys/devices/system/cpu/vulnerabilities/spectre_v2 [rocketmouse@archlinux ~]$ cat /sys/devices/system/cpu/vulnerabilities/* Mitigation: PTE Inversion; VMX: conditional cache flushes, SMT disabled Vulnerable Mitigation: Speculative Store Bypass disabled via prctl and seccomp Mitigation: __user pointer sanitization Mitigation: Full generic retpoline, IBPB, IBRS_FW