[LAU] Meltdown – Spectre

Hi, did anybody already compared the latest patched Ubuntu kernels after booting with and without "nokaiser"? I don't have time to test if booting with or without "nokaiser" makes a difference on performance, such SSD access, DSP load or what ever else [1]. IUUC the KAISER patch set covers Meltdown, but Spectre is covered by upgrading the package "intel-microcode" [2]. A subscriber of freebsd-questions(a)freebsd.org send me off-list a German link about SSD performance issues on Windows machines, caused by fixing the Meltdown and Spectre issue [3]. However, until now I only added a new menu entry to my bootloader's config [4], but only had time to boot one time using the other menu entry without "nokaiser" and without running an audio session or doing any kind of performance test at all. Regards, Ralf [1] https://lists.ubuntu.com/archives/ubuntu-users/2018-January/293180.html [2] https://usn.ubuntu.com/usn/usn-3531-1/ [3] https://www.heise.de/newsticker/meldung/Intel-Benchmarks-zu-Meltdown-Spectr… [4] Sorry, I'm not using GRUB. [rocketmouse@archlinux ~]$ grep \ nokaiser /boot/syslinux/syslinux.cfg APPEND root=LABEL=moonstudio ro nokaiser -- $ hwinfo --cpu --short | sort -u cpu: Intel(R) Celeron(R) CPU G1840 @ 2.80GHz, 2793 MHz $ pacman -Q linux{,-rt{,-cornflower,-pussytoes}}|awk '{print $2}' 4.14.13-1 4.14.12_rt10-1 4.11.12_rt16-1 4.14.8_rt9-2