ZFS on FreeBSD 11.3 slower than 10.4

[mike tancsa]

On 5/23/2020 3:44 PM, Miroslav Lachman wrote:
> I upgraded my old desktop computer few month ago from old 10.4 based
> PC-BSD to stock FreeBSD 11.3. It uses single 2TB HDD 7200rpm.
> My problem is that upgraded version is really slow and some desktop
> applications are very lagging (playing multimedia is interrupted for a
> fraction of seconds) when there is heavy filesystem activity.
>
>
Is it possible some of the Intel CPU mitigations are causing some of the
slowdown ? They dont seem to be in 10x ? Maybe try disabling ?

https://wiki.freebsd.org/SpeculativeExecutionVulnerabilities

    ---Mike