FreeBSD 13.0-BETA2 and slow IO

[Konstantin Belousov]

On Tue, Feb 16, 2021 at 12:54:55PM +0200, Christos Chatzaras wrote:
> 
> > On 16 Feb 2021, at 12:20, Christos Chatzaras <chris at cretaforce.gr> wrote:
> > 
> > I build a test system with 13.0-BETA2 and it's very slow with at least IO.
> > 
> > Doing "portsnap auto" takes much more time than 12.2.
> > 
> > Also when I do "rm -fr /usr/ports" with 12.2 takes 5 seconds and the same command with 13.0-BETA2 takes 100 seconds.
> > 
> > The disks are similar 4TB HDD drives on both systems.
> > 
> > Is this related to debug enabled in 13.0-BETA2?
> 
> I install 12.2 in the same system and "rm -fr /usr/ports" was fast. So it's not related to hardware.
> 
> If I upgrade it to 13.0-BETA2 the same command is slow again.

Are you using UFS+SU or SU+J?  If yes, this is known and fix is planned
for BETA3 or BETA4.