Re: vm.ubc_direct

[Patrick Welche <prlw1%cam.ac.uk@localhost>]

On Thu, Nov 14, 2019 at 03:44:54PM +0200, Andreas Gustafsson wrote:
> Patrick Welche wrote:
> > I have been running with vm.ubc_direct=1 and feeling a speedup and no
> > inconveniences on multicore systems. What are thoughts on having it as
> > a default?
> 
> No such option is documented, hence the question makes no sense.


It is part of:

  http://gnats.netbsd.org/53124

A Ryzen was painfully slow, and I just noticed the difference on a 24-core
machine which prompted the note.


Cheers,

Patrick