On Mon, Dec 30, 2019 at 08:55:14AM -0700, Warner Losh wrote:
> On Mon, Dec 30, 2019, 5:32 AM Alexey Dokuchaev wrote:
> > On Sun, Dec 29, 2019 at 09:16:04PM +0000, Alexander Motin wrote:
> > > New Revision: 356185
> > > URL: https://svnweb.freebsd.org/changeset/base/356185
> > >
> > > Log:
> > >   Remove GEOM_SCHED class and gsched tool.
> > >   [...]
> >
> > Wow, that was unexpected, I use it on all my machines' HDD drives.
> > Is there a planned replacement, or I'd better create a port for the
> > GEOM_SCHED class and gsched(8) tool?
> 
> How much of a performance improvement do you see with it?
> 
> There has been no tweaks to this geom in years and years. It was tuned
> to 10 year old hard drives and never retuned for anything newer.

Well, hard drives essentially didn't change since then, still being the
same roration media. :)

> And when I played with it a few years ago, I saw no improvements...

Admittedly, I've only did some tests no later than in 8.4 times when I
first started using it.  Fair point, though, I should redo them again.

./danfe
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