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From: Slawa Olhovchenkov <slw@zxy.spb.ru>
To: Cy Schubert <Cy.Schubert@cschubert.com>
Cc: qroxana <qroxana@mail.ru>, freebsd-current@freebsd.org
Subject: Re: OpenZFS: kldload zfs.ko freezes on i386 4GB memory
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On Fri, Oct 30, 2020 at 04:00:55PM -0700, Cy Schubert wrote:

> > > > More stresses memory usually refers to performance penalty.
> > > > Usually way for better performance is reduce memory access.
> > > 
> > > The reason filesystems (UFS, ZFS, EXT4, etc.) cache is to avoid disk 
> > > accesses. Nanoseconds vs milliseconds.
> >
> > I mean compared ZoL ZFS ARC vs old (BSD/Opensolaris/Illumos) ZFS ARC.
> > Any reaason to rise ARC hit rate in ZoL case?
> 
> That's what hit rate is. It's a memory access instead of a disk access. 
> That's what you want.

Is ZoL ARC hit rate rise from FreeBSD ARC hit rate?