Date: Mon, 16 Jul 2018 18:20:07 +0000 From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 229670] ZFS ARC limit vfs.zfs.arc_max from /boot/loader.conf is not respected Message-ID: <bug-229670-227-vrARqXCWe5@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-229670-227@https.bugs.freebsd.org/bugzilla/> References: <bug-229670-227@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D229670 Josh Paetzel <jpaetzel@FreeBSD.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |jpaetzel@FreeBSD.org --- Comment #6 from Josh Paetzel <jpaetzel@FreeBSD.org> --- The 1GB per TB rule is a stab at how much RAM is needed to cache the working set and deliver RAM like read performance. It's not really intended to indicate how much RAM you need to operate a poo= l.=20 (I've imported and used 1PB pools on heads with 32GB of RAM before) The only real linear limit I know of is datasets/zvols consume ~ 1MB/RAM ea= ch. So a system with 4000 datasets would need ~ 4GB RAM just for the dataset metadata. --=20 You are receiving this mail because: You are the assignee for the bug.=
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