Date: Fri, 07 Sep 2018 06:59:26 +0000 From: bugzilla-noreply@freebsd.org To: virtualization@FreeBSD.org Subject: [Bug 231117] I/O lockups inside bhyve vms Message-ID: <bug-231117-27103-DiiPka7Fcy@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-231117-27103@https.bugs.freebsd.org/bugzilla/> References: <bug-231117-27103@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D231117 punkt.de Hosting Team <mops@punkt.de> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |mops@punkt.de --- Comment #2 from punkt.de Hosting Team <mops@punkt.de> --- Hi Niels, being more of an operator than a developer I don't have any insight into the root cause of this, but we run a ton of jails and a couple of bhyve VMs on FreeBSD in production and we found that * The automatic adjustment of ARC size under memory pressure is still not working perfectly. * It helps to statically limit the ARC size (vfs.zfs.arc_max) on the host system - we use a quarter of physical memory, so VMs have some breathing ro= om. * I would definitely limit the ARC size inside each VM * Are you running the virtual disks as AHCI or virtio? We use virtio throughout. HTH Patrick --=20 You are receiving this mail because: You are the assignee for the bug.=
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