Date: Sat, 17 Mar 2018 10:57:32 +0000 From: bugzilla-noreply@freebsd.org To: freebsd-bugs@FreeBSD.org Subject: [Bug 226673] real memory > physical memory (amd64 Virtualbox guest) Message-ID: <bug-226673-8@https.bugs.freebsd.org/bugzilla/>
next in thread | raw e-mail | index | archive | help
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D226673 Bug ID: 226673 Summary: real memory > physical memory (amd64 Virtualbox guest) Product: Base System Version: 11.1-STABLE Hardware: amd64 OS: Any Status: New Severity: Affects Only Me Priority: --- Component: bin Assignee: freebsd-bugs@FreeBSD.org Reporter: freebsd@oldach.net For some reason, an 11-STABLE amd64 system running under VirtualBox reports more physical memory than allocated by the host. For example, an allocation= of 4096 MB physical memory by VirtualBox results in: FreeBSD 11.1-STABLE #0 r330790: Fri Mar 16 20:51:59 CET 2018 root@latitude.local:/usr/obj/amd64.amd64/usr/src/sys/GENERIC amd64 ... real memory =3D 4831838208 (4608 MB) avail memory =3D 4104138752 (3914 MB) sysctl also reports an odd value for hw.realmem: hw.physmem: 4260958208 hw.usermem: 4167311360 hw.realmem: 536870912 All figures are OK when running an i386 kernel in the same VM (but of course lower than in amd64 mode): FreeBSD 11.1-STABLE #0 r330790: Mon Mar 12 08:56:08 CET 2018 toor@latitude.local:/usr/obj/usr/src/sys/HMO i386 ... real memory =3D 3758030848 (3583 MB) avail memory =3D 3678859264 (3508 MB) hw.physmem: 3744882688 hw.usermem: 3710955520 hw.realmem: 3758030848 And also when reducing memory allocation from 4096 MB to 3072 MB the amd64 figures are sensible: FreeBSD 11.1-STABLE #0 r330790: Fri Mar 16 20:51:59 CET 2018 root@latitude.local:/usr/obj/amd64.amd64/usr/src/sys/GENERIC amd64 ... real memory =3D 3221159936 (3071 MB) avail memory =3D 3079446528 (2936 MB) hw.physmem: 3187220480 hw.usermem: 3106312192 hw.realmem: 3221159936 --=20 You are receiving this mail because: You are the assignee for the bug.=
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?bug-226673-8>