Package: virtualbox Version: 5.2.10-dfsg-6~bpo9+1 Severity: normal Dear Maintainer,
I installed VirtualBox 5.2 and when I/O cache is switched on, IO is very slow. Steps to reproduce: 1. Create a virtual machine with Debian or Ubuntu 2. Switch "Use Host I/O Cache" on, on SATA controller. 3. Try to upgrade existing packages or install new in the virtial machine. I have spinning disks on my host computer and they become noisy and IO speed is between 900KB/s and 1.3 MB/s during installation or upgrade of packages. I had no such problem with VirtualBox 5.1. Kind regards Georgi -- System Information: Debian Release: 9.4 APT prefers stable-updates APT policy: (500, 'stable-updates'), (500, 'stable') Architecture: amd64 (x86_64) Kernel: Linux 4.9.0-6-amd64 (SMP w/4 CPU cores) Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE=en_US:en (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Init: systemd (via /run/systemd/system) Versions of packages virtualbox depends on: ii adduser 3.115 ii init-system-helpers 1.48 ii iproute2 4.9.0-1+deb9u1 ii libc6 2.24-11+deb9u3 ii libcurl3-gnutls 7.52.1-5+deb9u5 ii libdevmapper1.02.1 2:1.02.137-2 ii libgcc1 1:6.3.0-18+deb9u1 ii libgsoap10 2.8.35-4+deb9u1 ii libopus0 1.2~alpha2-1 ii libpng16-16 1.6.28-1 ii libpython3.5 3.5.3-1 ii libsdl1.2debian 1.2.15+dfsg1-4 ii libssl1.1 1.1.0f-3+deb9u2 ii libstdc++6 6.3.0-18+deb9u1 ii libvncserver1 0.9.11+dfsg-1 ii libvpx4 1.6.1-3+deb9u1 ii libx11-6 2:1.6.4-3 ii libxcursor1 1:1.1.14-1+deb9u1 ii libxext6 2:1.3.3-1+b2 ii libxml2 2.9.4+dfsg1-2.2+deb9u2 ii libxmu6 2:1.1.2-2 ii libxt6 1:1.1.5-1 ii procps 2:3.3.12-3 ii python3 3.5.3-1 ii python3.5 3.5.3-1 ii virtualbox-dkms [virtualbox-modules] 5.2.10-dfsg-6~bpo9+1 ii zlib1g 1:1.2.8.dfsg-5 Versions of packages virtualbox recommends: ii libgl1-mesa-glx [libgl1] 13.0.6-1+b2 ii libqt5core5a 5.7.1+dfsg-3+b1 ii libqt5opengl5 5.7.1+dfsg-3+b1 ii libqt5widgets5 5.7.1+dfsg-3+b1 ii virtualbox-qt 5.2.10-dfsg-6~bpo9+1 Versions of packages virtualbox suggests: pn vde2 <none> pn virtualbox-guest-additions-iso <none> -- no debconf information
