Windows 7 Virtualbox Base Memory
Oleta Blaylock
So clearly, there are some huge differences here. I really don't understand how the GuestOS can use 400+ MB, while the Host OS only shows about 75 MB allocated to the VM. Are there other processes used by VirtualBox that aren't as obviously named?
Someone expressed distrust over my memory usage numbers, and I'm not sure if that distrust was directed at me, or my Host OS's Task Manager's reporting (which is perhaps the culprit), but for any skeptics, here is a screenshot of those processes on the host machine:
Once you start a virtual machine (VM) from the GUI, you have two windows (the main window and the VM), but three processes running. Looking at your system from Task Manager (on Windows) or some system monitor (on Linux), you will see these:
Allocating memory as required is an optimization that can save a lot on physical memory, but memory-intensive processes in the VM may be slowed down by the frequent need by VirtualBox to request more host memory.
The only place in Task Manager that seems to reflect the full amount is on the performance tab - the Total Commit Charge value roughly keeps pace with the amount allocated to the VM. I just closed one with 1536MB allocated, and the commit charge went down from about 2.4GB to 0.8GB.You can monitor to some extent this against Virtual Box using the Performance Monitor, and choosing the Process : Private Bytes counters for VirtualBox, VBoxSvc, and also VirtualBox#1, #2, etc (one for each running VM). There's also the Memory : Committed Bytes counter for everything.
Those entries you see in TaskManager are not for your virtual machine, they are for the VirtualBox GUI. The performance tab will clearly show you how much of your total memory is being used, but with no granularity regarding processes. I personally would like to see VBox use only what it needs, but agree it's important for it to be able to use as much as it expects, hence the ring-fencing.
It will reserve 1GB of RAM, however it may wind up actually using significantly less than that. If the guest doesn't use some of that memory, host RAM can be used for many other purposes (such as caching clean disk pages), even though it's reserved for the guest. And even if the guest does use some of that memory, if it doesn't access it for sufficiently long, it can still get ejected from physical memory through opportunistic swapping.
Few months old now but i hit this problem today and followed the blog you linked to to get around this. My machine is running docker toolbox on windows 10. Edit the file C:\Program Files\Docker Toolbox\start.sh at line 60ish. Replace...
Does this mean I have to delete the current machine from docker-machine and restart the entire procedure of setting up a new machine and then allocating more memory to it and the redownloading and reinstalling ALL of WebODM?
This chapter provides detailed steps for configuring an Oracle VM VirtualBox virtual machine (VM). For an introduction to Oracle VM VirtualBox and steps to get your first virtual machine running, see Chapter1, First Steps.
You have considerable latitude when deciding what virtual hardware to provide to the guest. Use virtual hardware to communicate with the host system or with other guests. For example, you can use virtual hardware in the following ways:
Oracle VM VirtualBox is the first product to provide the modern PC architecture expected by OS X without requiring any of the modifications used by competing virtualization solutions. For example, some competing solutions perform modifications to the Mac OS X install DVDs, such as a different boot loader and replaced files.
Mac OS X is commercial, licensed software and contains both license and technical restrictions that limit its use to certain hardware and usage scenarios. You must understand and comply with these restrictions.
These license restrictions are also enforced on a technical level. Mac OS X verifies that it is running on Apple hardware. Most DVDs that accompany Apple hardware check for the exact model. These restrictions are not circumvented by Oracle VM VirtualBox and continue to apply.
Only CPUs that are known and tested by Apple are supported. As a result, if your Intel CPU is newer than the Mac OS X build, or if you have a non-Intel CPU, you will likely encounter a panic during bootup with an "Unsupported CPU" exception.
The Mac OS X installer expects the hard disk to be partitioned. So, the installer will not offer a partition selection to you. Before you can install the software successfully, start the Disk Utility from the Tools menu and partition the hard disk. Close the Disk Utility and proceed with the installation.
The installation operation changes the boot device order to boot the virtual hard disk first and then the virtual DVD drive. If the virtual hard disk is empty prior to the automatic installation, the VM boots from the virtual DVD drive and begins the installation.
The following example shows how to perform an unattended guest installation for an Oracle Linux VM. The example uses various VBoxManage commands to prepare the guest VM. The VBoxManage unattended install command is then used to install and configure the guest OS.
USB. Oracle VM VirtualBox emulates these types of USB host controllers: xHCI, EHCI, and OHCI. While xHCI handles all USB transfer speeds, some legacy guest OSes may not support xHCI. Note that for some legacy Windows guests, third party drivers must be installed for xHCI support.
Legacy guest OSes typically support OHCI and EHCI. These two controllers are needed because OHCI only handles USB low-speed and full-speed devices (both USB 1.x and 2.0), while EHCI only handles high-speed devices (USB 2.0 only).
The emulated USB controllers do not communicate directly with devices on the host. Instead they communicate with a virtual USB layer which abstracts the USB protocol and enables the use of remote USB devices.
In the Settings window, under General, you can configure the most fundamental aspects of the virtual machine such as memory and essential hardware. The following tabs are available.
Name: The name of the the VM, as shown in the list of VMs in the main VirtualBox Manager window. Using this name, Oracle VM VirtualBox also saves the VM's configuration files. If you change the name, Oracle VM VirtualBox renames these files as well. As a result, you can only use characters which are allowed for file names on your host OS.
Shared Clipboard: You can select here whether the clipboard of the guest OS should be shared with that of your host. If you select Bidirectional, then Oracle VM VirtualBox will always make sure that both clipboards contain the same data. If you select Host to Guest or Guest to Host, then Oracle VM VirtualBox will only ever copy clipboard data in one direction.
For security reasons, the shared clipboard is disabled by default. This setting can be changed at any time using the Shared Clipboard menu item in the Devices menu of the virtual machine.
Drag and Drop: This setting enables support for drag and drop. Select an object, such as a file, from the host or guest and directly copy or open it on the guest or host. Multiple drag and drop modes for a VM enable restricting of access in either direction.
On the Description tab you can enter a description for your virtual machine. This has no effect on the functionality of the machine, but you may find this space useful to note down things such as the configuration of a virtual machine and the software that has been installed into it.
As the activation mechanism of Microsoft Windows is sensitive to hardware changes, if you are changing hardware settings for a Windows guest, some of these changes may trigger a request for another activation with Microsoft.
Boot Order: Determines the order in which the guest OS will attempt to boot from the various virtual boot devices. Analogous to a real PC's BIOS setting, Oracle VM VirtualBox can tell a guest OS to start from the virtual floppy, the virtual CD/DVD drive, the virtual hard drive (each of these as defined by the other VM settings), the network, or none of these.
Chipset: You can select which chipset will be presented to the virtual machine. PIIX3 is the default chipset for most guests. For some guest OSes such as Mac OS X, the PIIX3 chipset is not well supported. As a result, Oracle VM VirtualBox supports an emulation of the ICH9 chipset, which supports PCI express, three PCI buses, PCI-to-PCI bridges and Message Signaled Interrupts (MSI). This enables modern OSes to address more PCI devices and no longer requires IRQ sharing. Using the ICH9 chipset it is also possible to configure up to 36 network cards, compared to a maximum of eight network adapters with PIIX3. Note that ICH9 support is experimental and not recommended for guest OSes which do not require it.
Pointing Device: The default virtual pointing device for some guest OSes is the traditional PS/2 mouse. If set to USB Tablet, Oracle VM VirtualBox reports to the virtual machine that a USB tablet device is present and communicates mouse events to the virtual machine through this device. Another setting is USB Multi-Touch Tablet, which is suitable for guests running Windows 8 or later.
Enable I/O APIC: Advanced Programmable Interrupt Controllers (APICs) are an x86 hardware feature that have replaced Programmable Interrupt Controllers (PICs). With an I/O APIC, OSes can use more than 16 interrupt requests (IRQs) and therefore avoid IRQ sharing for improved reliability.
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