Copyright © 2011, 2014, Oracle and/or its affiliates. All rights reserved. Legal Notices
When you install Oracle VM Server, the installer sets a default memory size for Dom0. The algorithm used is:
dom0_mem = 502 + int(physical_mem * 0.0205)
Example sizes are set out in table Table 2.1.
Table 2.1 Default Dom0 Memory Size
Physical Memory | Dom0 Memory |
|---|---|
2 GB | 560 MB |
4 GB | 600 MB |
8 GB | 680 MB |
16 GB | 848 MB |
32 GB | 1184 MB |
64 GB | 1856 MB |
128 GB | 4000 MB |
256 GB | 5888 MB |
512 GB | 11264 MB |
1024 GB | 22008 MB |
2048 GB | 43504 MB |
You may encounter performance issues if the dom0 memory size is not set appropriately for your needs on the Oracle VM Server.
To change the Dom0 memory allocation, edit the /boot/grub/grub.conf file on the Oracle VM Server and change the dom0_mem parameter, for example, to change the memory allocation to 1024 MB, edit the file to be:
kernel /xen.gz console=com1,vga com1=38400,8n1 dom0_mem=1024M
Copyright © 2011, 2014, Oracle and/or its affiliates. All rights reserved. Legal Notices