Oracle Sun Fire X4800, Product Notes

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Earlier Versions of Oracle VM Only Support 64 Logical CPUs (CR 6915014)
2. If you continue to experience I/O resource issues, see I/O and Interrupt Resource Allocation
in Sun Fire X4800 Server Installation Guide .
Earlier Versions of Oracle VM Only Support 64 Logical
CPUs (CR 6915014)
Earlier versions of Oracle VM (2.2. x ) support 64 logical CPUs. An 8–socket system with
hyperthreading enabled has 128 logical CPUs.
Workaround
Disable hyperthreading in the BIOS.
Oracle VM Server Installation Parameters Required on Sun
Fire X4800 (CR 7094126)
To allow the megaraid_sas driver to load correctly you must add parameters to Oracle VM:
■
When installing Oracle VM 2.x , add the following kernel parameters:
mboot.c32 xen.gz extra_guest_irqs=64,2048 nr_irqs=2048 --- vmlinuz --- initrd.img
■
If booting from the installation media, press F2 when the initial boot screen is displayed
and add the above parameters to the boot command.
■
If using a kickstart installation, add the above parameters to the PXE configuration file.
■
For all Oracle VM installations , edit the
/boot/grub/grub.conf
file in your Oracle VM
Server and add:
extra_guest_irqs=64,2048 nr_irqs=2048
62 Sun Fire X4800 Server Product Notes • July 2017