Sun Oracle Sun Server X4-2 - Page 218

204 Sun Server X4-2 Service Manual • May 2014
TABLE: BIOS Advanced Menu Options
Setup Options Options Defaults Description
PROCESSORS Enable or disable processor
(CPU) features.
Hyper-threading Disabled/Enabled Enabled When enabled, two threads are
available per enabled core. When
disabled, only one thread per
enabled core is available.
Execute Disable Bit Disabled/Enabled Enabled When enabled, execute disable
bit can prevent certain classes of
malicious buffer overflow attacks
when combined with a
supporting OS (Oracle Solaris,
Oracle VM, Windows Server,
Red Hat Enterprise Linux, SUSE
Linux Enterprise Server, and
VMware ESXi).
Hardware Prefetcher Disabled/Enabled Enabled Enable the mid-level cache (L2)
streamer prefetcher.
Adjacent Cache Line
Prefetcher
Disabled/Enabled Enabled Enable the mid-level cache (L2)
prefetching of adjacent cache
lines.