各内核版本意思.

 ::= 2.4.9-e.
    ::= 
    ::= {smp|enterprise|summit}

Types:

Examples:

 ::= 2.4.21-EL
    ::= .|{}
    ::= {smp|hugemem}

Types:

Examples:

* On different hardware platforms, if there is no type, the kernel might be SMP already.

 ::= 2.6.9-.EL
     ::= .{.}
    ::= {smp|hugemem|largesmp|xenU}

Types:

* On different hardware platforms, if there is no type, the kernel might be SMP already.

Examples:

 ::= 2.6.18-.el5
    ::= .{.}
    ::= {PAE|xen}

Types:

none: SMP kernel
PAE: Over 4GB of RAM (up to 64GB for the x86) - Physical Address Extension or 3-level paging on x86 processors that support PAE
xen: Kernel that can run virtualized guests

bigsmp和smp

smp 应该是symmetric multiple processors对称多处理器，支持多cpu的

big是支持大内存的

bigsmp=big+smp，既支持big，又支持smp。big一般指4G以上或64G以上的内存。

ITPub博客

RHEL 各内核版本意思.