The Data Center Feature Supplement adds the following parameters to
the list of parameters that
can be displayed and changed using the Boot Command Processor
(BCP) command described on .CM boot 1M .
Parameters recognized by the kernel
Set this parameter to specify the size of the L1 cache line (in bytes)
of whichever processor cache has the greatest cache line size.
Its purpose is to
segregate the bin locks into separate cache lines.
The default, 128, is taken from cache information
provided by the processor itself.
It may improve advantageous to adjust this value if an external
cache of greater cache line size is used, or if a new processor, unknown
to the kernel, is used.
Set this paramter to specify the number of separate bins from which
free pages are allocated.
Its purpose is to optimize allocation of pages.
The minimum value is 32, the default is 128,
and is taken from cache information provided
by the processor itself.
It may be advantageous to raise the value if a large external
cache is used, or if a new processor, unknown to the kernel, is
The proper formula for computing this should be:
MAX [cachesize/PAGESIZE/associativity] (over all caches)
In addition, the default value of the parameter
GEN_MEM_MAX=memsize has changed to
© 2004 The SCO Group, Inc. All rights reserved.
UnixWare 7 Release 7.1.4 - 25 April 2004