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boot_vm16fs(4)


boot_vm16fs -- boot parameters

Description

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

LI "CACHE_LINE=number" 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.

PAGE_BINS=number
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 used. 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 ``32768'' (32GB).

References

boot(1M), boot(4), asyc(7)
© 2004 The SCO Group, Inc. All rights reserved.
UnixWare 7 Release 7.1.4 - 25 April 2004