Hi.
** this discussion is for i386 architectures **
I think there is some unclearness on the description
about VM subsystem coloring in NOTES (formerly called LINT).
Currently,
# Options for the VM subsystem
#options PQ_NOOPT # No coloring
options PQ_LARGECACHE # color for 512k/16k cache
#options PQ_HUGECACHE # color for 1024k/16k cache
#options PQ_MEDIUMCACHE # color for 64k/16k cache
#options PQ_NORMALCACHE # color for 256k/16k cache
But, in /sys/vm/vm_page.h, PQ_PRIME1, PQ_PRIME2, PQ_L2_SIZE are
defined as below.
PQ_NOOPT defines 1/1/1 to disable coloring
PQ_LARGECACHE defines 31/23/128 for 512k cache
PQ_HUGECACHE defines 31/23/256 for 1M cache
PQ_MEDIUMCACHE defines 13/7/64 for 256k cache
PQ_NORMALCACHE defines 5/3/16 for 64k cache
and, on the default, these parameters are defined as 9/5/32.
NOTES has obviously incorrect description about MEDIUM and NORMAL
case, and there are no discription about the default coloring.
Yes, this situation arise from its incomprehensive name.
I suggest that these options should be renamed as follows:
currently -> candidate
PQ_HUGECACHE PQ_CACHE1024
PQ_LARGECACHE PQ_CACHE512
PQ_MEDIUMCACHE PQ_CACHE256
PQ_NORMALCACHE PQ_CACHE64
and newly PQ_CACHE128 should be defined as default.
Any ideas?
--
Motomichi Matsuzaki <[EMAIL PROTECTED]>
Dept. of Biological Sciences, Grad. School of Science, Univ. of Tokyo, Japan
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