freebsd-dev/sys/boot/common/Makefile.inc
Mike Smith af1f6e0673 Implement a simple LRU block cache. By default this is initialised to 16k,
and will bypass transfers for more than 8k.  Blocks are invalidated after
2 seconds, so removable media should not confuse the cache.

The 8k threshold is a compromise; all UFS transfers performed by
libstand are 8k or less, so large file reads thrash the cache.
However many filesystem metadata operations are also performed using
8k blocks, so using a lower threshold gives poor performance.

Those of you with an eye for cache algorithms are welcome to tell me
how badly this one sucks; you can start with the 'bcachestats' command
which will print the contents of the cache and access statistics.
1998-11-02 23:28:11 +00:00

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Makefile

# $Id: Makefile.inc,v 1.6 1998/09/30 19:38:26 peter Exp $
SRCS+= bcache.c boot.c commands.c console.c devopen.c interp.c
SRCS+= interp_backslash.c interp_parse.c load_aout.c load_elf.c ls.c misc.c
SRCS+= module.c panic.c
# Machine-independant ISA PnP
.if HAVE_ISABUS
SRCS+= isapnp.c
.endif
.if HAVE_PNP
SRCS+= pnp.c
.endif