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From: Marcel Moolenaar <marcel@FreeBSD.org>
Date: Mon, 7 Dec 2009 00:54:02 +0000 (UTC)
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Subject: cvs commit: src/sys/ia64/ia64 mp_machdep.c pmap.c
 src/sys/ia64/include param.h pcpu.h pmap.h
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marcel      2009-12-07 00:54:02 UTC

  FreeBSD src repository

  Modified files:
    sys/ia64/ia64        mp_machdep.c pmap.c 
    sys/ia64/include     param.h pcpu.h pmap.h 
  Log:
  SVN rev 200200 on 2009-12-07 00:54:02Z by marcel
  
  Allocate the VHPT for each CPU in cpu_mp_start(), rather than
  allocating MAXCPU VHPTs up-front. This allows us to max-out MAXCPU
  without memory waste -- MAXCPU is now 32 for SMP kernels.
  
  This change also eliminates the VHPT scaling based in the total
  memory in the system. It's the workload that determines the best size
  of the VHPT. The workload can be affected by the amount of memory,
  but not necessarily. For example, there's no performance difference
  between VHPT sizes of 256KB, 512KB and 1MB when building the LINT
  kernel. This was observed with a system that has 8GB of memory.
  By default the kernel will allocate a 1MB VHPT. The user can tune the
  system with the "machdep.vhpt.log2size" tunable.
  
  Revision  Changes    Path
  1.76      +10 -4     src/sys/ia64/ia64/mp_machdep.c
  1.208     +62 -72    src/sys/ia64/ia64/pmap.c
  1.34      +1 -1      src/sys/ia64/include/param.h
  1.24      +1 -0      src/sys/ia64/include/pcpu.h
  1.30      +1 -0      src/sys/ia64/include/pmap.h