From owner-freebsd-questions  Thu Oct 19 14:11: 6 2000
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Date: Thu, 19 Oct 2000 14:11:03 -0700
From: Jon Rust <jpr@vcnet.com>
To: freebsd-questions@freebsd.org
Subject: PMAP_SHPGPERPROC and vm.v_free_
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from LINT on 4.1.1-STABLE (built last night)

>>>
  Set the number of PV entries per process.  Increasing this can
  stop panics related to heavy use of shared memory. However, that can
  (combined with large amounts of physical memory) cause panics at
  boot time due the kernel running out of VM space.
 
  If you're tweaking this, you might also want to increase the sysctls
  "vm.v_free_min", "vm.v_free_reserved", and "vm.v_free_target".
<<<

Are any guidelines available here? If I increase the PMAP_SHPGPERPROC
value by 200 (to 400), what should I increase the vm.v_free_* values to?
Currently they are:

   vm.v_free_reserved: 164
   vm.v_free_min: 481
   vm.v_free_target: 1607

Any pointers greatly appreciated.

Jon


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