git: bioq - Add a sysctl kern.bioq_barrier to control bioqdisksort()'s sorting.

[Matthew Dillon <dillon@xxxxxxxxxxxxxxxxxxxxxxx>]

commit ef5488790dfc78207b3ed0e9ef063443736624d0
Author: Matthew Dillon <dillon@apollo.backplane.com>
Date:   Sat Aug 8 19:35:19 2009 -0700

    bioq - Add a sysctl kern.bioq_barrier to control bioqdisksort()'s sorting.
    
    Control how well sorted we want bioqdisksort() to be.  The value specified
    in kern.bioq_barrier is the number of bio's that will be sorted until a
    barrier is inserted, starting a new set.  The default value is 16.
    
    This allows testing filesystem throughput under varying conditions.
    
    Suggested-by: Jeffrey Hsu <hsu@dragonflybsd.org>

Summary of changes:
 sys/kern/subr_disk.c |   10 +++++++++-
 1 files changed, 9 insertions(+), 1 deletions(-)

http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/ef5488790dfc78207b3ed0e9ef063443736624d0


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