 - Tune down read_max.  For single disks we get no gain out of reading more    than a MAXPHYS size block ahead.  Having this set too high just leaves    other processes starved for IO and screws up interactive response.  Let the    users with RAID set it higher when they need it.
 - Tune down read_max.  For single disks we get no gain out of reading more
   than a MAXPHYS size block ahead.  Having this set too high just leaves
   other processes starved for IO and screws up interactive response.  Let the
   users with RAID set it higher when they need it.

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