DragonFly BSD
DragonFly commits List (threaded) for 2010-03
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Re: git: kernel - Fix cluster_read random I/O heuristic


From: Matthew Dillon <dillon@xxxxxxxxxxxxxxxxxxxx>
Date: Sun, 28 Mar 2010 11:56:15 -0700 (PDT)

    The cluster fix for random I/O's is turning out to be a pretty
    serious performance fix for programs doing a lot of random I/O,
    like postgres.  Not only does it fix the disk I/O performance but
    I am getting reports that it also reduces the VM load (since it is
    caching less read-ahead data that is never accessed).

						-Matt



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