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From: Alexander Motin <mav@FreeBSD.org>
Date: Fri, 15 Jan 2010 23:54:14 +0000 (UTC)
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X-FreeBSD-CVS-Branch: RELENG_7
Subject: cvs commit: src/sbin/geom/class/stripe geom_stripe.c
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mav         2010-01-15 23:54:14 UTC

  FreeBSD src repository

  Modified files:        (Branch: RELENG_7)
    sbin/geom/class/stripe geom_stripe.c 
  Log:
  SVN rev 202426 on 2010-01-15 23:54:14Z by mav
  
  MFC r201658:
  Increase default block size from 4K to 64K. It was reduces 6 yeard ago,
  when trees were big and FAST mode was enabled by default.
  
  So small block size doesn't benefits linear I/O operations in FAST and
  significantly slowdowns in ECONOMIC (default) mode. For single stream random
  I/Os so small block doesn't give much benefits, as access time is usually
  bigger then transfer time there. Same time it requires all heads to seek
  together for every single request, reducing performance on parallel load.
  
  Revision  Changes    Path
  1.16.2.1  +1 -1      src/sbin/geom/class/stripe/geom_stripe.c