VX_CONCURRENT flag on vxfs( 5.1 or later) for performance for postgresql?

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HSIEN-WEN CHU
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VX_CONCURRENT flag on vxfs( 5.1 or later) for performance for postgresql?
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BANLkTinBLhq8mYyeVupWz5J02OWfbTK_nA@mail.gmail.com
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VX_CONCURRENT flag on vxfs( 5.1 or later) for performance for postgresql? HSIEN-WEN CHU <hsienwen.chu@googlemail.com>
Re: VX_CONCURRENT flag on vxfs( 5.1 or later) for performance for postgresql? Greg Smith <greg@2ndQuadrant.com> 
Dear all

When database files are on a VxFS filesystem, performance can be
significantly improved by setting the VX_CONCURRENT cache advisory on
the file according to vxfs document,

my question is that have any tested by this?


#include 
ioctl(fd, VX_SETCACHE, VX_CONCURRENT);


Regards

HSIEN WEN
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