Re: Purging the Page Table (was: Purging the Buffer Cache)

From: Jamie Lokier (lk@tantalophile.demon.co.uk)
Date: Thu Dec 28 2000 - 00:50:20 EST


Al Peat wrote:
> > > Is there any way to completely purge the buffer
> > > cache -- not just the write requests (ala 'sync'
> > or
> > > 'update'), but the whole thing? Can I just call
> > > invalidate_buffers() or destroy_buffers()?

Try this script:

case "`id -u`" in
  0) ;;
  *) echo Only root can run this script. 1>&2; exit 1 ;;
esac

mount | sort -k3 -r | \
while read dev ON dir TYPE type etc; do
  echo mount $dir -o remount
  mount $dir -o remount
done

mount | sort -k1 | \
while read dev ON dir TYPE type etc; do
  case "$dev" in
    /dev/*) echo hdparm -f $dev
      hdparm -f $dev >/dev/null ;;
  esac
done

-- Jamie
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