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Re: Changing the default wal_sync_method to open_sync for

From: Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: Magnus Hagander <mha(at)sollentuna(dot)net>,pgsql-hackers(at)postgresql(dot)org, pgsql-hackers-win32(at)postgresql(dot)org,Merlin Moncure <merlin(dot)moncure(at)rcsonline(dot)com>
Subject: Re: Changing the default wal_sync_method to open_sync for
Date: 2005-03-17 04:31:59
Message-ID: 200503170431.j2H4VxZ22924@candle.pha.pa.us (view raw or flat)
Thread:
Lists: pgsql-hackerspgsql-hackers-win32
Tom Lane wrote:
> Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> writes:
> > Notice we never default to open_sync.  However, on Win32, Magnus got a
> > 60% speedup by using open_sync, implemented using
> > FILE_FLAG_WRITE_THROUGH.  Now, because this the fastest on Win32, I
> > think we should default to open_sync on Win32.  The attached patch
> > implements this.
> 
> ... and breaks open_datasync for all other platforms ...

Oh, fixed.

-- 
  Bruce Momjian                        |  http://candle.pha.pa.us
  pgman(at)candle(dot)pha(dot)pa(dot)us               |  (610) 359-1001
  +  If your life is a hard drive,     |  13 Roberts Road
  +  Christ can be your backup.        |  Newtown Square, Pennsylvania 19073

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