AW: Allowing WAL fsync to be done via O_SYNC

From: Zeugswetter Andreas SB <ZeugswetterA(at)wien(dot)spardat(dot)at>
To: "'Tom Lane'" <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: pgsql-hackers(at)postgresql(dot)org
Subject: AW: Allowing WAL fsync to be done via O_SYNC
Date: 2001-03-16 15:02:38
Message-ID: 11C1E6749A55D411A9670001FA687963368250@sdexcsrv1.f000.d0188.sd.spardat.at
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> Okay ... we can fall back to O_FSYNC if we don't see either of the
> others. No problem. Any other weird cases out there? I think Andreas
> might've muttered something about AIX but I'm not sure now.

You can safely use O_DSYNC on AIX, the only special on AIX is,
that it does not make a speed difference to O_SYNC. This is imho
because the jfs only needs one sync write to the jfs journal for meta info
in eighter case (so that nobody misunderstands: both perform excellent).

Andreas

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