Matthias Andree wrote:
>
> jcarminatipluspetrol.com.ar writes:
>
> > I was surprised yesterday while configuring Postfix at home (two nodes). After
> > issuing that command I saw increased around 8 to 9 times the transfer rate
> > between both MTAs, while the disk usage was drastically reduced, amazing. Maybe
> > this tip can be included to the FAQ.
>
> Don't to that when either of this is true for your system:
>
> - drives that have their write cache enabled (IDE drives usually do, use
> hdparm -W0 /dev/hda to turn it off)

IMHO in this case it makes no difference if you have chattr +S or not as
the drive may eat your mails regardless of -osync, fsync() or
whatever...

Actually, if you rely on your data in general one should turn off the
disk write cache - OTOH I doubt that many people have to worry about
this. Instead they should use a UPS!

Juri

-- 
  If each of us have one object, and we exchange them,
     then each of us still has one object.
  If each of us have one idea,   and we exchange them,
     then each of us now has two ideas.
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