cost of tdb transactions on ext4 with barriers

ronnie sahlberg ronniesahlberg at
Thu Feb 11 19:37:16 MST 2010

Do you really need barriers on ext4?

On Fri, Feb 12, 2010 at 1:06 PM,  <tridge at> wrote:
> Hi Scott,
>  > I'm assuming you've got a 5400 RPM drive on your laptop.  Any chance
>  > these would be much better using a SSD?
> It's a 7200 (a seagate momentus 500G 7200.4), but that doesn't matter
> much for this test. I was using a 2G test partition, so it wasn't the
> disk size.
> On a SSD it will be better of course, as barriers are much cheaper,
> but it probably will wear out the SSD much faster then it needs to.
> Cheers, Tridge

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