Kelsey Bjarnason wrote:
> [snips]
>
> On Thu, 12 Mar 2009 12:40:02 +0100, Peter Köhlmann wrote:
>> The *apps* are at fault.
>
> I'd heard about this, but hadn't read anything about it - until now.
>
> Indeed, it comes down to app developers relying on ext3's default of "5
> seconds to flush" rather than explicitly flushing at sensible intervals.
>
> As Ts'o points out, any file system makes a tradeoff between performance
> and reliability; more advanced file systems such as Ext4 attempt to
> maximize performance while letting the app "look after itself" - flush
> when necessary to ensure the data is safe - because, after all, it is the
> the app rather than the file system, knows best when it's time to do a
> sync.
>
> There is a sort of amusing side to this, though: app developers in Linux
> are apparently so used to systems which just *do not crash* that they
> don't sync their data - no need, if the system isn't going down any time
> in the foreseeable future. :)
An excellent point Kelsey.
--
If we wish to reduce our ignorance, there are people we will
indeed listen to. Trolls are not among those people, as trolls, more or
less by definition, *promote* ignorance.
Kelsey Bjarnason, C.O.L.A. 2008
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