Re: Perfomance Tuning

scott.marlowe wrote:
> On Fri, 8 Aug 2003, Andrew Sullivan wrote:
>
> > On Fri, Aug 08, 2003 at 09:40:20AM -0700, Jonathan Gardner wrote:
> > >
> > > Redhat puts ext3 on by default. Consider switching to a non-journaling FS
> > > (ext2?) with the partition that holds your data and WAL.
> >
> > I would give you exactly the opposite advice: _never_ use a
> > non-journalling fs for your data and WAL. I suppose if you can
> > afford to lose some transactions, you can do without journalling.
> > Otherwise, you're just borrowing trouble, near as I can tell.
>
> I'd argue that a reliable filesystem (ext2) is still better than a
> questionable journaling filesystem (ext3 on kernels <2.4.20).
>
> This isn't saying to not use jounraling, but I would definitely test it
> under load first to make sure it's not gonna lose data or get corrupted.

That _would_ work if ext2 was a reliable file system --- it is not.

This is the problem of Linux file systems --- they have unreliable, and
journalled, with nothing in between, except using a journalling file
system and having it only journal metadata.

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