Re: Ext3 vs NTFS performance

[Albert Cahalan]

Andrew Morton writes:
> "Cabot, Mason B" <mason.b.cabot@xxxxxxxxx> wrote:

> > I've been testing the NAS performance of ext3/Openfiler 2.2 against
> > NTFS/WinXP and have found that NTFS significantly outperforms ext3 for
> > video workloads. The Windows CIFS client will attempt a poor-man's
> > pre-allocation of the file on the server by sending 1-byte writes at
> > 128K-byte strides, breaking block allocation on ext3 and leading to
> > fragmentation and poor performance. This will happen for many
> > applications (including iTunes) as the CIFS client issues these
> > pre-allocates under the application layer.
>
> Oh my gawd, what a stupid hack.  Now we know what the
> MS interoperability lab has been working on.

Stupid or not, this is their protocol. The cifs filesystem
driver needs a patch to do this. Probably that'll help get
better performance when Linux is writing to a Windows server.
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/