Re: Linux I/O tuning: CFQ vs. deadline

On Mon, 8 Feb 2010, Greg Smith wrote:

> Hannu Krosing wrote:
>> Have you kept trace of what filesystems are in use ?
>>
>
> Almost everything I do on Linux has been with ext3.  I had a previous
> diversion into VxFS and an upcoming one into XFS that may shed more light on
> all this.

it would be nice if you could try ext4 when doing your tests.

It's new enough that I won't trust it for production data yet, but a lot
of people are jumping on it as if it was just a minor update to ext3
instead of an almost entirely new filesystem.

David Lang

> And, yes, the whole I/O scheduling approach in Linux was just completely
> redesigned for a very recent kernel update.  So even what we think we know is
> already obsolete in some respects.
>
>