[CentOS] ext4 in CentOS 5.6?

On 7/5/2011 1:06 PM, Rudi Ahlers wrote:
>
>> /me wonders what an md raid array with an ext3 fs that has its journal
>> on an ssd in full data journal mode give in terms of performance.
>
> I honestly haven't tried this yet, probably cause when I looked at how
> this works, it's only the journal which runs on SSD, so reads won't
> benefit much from it, only reads. But with ZFS you get all the data,
> read&  write, cached on SSD

How much can that matter?  Reads are going to be cached in main RAM 
anyway - which is pretty cheap these days.

-- 
    Les Mikesell
     lesmikesell at gmail.com