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