[CentOS] new ssd to play with

[Connie Sieh]

On Wed, 7 Sep 2011, Jerry Geis wrote:

>  I grabbed a new SSD  M4-CT064M4SSD2 from Crucial.
>
> I am disappointed.  I stuck the unit in an Atom machine (zotac) with
> CentOS 6 on the disk.
> It really doesn't "feel" faster than the previous 5400 RPM drive that
> was in it.
>
> The SSD is giving me (in the zotac running centos 6):
> hdparm -t /dev/sda
> /dev/sda:
>  Timing buffered disk reads:  298 MB in  3.00 seconds =  99.30 MB/sec
>
> The Samsung 5400 RPM disk (in the zotac running Centos 6):
>  hdparm -t /dev/sda
> /dev/sda:
>  Timing buffered disk reads:  196 MB in  3.01 seconds =  65.02 MB/sec
>
> I'm not supper impressed at all. Sure the numbers say its "slightly"
> better but I don't "feel" it.
> I was expecting like really noticeable change in application load time or
> something - but not really.
>
> Just wondering...  Is there something that has to be done to take
> advantage of the SSD performance?

You need to verify that  "AHCI" is enabled for the sata interface.

-Connie Sieh

>
> Thanks,
>
> jerry
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