On Fri, Oct 9, 2009 at 9:25 PM, Derek Anderson <de...@rockymtndata.net> wrote:
>
> GigE wasn't giving me the performance I had hoped for so I spring for some 
> 10Gbe cards.    So what am I doing wrong.
>
> My setup is a Dell 2950 without a raid controller, just a SAS6 card.  The 
> setup is as such
> :
> mirror rpool (boot) SAS 10K
> raidz SSD  467 GB  on 3 Samsung 256 MLC SSD (220MB/s each)
>
> to create the raidz I did a simple zpool create raidz SSD c1xxxxx c1xxxxxx 
> c1xxxxx.  I have a single 10GBe card with a single IP on it.
>
> I created a NFS filesystem for vmware by using :  zfs create SSD/vmware .   I 
> had to set permissoins for Vmware anon=0, but thats it.  Below is what zpool 
> iostat reads:
>
> File copy 10Gbe to SSD -> 40M max
> file copy  1gbe  to SSD ->  5.4M max
> File copy  SAS to SSD internal -> 90M
> File copy SSD to SAS internal -> 55M
>
> Top shows not matter what I always have 2.5 G free and every other test says 
> the same thing.  Can anyone tell me why this is seems to be slow?  Does 90M 
> mean MegaBytes or MegaBits?
>
> Thanks,
>

Derek - I think you made a bad choice with the Samsung disks.  I'd
recommend the Intel 160Gb drives if its not too late to return the
Samsungs.  The Intel drives currently offer the best compromise
between different work loads.  There are plenty of SSD reviews and the
Samsungs always come out poorly in comparison testing.

Regards,

--
Al Hopper  Logical Approach Inc,Plano,TX a...@logical-approach.com
                  Voice: 972.379.2133 Timezone: US CDT
OpenSolaris Governing Board (OGB) Member - Apr 2005 to Mar 2007
http://www.opensolaris.org/os/community/ogb/ogb_2005-2007/
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