It is a lightly loaded XIV, and the disk system does not seem under
pressure, unless I force it with dd or something in testing, but I
will check it out.
Any other ideas out there?
On Fri, Oct 8, 2010 at 11:37 AM, Paul Zarnowski <psz1 AT cornell DOT edu> wrote:
> I would be suspicious of having the db on XIV. Do you have any FC or SAS Disk
> you could try putting the DB on? I know XIV has lots of CPU & cache, but
> underneath it all is still SATA. I've heard Marketing types rave about how
> fast XIV is, even with SATA, because I/O can be spread across many spindles,
> but I'm not entirely convinced it's as good as 15k FC or SAS.
>
> ..Paul
>
>
> On Oct 8, 2010, at 12:27 PM, "Andrew Carlson" <naclosagc AT GMAIL DOT COM>
> wrote:
>
>> Hi all
>>
>> I am running TSM 6.2.1.1 on AIX V615 in a LPAR on a P770. The LPAR
>> has 6 shared CPU's, 12 virtual CPU;s, and 64GB of memory. There are 2
>> VIO servers with 4 fiber channel connections to XIV storage for the DB
>> and LOG, and 2 10Gbit Ethernet in each VIO in an Etherchannel
>> configuration. The storage pool is on Data Domain DD880's, 2 per AIX,
>> 1 per instance.
>>
>> I am seeing consistenly poor performance from this setup. I have
>> tested network from VIO to cloud, and LPAR to VIO, which seems fine.
>> I tested LPAR to Data Domain, and things seem fine. But, when backups
>> are running (and I only have a few nodes there yet, this is a new
>> setup), TSM doesn't seem to want to go over 20 to 30MB/s throughput.
>> I tried backing up the TSM server over lo, and that was a little
>> better at 50MB/s, but not screaming. I tried using chunk of SAN as a
>> disk pool ahead of the Data Domain, no change. I am at my whit's end.
>>
>> If anyone has any ideas, please let me know. Thanks.
>>
>> --
>> Andy Carlson
>> ---------------------------------------------------------------------------
>> Gamecube:$150,PSO:$50,Broadband Adapter: $35, Hunters License: $8.95/month,
>> The feeling of seeing the red box with the item you want in it:Priceless.
>
--
Andy Carlson
---------------------------------------------------------------------------
Gamecube:$150,PSO:$50,Broadband Adapter: $35, Hunters License: $8.95/month,
The feeling of seeing the red box with the item you want in it:Priceless.
|
