RE: Oracle on Sun T2 performance problems
- From: "Crisler, Jon" <Jon.Crisler@xxxxxxx>
- To: "Bradd Piontek" <piontekdd@xxxxxxxxx>, <srcdco@xxxxxxx>
- Date: Tue, 23 Sep 2008 17:02:44 -0400
In looking at prtdiag, it comes out as a T5220 with 64 processors, but I
believe its really one or two 8-core CPU's. You mention an interesting
thing- we are using RMAN compression.
________________________________
From: Bradd Piontek [mailto:piontekdd@xxxxxxxxx]
Sent: Tuesday, September 23, 2008 4:24 PM
To: srcdco@xxxxxxx
Cc: Crisler, Jon; oracle-l
Subject: Re: Oracle on Sun T2 performance problems
You may want to make a distinction between a T2000 (which has a T1 chip
in it, only on FPU for all the cores) and the T2 chip that ships in the
T42XX series of servers (that have a dedicated FPU per core, I believe).
For RMAN, with a T1 chipset, we saw dismal performance with rman
compression (due to the floating point issue). I expect this to be much
different on the T2 chips. Oracle licensing between the two is different
as well (.25;/core for T1 and .75/core for the T2).
Bradd Piontek
Oracle Blog: http://piontekdd.blogspot.com
Linked In: http://www.linkedin.com/in/piontekdd
On Tue, Sep 23, 2008 at 3:18 PM, Scott Canaan <srcdco@xxxxxxx> wrote:
We've added some Sun T2000 series servers to our data center and they
are much slower all the way around. We've done benchmark tests on them
to prove it. Basically, you get what you pay for. They are cheaper
than other Sun servers. According to one of our SAs, the reason that
they are so much slower is that they don't do hardware floating point
calculations, it's all software. I've even noticed a 3x to 4x slower
transfer rate between servers when using scp if even one of the two
servers is a T2000 series. We try to put test databases on them and
leave production on the other servers.
Scott Canaan '88 (Scott.Canaan@xxxxxxx)
(585) 475-7886
"Life is like a sewer, what you get out of it depends on what you put
into it." - Tom Lehrer.
-----Original Message-----
From: oracle-l-bounce@xxxxxxxxxxxxx
[mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of Crisler, Jon
Sent: Tuesday, September 23, 2008 4:06 PM
To: oracle-l
Subject: Oracle on Sun T2 performance problems
We are having performance problems with Sun T2 platform, especially with
RMAN backups. The database consists of about 75% blobs.
Has anybody run into major performance problems with RMAN either on a
Sun T2 or on a 10g db with lots of blobs ? Our disk I/O has far more
i/o capacity than is being used.
Other related posts:
