Re: Oracle on Sun T2 performance problems

From: Bradd Piontek <>
Date: Tue, 23 Sep 2008 15:23:34 -0500
Message-ID: <>

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: Linked In:

On Tue, Sep 23, 2008 at 3:18 PM, Scott Canaan <> 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 (
> (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:* [mailto:
>] *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.

Received on Tue Sep 23 2008 - 15:23:34 CDT

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