Re: interconnect stress test

What do you mean by 'stress out' the
interconnect ? Do you want the RAC
instances to suffer from performance
problems, or do you want the interconnect to have more traffic than it can handle ?

I managed to cause massive performance problems with RAC using the hp/compaq/whatever high speed interconnect (Memory Channel Architecture ?) with just one session per CPU running a pl/sql loop.

I don't know if the actual interconnect was overloaded - but the sessions were losing time on nothing but global lock management.

--
Regards

Jonathan Lewis
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"gdb_dsr" <ge_2000_2001_at_yahoo.com> wrote in message
news:6299d152.0310171111.e5669de_at_posting.google.com...


> Hi,

>

> I need to staturate 2 node RAC-9201/Linux interconnect, obviously it

needs


> lot of load. I used about 10 sessions one user each on each node

with oci


> programs and change 15k rows continuously. I dont see much traffic

> (CPUs (4 xenon), scsi disk io are far below to their capacity).

> I dont see any bottelneck.

> (I tried sql scripts to update and retrive but they are too slow)

> I can go for more sessions but for some of the sessions oracle is

not


> responsive for a while. In other words some times they are fast some

times


> too slow.

>

> Does any one knows any better options or environment setup in the

oracle


> to exploit to saturate interconnect (ethernet) card.

>

> Thank you.