Re: Sun T2000

Kevin,

thanks for the question. There were no PIO involved.

Here is what I see:

create table t as
        select mod(level, 10) m10,
                        mod(level, 25) m25,
                        mod(level, 50) m50,
                        level l
                from dual
                connect by level <= 500000;

Proliant results:

select m10, m25, m50, sum(l), count(*), min(l), max(l), avg(l)
from t
group by m10, m25, m50

call     count       cpu    elapsed       disk      query    current        rows
------- ------  -------- ---------- ---------- ---------- ----------  ----------
Parse        1      0.00       0.00          0          1          0           0
Execute      1      0.00       0.00          0          0          0           0
Fetch        5      0.69       0.67          0        649          0          50
------- ------  -------- ---------- ---------- ---------- ----------  ----------
total        7      0.69       0.67          0        650          0          50

T2000 results:

select m10, m25, m50, sum(l), count(*), min(l), max(l), avg(l)
from t
group by m10, m25, m50

call     count       cpu    elapsed       disk      query    current        rows
------- ------  -------- ---------- ---------- ---------- ----------  ----------
Parse        1      0.00       0.00          0          0          0           0
Execute      1      0.00       0.00          0          0          0           0
Fetch        2      4.45       4.34          0        649          0          50
------- ------  -------- ---------- ---------- ---------- ----------  ----------
total        4      4.45       4.34          0        649          0          50

Both DB were created with a 16K blocksize. And mind that - Proliant
were running with use_indirect_data_buffers=true.

On 3/25/07, Kevin Closson <kevinc@xxxxxxxxxxxxx> wrote:

of the T2000 server
vs Proliant DL380 G3 (based on 3Ghz Xeons).

One Niagara core were approximately 7 to 8 times slower than single
Xeon CPU in batch task (huge sorts/aggregates) -

...I'm not syaing you didn't see this result, but that seem slower than
expected. To what degree was I/O a factor?









--
Alexander Fatkulin
--
http://www.freelists.org/webpage/oracle-l

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