以下同时使用cellcli calibrate和 DBMS_RESOURCE_MANAGER.CALIBRATE_IO包测试 Exadata IO， Exadata为X2-2 1/4 RAC:  

CellCLI: Release 11.2.3.1.1 - Production on Mon Dec 03 00:32:27 EST 2012

Copyright (c) 2007, 2011, Oracle. All rights reserved.

Cell Efficiency Ratio: 617

CellCLI> calibrate force;

Calibration will take a few minutes...

Aggregate random read throughput across all hard disk LUNs: 1921 MBPS

Aggregate random read throughput across all flash disk LUNs: 4164.33 MBPS

Aggregate random read IOs per second (IOPS) across all hard disk LUNs: 4971

Aggregate random read IOs per second (IOPS) across all flash disk LUNs: 145195

Controller read throughput: 1919.64 MBPS

Calibrating hard disks (read only) ...

LUN 0_0 on drive [28:0 ] random read throughput: 168.12 MBPS, and 430 IOPS

LUN 0_1 on drive [28:1 ] random read throughput: 164.23 MBPS, and 423 IOPS

LUN 0_10 on drive [28:10 ] random read throughput: 170.80 MBPS, and 433 IOPS

LUN 0_11 on drive [28:11 ] random read throughput: 168.32 MBPS, and 421 IOPS

LUN 0_2 on drive [28:2 ] random read throughput: 170.07 MBPS, and 431 IOPS

LUN 0_3 on drive [28:3 ] random read throughput: 169.82 MBPS, and 421 IOPS

LUN 0_4 on drive [28:4 ] random read throughput: 165.17 MBPS, and 417 IOPS

LUN 0_5 on drive [28:5 ] random read throughput: 166.82 MBPS, and 429 IOPS

LUN 0_6 on drive [28:6 ] random read throughput: 170.85 MBPS, and 430 IOPS

LUN 0_7 on drive [28:7 ] random read throughput: 168.42 MBPS, and 429 IOPS

LUN 0_8 on drive [28:8 ] random read throughput: 169.78 MBPS, and 428 IOPS

LUN 0_9 on drive [28:9 ] random read throughput: 168.77 MBPS, and 430 IOPS

Calibrating flash disks (read only, note that writes will be significantly slower) ...

LUN 1_0 on drive [FLASH_1_0] random read throughput: 271.01 MBPS, and 19808 IOPS

LUN 1_1 on drive [FLASH_1_1] random read throughput: 270.24 MBPS, and 19821 IOPS

LUN 1_2 on drive [FLASH_1_2] random read throughput: 270.41 MBPS, and 19844 IOPS

LUN 1_3 on drive [FLASH_1_3] random read throughput: 270.37 MBPS, and 19812 IOPS

LUN 2_0 on drive [FLASH_2_0] random read throughput: 272.32 MBPS, and 20634 IOPS

LUN 2_1 on drive [FLASH_2_1] random read throughput: 272.12 MBPS, and 20635 IOPS

LUN 2_2 on drive [FLASH_2_2] random read throughput: 272.28 MBPS, and 20676 IOPS

LUN 2_3 on drive [FLASH_2_3] random read throughput: 272.43 MBPS, and 20669 IOPS

LUN 4_0 on drive [FLASH_4_0] random read throughput: 271.13 MBPS, and 19802 IOPS

LUN 4_1 on drive [FLASH_4_1] random read throughput: 271.90 MBPS, and 19799 IOPS

LUN 4_2 on drive [FLASH_4_2] random read throughput: 271.42 MBPS, and 19798 IOPS

LUN 4_3 on drive [FLASH_4_3] random read throughput: 272.25 MBPS, and 19808 IOPS

LUN 5_0 on drive [FLASH_5_0] random read throughput: 272.22 MBPS, and 19824 IOPS

LUN 5_1 on drive [FLASH_5_1] random read throughput: 272.44 MBPS, and 19823 IOPS

LUN 5_2 on drive [FLASH_5_2] random read throughput: 271.83 MBPS, and 19808 IOPS

LUN 5_3 on drive [FLASH_5_3] random read throughput: 271.73 MBPS, and 19837 IOPS

CALIBRATE results are within an acceptable range.

Calibration has finished.

 

set serveroutput on;

DECLARE

lat INTEGER;

iops INTEGER;

mbps INTEGER;

BEGIN

-- DBMS_RESOURCE_MANAGER.CALIBRATE_IO (disk_count,max_latency , iops, mbps, lat);

DBMS_RESOURCE_MANAGER.CALIBRATE_IO (20, 15, iops, mbps, lat);

DBMS_OUTPUT.PUT_LINE ('max_iops = ' || iops);

DBMS_OUTPUT.PUT_LINE ('latency = ' || lat);

dbms_output.put_line('max_mbps = ' || mbps);

end;

/

max_iops = 27176

latency = 4

max_mbps = 4280

PL/SQL procedure successfully completed.

 

 

SQL> col start_time for a10;

SQL> col end_time for a10;

SQL> select * from DBA_RSRC_IO_CALIBRATE;

START_TIME END_TIME MAX_IOPS MAX_MBPS MAX_PMBPS LATENCY NUM_PHYSICAL_DISKS

---------- ---------- ---------- ---------- ---------- ---------- ------------------

00:42 00:58 27176 4280 511 4 20