Database Reference
In-Depth Information
Disk Calibration
The ODA comes with a disk calibration utility to check disk performance. Disk calibration is done using Orion (Oracle
I/O numbers), which is an Oracle utility used to mimic Oracle workloads on systems. Orion can also be used to
simulate ASM striping and to provide performance metrics like MBPS, IOPS, and I/O latency.
I/O metrics can change depending on the workload on the system. ODA V1 has 20 SAS disks and 4 SSD disks,
and the results of a performance calibration can be seen. These results will vary depending on the state of the system
and the workload being performed on the system. On a new system with no workload, you should see SAS disks
performing about 4000 read RIOPS. ODA X3-2 currently doesn't support executing disk calibration, and currently the
official numbers are 7000 RIOPS.
Listing 7-11 shows the execution of a disk calibration validation on ODA V1.
Listing 7-11.
Validation of ODA V1 Disk Calibration
[root@oda1 bin]# ./oakcli validate -c DiskCalibration
INFO: Doing oak disk calibration checks
INFO: About to run random read IOPS throughput tests for SASDisk
RESULT: Random read throughput across all 20 SASDisk = 3950 IOPS
INFO: About to run random read IOPS throughput tests for SSDDisk
RESULT: Random read throughput across all 4 SSDDisk = 15661 IOPS
INFO: About to run random read MBPS throughput tests for SASDisk
RESULT: Random read throughput across all 20 SASDisk = 1965 MBPS
INFO: About to run random read MBPS throughput tests for SSDDisk
RESULT: Random read throughput across all 4 SSDDisk = 972 MBPS
INFO: Completed IOPS tests for individual disks of type SASDisk
INFO: Completed MBPS tests for individual disks of type SASDisk
INFO: Completed IOPS tests for individual disks of type SSDDisk
INFO: Completed MBPS tests for individual disks of type SSDDisk
INFO: Completed all single disk tests
INFO: Calibration results for SASDisk
RESULT: Random read throughput of HDD_E1_S10_979877715 is 303 IOPS 160 MBPS
RESULT: Random read throughput of HDD_E1_S06_979677567 is 308 IOPS 167 MBPS
RESULT: Random read throughput of HDD_E0_S05_979864071 is 309 IOPS 164 MBPS
RESULT: Random read throughput of HDD_E1_S14_979871167 is 313 IOPS 165 MBPS
RESULT: Random read throughput of HDD_E1_S15_979869315 is 295 IOPS 163 MBPS
RESULT: Random read throughput of HDD_E1_S11_979853103 is 306 IOPS 166 MBPS
RESULT: Random read throughput of HDD_E0_S08_979867223 is 305 IOPS 164 MBPS
RESULT: Random read throughput of HDD_E1_S18_979672443 is 305 IOPS 163 MBPS
RESULT: Random read throughput of HDD_E0_S16_979672427 is 304 IOPS 164 MBPS
RESULT: Random read throughput of HDD_E0_S04_979846015 is 298 IOPS 160 MBPS
RESULT: Random read throughput of HDD_E1_S02_979865471 is 301 IOPS 158 MBPS
RESULT: Random read throughput of HDD_E0_S01_979676399 is 294 IOPS 158 MBPS
RESULT: Random read throughput of HDD_E0_S00_979802375 is 303 IOPS 160 MBPS
RESULT: Random read throughput of HDD_E1_S03_979773239 is 304 IOPS 160 MBPS
RESULT: Random read throughput of HDD_E0_S13_979854143 is 301 IOPS 168 MBPS
RESULT: Random read throughput of HDD_E1_S19_979877275 is 312 IOPS 167 MBPS
RESULT: Random read throughput of HDD_E1_S07_979781771 is 311 IOPS 168 MBPS
RESULT: Random read throughput of HDD_E0_S12_979804175 is 310 IOPS 163 MBPS
RESULT: Random read throughput of HDD_E0_S17_979865419 is 306 IOPS 163 MBPS
RESULT: Random read throughput of HDD_E0_S09_979670555 is 311 IOPS 164 MBPS
INFO: Calibration results for SSDDisk
RESULT: Random read throughput of SSD_E1_S23_805674868 is 4138 IOPS 328 MBPS
