Expert Oracle Exadata - Parent Directory

CHAPTER 6 MAKING PCBS-- switch to one of the cells[enkcel01:root] /root > vmstat 2procs -----------memory---------- ---swap-- -----io---- --system-- -----cpu------r b swpd free buff cache si so bi bo in cs us sy id wa st0 1 0 9147200 311736 1353092 0 0 390 298 1 1 1 1 98 0 00 1 0 9147504 311736 1353092 0 0 2010 233 1732 21385 0 0 94 6 01 1 0 9147504 311736 1353092 0 0 1810 241 1675 21294 0 1 94 5 00 1 0 9148000 311736 1353136 0 0 1917 157 1715 21715 0 0 94 5 00 1 0 9147876 311736 1353140 0 0 2018 357 1770 20928 0 0 94 5 00 1 0 9145776 311736 1353140 0 0 1906 298 1713 20086 0 0 94 5 0-- switch back to original session)max_iops = 1004latency = 10max_mbps = 2201PL/SQL procedure successfully completed.Elapsed: 00:13:41.27SYS@EXDB1> set timing offSYS@EXDB1> @mystats)Enter value for name: cell flash cacheNAMEVALUE------------------------------------------------------------ ---------------cell flash cache read hits 0SYS@EXDB1> select * from V$IO_CALIBRATION_STATUS;STATUS CALIBRATION_TIME------------- --------------------------------------------------------------READY 10-DEC-10 09.20.11.254 PMSYS@EXDB1> select to_char(start_time,'dd-mon-yy') start_time ,2 MAX_IOPS, MAX_MBPS, MAX_PMBPS, LATENCY, NUM_PHYSICAL_DISKS3 from DBA_RSRC_IO_CALIBRATE;START_TIM MAX_IOPS MAX_MBPS MAX_PMBPS LATENCY NUM_PHYSICAL_DISKS--------- ---------- ---------- ---------- ---------- ------------------11-dec-10 1004 2201 101 10 36This listing is a little long, so let‘s walk through what we did:1. We checked the current status in V$IO_CALIBRATION_STATUS.2. We ran the DBMS_RESOURCE_MANAGER.CALIBRATE_IO procedure using a scriptcalled calibrate_io.sql.151