Red Hat Linux 7.4
Oracle Database 12.2.0
Hi Team,
I would like to measure the performance of reading and writing test files to measure throughput
https://docs.oracle.com/cd/E11882_01/server.112/e25554/hardware.htm#DWHSG8126
Suppose my ASM disks is listed below
Disk /dev/sdb: 268.4 GB, 268435456000 bytes, 524288000 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk label type: dos
Disk identifier: 0x4e6e1670
Device Boot Start End Blocks Id System
/dev/sdb1 2048 524287999 262142976 83 Linux
Disk /dev/sdc: 268.4 GB, 268435456000 bytes, 524288000 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk label type: dos
Disk identifier: 0x36ac345b
Device Boot Start End Blocks Id System
/dev/sdc1 2048 524287999 262142976 83 Linux
Disk /dev/sdd: 268.4 GB, 268435456000 bytes, 524288000 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk label type: dos
Disk identifier: 0x4042930c
Device Boot Start End Blocks Id System
/dev/sdd1 2048 524287999 262142976 83 Linux
Disk /dev/sde: 268.4 GB, 268435456000 bytes, 524288000 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk label type: dos
Disk identifier: 0xad2667fc
Device Boot Start End Blocks Id System
/dev/sde1 2048 524287999 262142976 83 Linux
I am planning to test the read/write throughput for each disks before deploying in a datawarehouse.
dd if=/dev/sdb of=/tmp/test1.img bs=1G count=1 oflag=dsync
For buffered and cached disk read space
hdparm -t /dev/sdb
Kindly confirm if dd command is OK or is there any other tools
Thanks,
Joe