Linux Disk Speed Test

Hi,

Disk speed is very important for database administrator and application. Because disk speed is very slow then you will see slowness automatically.

 

If you want to see disk speed and compare with another disk you can do disk speed test.

You can do disk speed test basically with following.

[root@MehmetSalih ]# dd if=/dev/zero of=deveci.zeroes bs=8M count=125

 

If you want to do disk test in detail you can use following script.

#!/bin/sh 
READBS=8M 
BS=8M 
COUNT=125 
REPOSITORIES="/backup" 
for REPOSITORY in ${REPOSITORIES} ; do 
BASECOMMAND="time dd if=/dev/zero of=${REPOSITORY}/THIS_IS_A_DD_TEST bs=${BS} count=${COUNT}" 
for COMMAND in "${BASECOMMAND}" "${BASECOMMAND} conv=fdatasync" "${BASECOMMAND} oflag=direct" ; do 
echo ${COMMAND} 
$COMMAND 
echo "" 
echo "---------------------------------" 
echo "" 
done 
echo "dd if=${REPOSITORY}/THIS_IS_A_DD_TEST of=/dev/null bs=${READBS}" 
dd if=${REPOSITORY}/THIS_IS_A_DD_TEST of=/dev/null bs=${READBS} 
rm -f ${REPOSITORY}/THIS_IS_A_DD_TEST 
echo "" 
echo "---------------------------------" 
echo "" 
done

 

Mehmet Salih Deveci

I am Founder of IT Tutorial and Certified Expert about Oracle & SQL Server database, Goldengate, Exadata Machine, Oracle Database Appliance administrator with 10+years experience.I have OCA, OCP, OCE RAC Expert Certificates I have worked 100+ Banking, Insurance, Finance, Telco and etc. clients as a Consultant, Insource or Outsource.I have done 200+ Operations in this clients such as Exadata Installation & PoC & Migration & Upgrade, Oracle & SQL Server Database Upgrade, Oracle RAC Installation, SQL Server AlwaysOn Installation, Database Migration, Disaster Recovery, Backup Restore, Performance Tuning, Periodic Healthchecks.I have done 2000+ Table replication with Goldengate or SQL Server Replication tool for DWH Databases in many clients.If you need Oracle DBA, SQL Server DBA, APPS DBA,  Exadata, Goldengate, EBS Consultancy and Training you can send my email adress mehmetsalih.deveci@outlook.com.-                                                                                                                                                                                                                                                 -Oracle DBA, SQL Server DBA, APPS DBA,  Exadata, Goldengate, EBS ve linux Danışmanlık ve Eğitim için  mehmetsalih.deveci@outlook.com a mail atabilirsiniz.

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