How to Run FIOs Disk Performance Test

[#1]

Version

Cb Response 4.2.1, 5.x

Topic

How to run FIOs (Flexible Input/Output benchmarking tool) to test disk performance

Steps

Follow these steps on the requested nodes or run the attached script:

1. Install FIOs:

   yum install fio -y

   Note: If CbISO is used FIOs is included in the install

2. Determine the Datastore Root Directory in your environment:

   grep DatastoreRootDir /etc/cb/cb.conf  | awk -F'=' '{print $2}'

   Note: The Default Directory is /var/cb/data

3. Edit FIO config file

   1. Open FIO config file:

      vi /usr/share/cb/diag/basic_rw_randseq_tests.fio

   2. Modify to use the directory you would like to test:

      [global]
      directory= DatastoreRootDir

      Note: Replace DatastoreRootDir with location found in step 2

      Example:
      

      [global]
      directory=/var/cb/data

4. Verify there is enough disk space available (At Least 16GB) in the specified directory to perform test:

   df -h DatastoreRootDir

   Warning: At least 16 GB of disk space must be free to run the test

5. Stop Services
   

   Warning: If services are not stopped when running the test, the results will not be accurate since Cb Response will also be using the disk

   1. Standalone:
      

      service cb-enterprise stop

   2. Cluster (Run on Master Only):
      

      /usr/share/cb/cbcluster stop

6. Run FIOs:
   

   fio /usr/share/cb/diag/basic_rw_randseq_tests.fio --output fio_results_<NodeID>_<Date>.txt

   Warning: If you abort the run using Ctrl-C or FIO fails during the run you will need to ensure you remove all FIOs files from DatastoreRootDir:
   random-reads.1.0
   sequential-reads.2.0
   random-writes.3.0
   sequential-writes.4.0

7. Remove FIO’s read and write files:

   rm -f DatastoreRootDir/random-*
   rm -f DatastoreRootDir/sequential-*

   Note: Replace DatastoreRootDir with with location found in step 2

8. Start services

   1. Standalone:

      service cb-enterprise start

   2. Cluster (Run on Master Only):

      /usr/share/cb/cbcluster start

9. Upload fio_results.txt to Alliance:

   /usr/share/cb/cbpost fio_results_<NodeID>_<Date>.txt