Difference between revisions of "Performance"

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[[File:ZFS_iozone_time.png|left|frame|Comparision of ZFS implementations]]
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[[File:ZFS_iozone_time.png|left|frame|Comparison of ZFS implementations]]

Revision as of 02:58, 11 April 2014

Status

Currently OpenZFS on OSX is under heavy development, with priority being given to completion of features over performance.

Current Benchmarks

In order to establish a baseline of current performance of OpenZFS on OSX, measurements have been made using the iozone [1] benchmarking tool. The benchmark consists of running various ZFS implementations inside a VMware 6.0.2 VM on a 2011 iMac. Each VM is provisioned with 8GB of RAM, an OS boot drive, and a 5 GB second HDD containing a ZFS dataset. The HDDs are standard VMware .vmx files.

The test zpool was created using the following command:

zpool create -o ashift=12 -f tank <disk device name>

The benchmark consists of the following steps:

  1. Start the VM.
  2. Import the tank dataset
  3. Execute -> mkdir /tank/tmp && cd /tank/tmp
  4. Execute -> time iozone -a
  5. Record Time 1
  6. Execute -> time iozone -a
  7. Record time 2
  8. Terminate the VM and VMware before moving to the next ZFS implementation/OS combination.


The results are as follows:


Comparison of ZFS implementations