Language Selection

English French German Italian Portuguese Spanish

zfs vs xfs vs ext4

Filed under
OS

This is my attempt to cut through the hype and uncertainty to find a storage subsystem that works. I compared XFS and EXT4 under Linux with ZFS under OpenSolaris. The machine is a 2200MHz Athlon 64 with 1GB of memory and 8 400GB disks attached to an Areca ARC-1220 SATA controller. Linux is 2.6.22.5 and OpenSolaris is 5.11 snv_70 "Nevada".

Aside from the different kernels and filesystems, I tested internal and external journal devices and software and hardware RAIDs. Software RAIDs are "raid-10 near2" with 6 disks on Linux. On Solaris the zpool is created with three mirrors of two disks each. Hardware RAIDs use the Areca's RAID-10 for both Linux and Solaris. Drive caches are disabled throughout, but the battery-backed cache on the controller is enabled when using hardware RAID. If an external journal is used, it is on a single disk with write caching disabled. The system is installed on the remaining disk, which is not involved in the testing.

XFS and ZFS filesystems were created with default parameters. EXT4 filesystems are created with -b 4096, to force 4096 block size when using the external journal. All filesystems were mounted with atime disabled. EXT4 is mounted with extents.

More Here




More in Tux Machines

MBARI testing the waters with open source camera

“There is a movement to have open source oceanographic equipment,” said Chad Kecy, lead designer and MBARI engineer. “Anyone could take our designs and modify them for specific needs they have. It’s just a less expensive and easier way of getting cameras in the water.” Read more

Fixing unperceived errors in my X Windows configuration

Last week I decided to bite the bullet and upgrade X Windows to the latest version available in the main Portage tree. After rebooting, X Windows, GLX and Direct Rendering worked fine as usual. So everything was good. Well, not quite. Although the installation was working properly, there were still some long-standing messages in the X.Org log file that indicated my installation was not configured completely correctly. I had ignored them for too long and resolved to find their causes and eliminate them. Here is what I did.

Read more

Leftovers: Software

  • Ekiga 5 – Progress Report
    Ekiga 5 has progressed a lot lately. OpenHUB is reportin a High Activity for the project. The main reason behind this is that I am again dedicating much of my spare time to the project. Unfortunately, we are again facing a lack of contributions. Most probably (among others) because the project has been silent during several years.
  • Calibre Gets a New Tool to Better Edit eBooks
    The Calibre eBook reader, editor, and library management software has been upgraded to version 2.17 and is now available for download. The developer has only implemented a couple of new features, but it's really worth the update if you are using this application to edit eBooks.
  • More Windows Apps and Games Now Work with Wine 1.7.35, EA's Origin Included
    Wine 1.7.35 has been released and the developers have made a number of improvements for some of the core components and they've added support for more apps and games.

today's howtos