On 01.10.14 15:42, David Sterba wrote:

On Sat, Sep 13, 2014 at 11:29:22PM +0200, Alexander Graf wrote:

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I've just found this:

https://news.opensuse.org/2014/03/19/development-for-13-2-kicks-off/

"""The btrfs filesystem is default (and comes with btrfsprogs 3.12), as is the wicked network management tool (replacing ifup) and the dracut initrd replacement"""

But our JeOS images still not use btrfs. Should they? At least for 13.3 release.

I've benchmarked compressed btrfs vs ext4 a while back on SD cards and for some reason ext4 performed better :(.

What kind of benchmark was it? Compression introduces latency and consumes CPU power, so for a flash device with no seek penalty it could be noticeable.

IIRC I simply measured bootup time :). Please benchmark a bit for yourself - the JeOS template has a simple define that allows you to enable btrfs with compression again. But also keep in mind that btrfs isn't exactly tuned for SD cards, but rather real flash storage, which has different access pattern optimizations. Alex -- To unsubscribe, e-mail: opensuse-arm+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse-arm+owner@opensuse.org