[lkml]   [2012]   [Feb]   [29]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
    SubjectRe: getdents - ext4 vs btrfs performance
    On Wed, Feb 29, 2012 at 03:07:45PM +0100, Jacek Luczak wrote:

    [ btrfs faster than ext for find and cp -a ]

    > 2012/2/29 Jacek Luczak <>:
    > I will try to answer the question from the broken email I've sent.
    > @Lukas, it was always a fresh FS on top of LVM logical volume. I've
    > been cleaning cache/remounting to sync all data before (re)doing
    > tests.

    The next step is to get cp -a out of the picture, in this case you're
    benchmarking both the read speed and the write speed (what are you
    copying to btw?).

    Using tar cf /dev/zero <some_dir> is one way to get a consistent picture
    of the read speed.

    You can confirm the theory that it is directory order causing problems
    by using acp to read the data.


     \ /
      Last update: 2012-02-29 15:47    [W:0.020 / U:145.764 seconds]
    ©2003-2017 Jasper Spaans. hosted at Digital OceanAdvertise on this site