lkml.org 
[lkml]   [2004]   [Aug]   [27]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    From
    SubjectRe: A few filesystem benchmarks w/ReiserFS4 vs Other Filesystems
    Date

    Hi,

    On Friday 27 August 2004 16:39, Justin Piszcz wrote:
    > Are balanced b-trees better for removing many files over dancing onces?
    > See rm -rf benchmark.
    >
    > # -------------------------------------------------------------------- #
    > Filesystems to test:
    > # -------------------------------------------------------------------- #
    > Each file system was created with fdisk to be +1024MB.
    > # -------------------------------------------------------------------- #
    > With default initilization commands: mkfs.fs /dev/hdb[1-7]
    > # -------------------------------------------------------------------- #
    > Filesystem Size Used Avail Use% Mounted on
    > /dev/hdb1 962M 20K 913M 1% /fs/ext2
    > /dev/hdb2 962M 17M 897M 2% /fs/ext3
    > /dev/hdb3 977M 33M 945M 4% /fs/reiser3
    > /dev/hdb5 929M 144K 929M 1% /fs/reiser4
    > /dev/hdb6 973M 256K 973M 1% /fs/jfs
    > /dev/hdb7 973M 144K 972M 1% /fs/xfs

    Sorry to say this but your testing procedure is flakey because outer disk
    tracks are much faster so you should repeat all tests using different
    filesystems on i.e. only /dev/hdb1. The other thing is to get caching out of
    picture - you should do reboots between tests - create fs, reboot, test,
    create fs... cycle.

    PS my mail account is temporary defunct so please use Reply-To:

    > # -------------------------------------------------------------------- #
    > Untar the Linux 2.6.8.1 tarball on each file system.
    > # -------------------------------------------------------------------- #
    > ext2 | 46.88 sec @ 10% cpu
    > ext3 | 44.44 sec @ 12% cpu
    > jfs | 57.36 sec @ 15% cpu
    > rs3 | 37.03 sec @ 23% cpu
    > rs4 | 27.42 sec @ 42% cpu
    > xfs | 49.74 sec @ 17% cpu
    > # -------------------------------------------------------------------- #
    > Execute rm -rf linux-2.6.8.1 on each file system.
    > # -------------------------------------------------------------------- #
    > ext2 | 10.26 sec @ 22% cpu
    > ext3 | 10.02 sec @ 25% cpu
    > jfs | 26.67 sec @ 27% cpu
    > rs3 | 03.22 sec @ 74% cpu
    > rs4 | 25.58 sec @ 50% cpu <- What happened to reiserfs4 here?
    > xfs | 12.51 sec @ 47% cpu
    > # -------------------------------------------------------------------- #
    > Create a 500MB file with dd to each filesystem with 1MB blocks.
    > # -------------------------------------------------------------------- #
    > ext2 | 15.72 sec @ 26% cpu
    > ext3 | 17.04 sec @ 31% cpu
    > jfs | 29.57 sec @ 25% cpu
    > rs3 | 15.21 sec @ 27% cpu
    > rs4 | 23.96 sec @ 23% cpu <- What happened to reiserfs4 here?
    > xfs | 19.07 sec @ 29% cpu
    -
    To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
    the body of a message to majordomo@vger.kernel.org
    More majordomo info at http://vger.kernel.org/majordomo-info.html
    Please read the FAQ at http://www.tux.org/lkml/

    \
     
     \ /
      Last update: 2005-03-22 14:05    [W:0.024 / U:91.004 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site