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SubjectRe: ext4/reiser3/btr directory create/read perf
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On Wed, Sep 30, 2009 at 9:05 PM,  <wbrana@gmail.com> wrote:
> I reduced benchmark to 10 directories and executed with strace
I meant 5 directories.

>
> Times with 10000 directories and dir_index enabled
>
> /mnt/md8: 64 kB chunks
> ext4
> void cfs::vdirs_create(): 4996 msec
> void cfs::vdirs_read(): 5100 msec
>

Times with 1000 directories and dir_index enabled
/mnt/md8: 64 kB chunks
reiser3
void cfs::vdirs_create(): 973 msec
void cfs::vdirs_read(): 60 msec
ext4
void cfs::vdirs_create(): 2435 msec
void cfs::vdirs_read(): 3326 msec
btrfs
void cfs::vdirs_create(): 1036 msec
void cfs::vdirs_read(): 155 msec

ext4 was 55 times slower than reiser3 in vdirs_read()


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