[PATCH] xfstests: improve test 286 for repeated unwritten/hole extents.

[Mark Tinguely]

On 07/03/12 02:30, Jeff Liu wrote:
> Hello,
>
> I'd like to enlarge the test coverage of 286 to includes file mapping with repeated hole/unwritten/unwritten_without_data/data intersections.
>
> Those two new sub-tests could help verifying the current seek_data/seek_hole improvements.
>
> Besides, I observed a weird thing at the diff of 286.full, look at the the sparse file creation output,  there seems to be a significant
> I/O degradation compare to the old test01/test02 IOPS results:
>
> -1 MiB, 256 ops; 0.0000 sec (1.242 GiB/sec and 325699.7455 ops/sec)
> +1 MiB, 256 ops; 0.0000 sec (70.161 MiB/sec and 17961.1310 ops/sec)
>
> I run the test on same machine and same partition, I recalled the old result is generated against around 3.4-rc2(not very sure), now is updated
> to 3.5-rc4, does anyone hit that?
>
>

Quick feedback. I don't see any degradation.

OLD:  1 MiB, 256 ops; 0.0000 sec (484.027 MiB/sec and 123910.9390 ops/sec)
THIS: 1 MiB, 256 ops; 0.0000 sec (494.560 MiB/sec and 126607.3195 ops/sec)

All the tests are very close to the unpatched results.

> Signed-off-by: Jie Liu<jeff.liu at oracle.com>
>
> ---
>   286      |   87 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++-
>   286.full |   82 +++++++++++++++++++++++++++++++++++----------------------

Please, drop the 286.full patch.

--Mark Tinguely.