Re: [RFC 0/2] squashfs parallel decompression

[Phillip Susi <psusi@cfl.rr.com>]

Did anything ever come of this?  Nobody ever responded and I don't see
it ever having been merged to Linus' tree.

On 7/11/2010 5:38 AM, J. R. Okajima wrote:
> Discussing about the performance of squashfs, I have tried enabling
> parallel decompression.
> On my test system, the elapsed time to read 59171 files randomly 10
> times becomes 33.25sec to 20.54sec (of course, CPU usage increases).
> 
> The base version is v2.6.33.
> 
> J. R. Okajima (2):
>   squashfs parallel decompression, early wait_on_buffer
>   squashfs parallel decompression, z_stream per cpu
> 
>  fs/squashfs/block.c          |   81 +++++++++++++++++------------------------
>  fs/squashfs/cache.c          |    1 +
>  fs/squashfs/dir.c            |    1 +
>  fs/squashfs/export.c         |    1 +
>  fs/squashfs/file.c           |    1 +
>  fs/squashfs/fragment.c       |    1 +
>  fs/squashfs/id.c             |    1 +
>  fs/squashfs/inode.c          |    1 +
>  fs/squashfs/namei.c          |    1 +
>  fs/squashfs/squashfs.h       |    3 ++
>  fs/squashfs/squashfs_fs_sb.h |    2 -
>  fs/squashfs/super.c          |   48 +++++++++++++++++++------
>  fs/squashfs/symlink.c        |    1 +
>  13 files changed, 83 insertions(+), 60 deletions(-)