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Add website page for exrmetrics (#1971)
* Add website page for exrmetrics Signed-off-by: Cary Phillips <cary@ilm.com> * add missing backticks Signed-off-by: Cary Phillips <cary@ilm.com> * usage examples Signed-off-by: Cary Phillips <cary@ilm.com> * run description Signed-off-by: Cary Phillips <cary@ilm.com> * Use a pool... Signed-off-by: Cary Phillips <cary@ilm.com> --------- Signed-off-by: Cary Phillips <cary@ilm.com>
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‎website/bin/exrmetrics.rst‎

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..
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SPDX-License-Identifier: BSD-3-Clause
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Copyright Contributors to the OpenEXR Project.
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exrmetrics
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##########
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::
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exrmetrics [options] infile [infile2...] [-o outfile]
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Description
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-----------
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Read an OpenEXR image from infile, write an identical copy to outfile reporting time taken to read/write and file sizes.
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Options:
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--------
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.. describe:: -o file
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File to write to. If no file specified, uses a memory buffer.
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Note: file may be overwritten multiple times during tests
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.. describe:: -p n
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Part number to copy, or ``all`` for all parts. Default is ``all``.
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.. describe:: -m
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Set to multi-threaded (system selected thread count).
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.. describe:: -t n
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Use a pool of ``n`` worker threads for processing files. Default is
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single threaded (no thread pool).
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.. describe:: -l level
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Set DWA or ZIP compression level.
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.. describe:: -z,--compression list
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List of compression methods to test (``none/rle/zips/zip/piz/pxr24/b44/b44a/dwaa/dwab,orig,all``).
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Default is ``orig``: retains original method.
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.. describe:: --convert
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Shorthand options for writing a new file with no metrics:
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``-p all --type orig --time none --type orig --no-size --passes 1``
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Change pixel type or compression by specifying ``--type`` or ``-z`` after ``--convert``.
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.. describe:: --bench
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Shorthand options for robust performance benchmarking:
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``-p all --compression all --time write,reread --passes 10 --type half,float --no-size --csv``
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.. describe:: -16 rgba|all
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[DEPRECATED] force 16 bit half float: either just RGBA, or all channels. Use ``--type half`` or ``--type mixed`` instead.
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.. describe:: --pixelmode list
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List of pixel types to use (``float,half,mixed,orig``). ``mixed`` uses half for RGBA, float for others. Default is ``orig``.
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.. describe:: --time list
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Comma-separated list of operations to report timing for.
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Operations can be any of ``read,write,reread`` (use ``--time none`` for no
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timing)
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.. describe:: --no-size
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Don't output size data.
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.. describe:: --json
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Print output as JSON dictionary (default).
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.. describe:: --csv
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Print output in csv mode. If ``passes>1``, show median timing. Default is ``JSON``.
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.. describe:: --passes num
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Write and re-read file num times (default is 1)
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.. describe:: -h, --help
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Print this message
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.. describe:: -v
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Output progress messages
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.. describe:: --version
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Print version information
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Example Usage:
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--------------
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Basic usage: report sizes and read time, write time, reread time.
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.. code-block::
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% exrmetrics input.exr -o output.exr
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[
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{
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"file": "input.exr",
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"input file size": 3180931,
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"pixels": 396225,
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"channels": 4,
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"total raw size": 3169800,
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"compression": "none",
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"part type": "scanlineimage",
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"parts":
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[
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{
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"part": 0,
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"pixels": 396225,
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"channels": 4,
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"compression": "none",
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"part type": "scanlineimage",
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"total raw size": 3169800
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}
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],
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"metrics":
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[
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{
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"compression": "original",
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"pixel mode": "original",
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"output size": 3180960,
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"read time": 0.0061315,
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"write time": 0.0125296,
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"re-read time": 0.00393838
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}
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]
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}
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]
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Report read time, write time, re-read time with each available
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compression type:
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.. code-block::
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% exrmetrics --bench *.exr
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file name,compression,pixel mode,write time,count reread time,reread time
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input.exr,none,half,0.00147702,---,0.000437916
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input.exr,none,float,0.00124969,---,0.000425501
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input.exr,rle,half,0.00655444,---,0.00484196
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input.exr,rle,float,0.00823504,---,0.006153
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input.exr,zips,half,0.0243503,---,0.00615663
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input.exr,zips,float,0.0322755,---,0.00982083
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input.exr,zip,half,0.0224963,---,0.00438646
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input.exr,zip,float,0.0351248,---,0.00679192
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input.exr,piz,half,0.0194071,---,0.00750638
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input.exr,piz,float,0.0310976,---,0.0124893
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input.exr,pxr24,half,0.0230168,---,0.00463231
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input.exr,pxr24,float,0.0280254,---,0.00549154
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input.exr,b44,half,0.00880035,---,0.00188298
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input.exr,b44,float,0.0010236,---,0.000360021
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input.exr,b44a,half,0.00816444,---,0.00159444
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input.exr,b44a,float,0.00101096,---,0.000393375
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input.exr,dwaa,half,0.0340554,---,0.00496896
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input.exr,dwaa,float,0.0372704,---,0.00825308
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input.exr,dwab,half,0.0249792,---,0.00452442
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input.exr,dwab,float,0.0286153,---,0.0079899
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Just convert the file, printing no metrics:
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.. code-block::
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% exrmetrics --convert -z zip input.exr -o output.exr
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‎website/tools.rst‎

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@@ -35,6 +35,7 @@ after build (i.e. ``cmake --target install``), configure with
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bin/exrmakepreview
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bin/exrmaketiled
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bin/exrmanifest
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bin/exrmetrics
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bin/exrmultipart
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bin/exrmultiview
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bin/exrstdattr

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