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From: "Romeyke, Andreas" <Andreas.Romeyke@slub-dresden.de>
To: "tiff@lists.maptools.org" <tiff@lists.maptools.org>
Date: Mon, 25 Jan 2016 19:21:39 +0100
Thread-Topic: checkit_tiff, fixit_tiff - question about memmapped I/O, and
	invitation for quality checks
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Subject: [Tiff] checkit_tiff, fixit_tiff - question about memmapped I/O, and
 invitation for quality checks
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Dear libtiff-Developers,

Because we need some validation and repair tools for TIFFs by reasons of di=
gital preservation, we developed =


* fixit_tiff to repair broken baseline TIFFs (see https://github.com/SLUB-d=
igitalpreservation/fixit_tiff)
* checkit_tiff to validate baseline TIFFs against fine granular rules (see =
https://github.com/SLUB-digitalpreservation/checkit_tiff)

To ensure that we does not have (a lot of) bugs included, we invite you to =
test both tools and verify stability of checkit_tiff against your TIFF coll=
ection.

Additional I have a question about the flag "rm"/"rM" of the TIFFOpen() fun=
ction. I am right, that the "rM" uses memmapped I/O? But with my tests, it =
does not differ in speed with "rm"-mode. Could you explain, how it works in=
 detail?

Thanks in advance.

Mit freundlichen Gr=FC=DFen
With best regards,

Andreas Romeyke
--
team member "long-term preservation"

Saxon State- and University Library Dresden (SLUB)
Department 2 (IT), Division 2.3 (infrastructure and digital long-term prese=
rvation) =

Zellescher Weg 18 | 01069 Dresden
phone: +49 351 4677 216
E-Mail: Andreas.Romeyke@slub-dresden.de =

http://www.slub-dresden.de/ | @slubdresden


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