General directives for migration/fr: Difference between revisions

General directives for migration/fr (view source)

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 === Archivage et compression ===
 !TRADUCTION EN COURS
-Most file transfer programs move one file of a reasonable size more efficiently than thousands of small files of equal total size. If you have directories or directory trees containing many small files, use [[Archiving and compressing files|tar]] to combine (archive) them.
+La plupart des applications de transfert de données déplacent plus efficacement un seul gros fichier que plusieurs petits fichiers dont le total serait équivalent. Si vos répertoires ou arborescences de fichiers comprennent un grand nombre de petits fichiers, combinez-les pour archivage en utilisant [[Archiving and compressing files|tar]].
 Large files can benefit from compression in some cases, especially text files which can usually be compressed a great deal. Compressing a file ''only'' for the purpose of transferring it, and then decompressing it at the end of the transfer, will not necessarily save time though. It depends on how small the file can be compressed, how long it takes to compress it, and the transfer bandwidth. The calculation is described in the "Data Compression and transfer discussion" of [https://bluewaters.ncsa.illinois.edu/data-transfer-doc this document] from the US National Center for Supercomputing Applications.