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[Duplicity-talk] New feature: async download volumes

From: Denis Klimov
Subject: [Duplicity-talk] New feature: async download volumes
Date: Fri, 19 Mar 2010 15:00:11 +0500
User-agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv: Gecko/20100202 Thunderbird/3.0.1


I patched duplicity for add new feature: asynchronously download volumes in restore procedure. I add new FileobjIter class for it and use asyncscheduler from duplicity for implement it. New duplicity options for use it: --num-download-threads

It very improve download speed in some case. For example, with amazon s3 storage I have statistics:
1 download thread = 3 МB/s,
2 download threads = 6 MB/s,
7 download threads = 20,6 MB/s.

You can see patches for 0.6.08b at

I'll be happy if upstream developers apply it.

P.S. Sorry for my badly english :)

Denis Klimov

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