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Re: [Duplicity-talk] Re: new ftp backend slower...


From: Kenneth Loafman
Subject: Re: [Duplicity-talk] Re: new ftp backend slower...
Date: Mon, 03 Sep 2007 06:57:10 -0500
User-agent: Thunderbird 1.5.0.13 (X11/20070824)

Nicolas Aspert wrote:
> Kenneth Loafman wrote:
>>> Replying to myself, I have found the reason for the performance hit in
>>> recent versions. It seems related to the compression options given to
>>> gpg: bzip2+level 9 is much to high. Reverting to zlib with default level
>>> reduced backup time by a factor 2 (25 hours to ~ 13 hours).
>> That was fixed in the 0.4.3 release (Aug 20th).  I added a --gpg-options
>> option for folks that want to use bzip2 instead of zlib.
>>
> 
> Hm I guess you misread :)
> I was already using 0.4.3 and found it slow because of the default
> options so forcing zlib compression and default level through
> --gpg-options solved my problem. I guess bzip2+level 9 requires too much
> cpu to process my 120+GB of data.

One of the changes for 0.4.3 was to remove the bzip2 options from gpg.py
and go back to the defaults (zlib).  If you had bzip2 options in gpg.py
then you did not have 0.4.3.

...Ken


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