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[Kai-Alexander Ude <question193846@xxxxxxxxxxxxxxxxxxxxx>]

Question #193846 on Duplicity changed:
https://answers.launchpad.net/duplicity/+question/193846

Kai-Alexander Ude proposed the following answer:
Swapping is not occurring cause the server has 24 GB of ram. Swap partition is 512 MB.
When backup is running ram load is not really high. About 4 GB is in use.
Is it possible telling duplicity to use more ram?
How can I prevent the swapping process?

> If swapping is occurring, split the backup into multiple parts that make sense and try again.
Split the backup into multiple parts means one backup profile for email, one profile for web, one profile for /etc ?

> did you make sure that your /tmp filesystem is not the issue here?
Changing temp dir to /var/tmp because /tmp is part of the system partition (/ mount point) with just 20 GB.
/var/tmp is mounted on a big partition, file system is ext3.

> maybe it get's sporadically slow?
Absolutely. Sometimes the duplicity temp file in /var/tmp needs just 5 minutes to be created.
Sometimes (another duplicity temp file) needs more than a couple of hours.

> btw. it seems that nearly your whole backup changes on incrementals. in case of e.g. database
> dumps we usually suggest not to compress them as this makes the impossible for librsync to
> detect only the changed portions within a file. compression is then done during backup.

Database dumps are not in the backup set of duplicity. Another process handles database backup.
And /var/lib/mysql is an excluded directory.

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