[Borgbackup] performance problem

[Thomas Waldmann]

>> What's the filesystem type (see mount output)?
>   xfs ( /dev/sdb on /dati type xfs (rw,noatime,nodiratime) )

OK, so there should be stable inode numbers.
Also, you will have good metadata stream duplication as the atimes are
not changing.

> and I had this new messages
> 
> Synchronizing chunks cache...
> Archives: 3, w/ cached Idx: 0, w/ outdated Idx: 0, w/o cached Idx: 3.
> Fetching and building archive index for utenti-2017-08-30-19 ...
> Merging into master chunks index ...
> Fetching and building archive index for utenti-2017-08-28 ...
> Merging into master chunks index ...
> Fetching and building archive index for utenti-17-08-29-19 ...
> Merging into master chunks index ...
> 
> Are these messages ok ?

The chunks cache needs to get resynchronized if another client is
writing to same repository, causing a chunks cache incoherency.


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