Le 08/10/2012 00:47, Goffredo Baroncelli a écrit :

Please could you clarify if you are using the "autodefrag" options
when you have the performance problem ?

I use autodefrag on all volumes systematically, except on volumes that I
use for really big files that would always be defragmenting (i.e.
virtual machines, but I seldom use virtual machines, and my performance
problem is general, I don't take VMs into consideration in this respect...)

Are you in position to to reduce the number of snapshot from hundreds
to few  ?

I might do this as an experiment, but it would defeat one of the
prominent purposes for which I use BTRFS, and the number of snapshots
would grow immediately again, as I use the excellent OpenSuSE "snapper"
tool, that makes a snapshot every single hour...

Kind regards.

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