On 11/23/2011 9:43 AM, krz...@gmail.com wrote:
What all those btrfs benchmark does not tell you that its performance
decreases (sys load increases) with growing size of btree. Creating
btrfs filesystem is instantaneous because initial tree is just
nothing...

While something is clearly wrong, this isn't it. Each snapshot is its own btree, and you said there is little churn each day, so they aren't getting significantly larger over time. Each snapshot is tracked in the tree of tree roots, so technically it is growing each time you take a snapshot, but 60 items is nothing.

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