Slow backup speed
Bug #401094 reported by
emilio
This bug affects 8 people
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
Duplicity |
Fix Released
|
Low
|
Unassigned | ||
Déjà Dup |
Confirmed
|
Low
|
Unassigned |
Bug Description
I am backing up from a laptop to an external NAS via WiFi. And I am running:
deja-dup 10.1-0jaunty1
duplicity 0.6.02-0jaunty1
I have tested the file writing speed of the NAS and it is of about 2MB/s. However when backing up with deja-dup the speed tops at about 300KB/s.
Interesting is also the fact that the backup on my dual core machine uses only 50% of the available computational power spread over the two cores.
Any idea on where the bottleneck might be?
Changed in duplicity: | |
importance: | Undecided → Medium |
status: | New → Confirmed |
Changed in duplicity: | |
importance: | Medium → Low |
Changed in duplicity: | |
status: | Confirmed → Fix Released |
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Try using the --asynchronous- upload option. It will overlap the marshal/upload cycle to an extent and keep the network a bit busier overall. Work on threading the marshaling process needs to be done, but the complexity of the various parallel, nested, complex iterators makes that a daunting proposition without an almost complete rewrite.