Hi all,
I'm having a very slow speed when making a backup with Duplicity (~170KB/s) and 100% CPU usage.
Origin device:
- Debian testing up to date (no GUI, LUKS, soft-raid0)
- Duplicity 0.7.13.1-2
- Intel J1900
- 4GB RAM
- 2x 250GB SSD
Destination device:
- Raspberry Pi Zero W
- Raspbian up to date
- USB 2,5" WD HDD 2TB (destination drive)
But also tested to localhost with same result.
The testing file is a 500MB file with /dev/urandom content.
My first try with Duplicity was:
- duplicity foo scp://address@hidden:REMOTEPORT//path/to/destination/bar --ssh-askpass
After the low-speed results, I tried:
- duplicity foo scp://address@hidden:REMOTEPORT//path/to/destination/bar --ssh-askpass -v9 --no-compression --no-encryption
- (and other combinations, including --gpg-options without encryption and compression)
Always got the same: ~170KB/s.
I encrypted the file with GPG and I got ~25MB/s. Sending the same file directly with SCP to the Raspberry Pi was ~2.5MB/s.
I can't find why duplicity speed is only 170KB/s.
Attached you can find one -v9 log as example. Hope it helps.
Any ideas why is so slow?
Thank you very much!
S.
verbose9.txt