So I’m backing up my laptop in preparation for an upgrade from Fedora 13 to 15, and I notice that the data transfer speed is only about half a meg per second. Here is the output of ‘ethtool eth0’:
Settings for eth0:
Supported ports: [ TP MII ]
Supported link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Half 1000baseT/Full
Supports auto-negotiation: Yes
Advertised link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Half 1000baseT/Full
Advertised pause frame use: No
Advertised auto-negotiation: Yes
Link partner advertised link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
Link partner advertised pause frame use: No
Link partner advertised auto-negotiation: Yes
Speed: 100Mb/s
Duplex: Full
Port: MII
PHYAD: 0
Transceiver: internal
Auto-negotiation: on
Supports Wake-on: pumbg
Wake-on: g
Current message level: 0x00000033 (51)
drv probe ifdown ifup
Link detected: yes
Any ideas what the problem is?
Are the networks getting full?
http://dilbert.com/strips/comic/2006-02-22/
What protocol are you using for backup, and to where? It’s often the case that network transfers are limited by round-trips and overhead, especially if you’re processing a lot of small files with, e.g., ftp.
I’m using scp, drag’n’drop. That is, I’m logging into the laptop via GUI ssh.
Anyway, it’s finished now. It just took a lot longer than I thought it should have.
May I point out that laptops use slower hard drives?
And do not forget that you are sending compressed data through an encrypted tunnel.
May I point out that laptops use slower hard drives?
You may, but they’re not that slow.
And do not forget that you are sending compressed data through an encrypted tunnel.
Well, after I upgraded the laptop to Fedora 15, and moved the data back the other way, it was over 5 MB/s. Go figure.