I don't have two Intrepid machines to test this further, but I can test
Hardy-to-Intrepid if it would help. With the exception of the "file
operations dialogue", all line-speed measurements were taken with
iptraf.
Wireless G @ 54M
sftp peak: 1229 KB/s. Average is about 1 MB/s
sftp reports transfer speeds between 900 KB/s and 1.1 MB/s
gvfs-copy peak: 1174 KB/s. Average is about 900 KB/s
nautilus copy: Peak 12153 KB/s. Average is about 900 KB/s
File operations dialogue reports transfer speed as between 700 and 800
KB/s
Conclusion: wireless isn't fast enough to properly test this. Transfer
rates are in the same ballpark. Hardy and Intrepid have resolved the
worst of Gutsy's gvfs problems, for wireless, at least. The file
operations dialogue seems to use some sort of transfer speed averaging
function to smooth out the fluctuations in speed, but it needs work. I
haven't looked at the code, but I would imagine that making the sampling
period smaller (time or bytes transferred...which one work work better,
I'm not sure). Of course, CPU usage will go up if the sampling period
is too small... Maybe keep the refresh rate of the transfer speed
function the same, but have it look at the last MB transferred, instead
of however it's doing it now (I suspect it's looking at more than just 1
MB)
At any rate, John, could you please test using sftp on your gigabit
ethernet? I think 802.11g bandwidth is the bottleneck, for me -- which
isn't so bad. ;-)
Sebastien, are fuse mounts really not used? I tried to gvfs-copy my
sftp://URL, but it fails with: "Error copying file sftp://blah/blah: The
specified location is not mounted". Does gvfs-copy not use ~/.gvfs,
which is a mount of type "fuse.gvfs-fuse-daemon"? (for Hardy to Hardy.
I haven't yet checked to see if Intrepid maintains this behaviour)
--
gvfs performs slowly on bulk sftp transfers
https://bugs.launchpad.net/bugs/250517
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