What's the best way to transfer files between pogoplugs

[momentum]

Not yet. I used rsync -P with a single file for testing since I found it would show the transfer speed. Don't know how cp would show the speed information. still googling it...

$this->bbcode_second_pass_quote('WarheadsSE', 'H')ave you tried `cp -ar` ?

[jkgm]

$this->bbcode_second_pass_quote('WarheadsSE', 'T')hat rsync method uses ssh, which isn't exactly the worlds most performant network transport.

[WarheadsSE]

*cough*

PLATFORM PERFORMANCE.

You're comparing a Volkswagon Beetle to a Factory V8 Mustang.

[Geoff]

I use rsync all the time, and I find it reliable but not very fast. I think what slows it down on the Pogo is where it computes a digest of each block of a file to compare with that of the file at the opposite end of the transfer. The PLX7820 chip in the Pogo Pro contains a specialized hardware module for doing digest and encryption. I think it might make a big difference if this module were used, instead of using the general-purpose CPU to digest the file blocks. However, I doubt that a kernel module exists to take advantage of this.

[jkgm]

$this->bbcode_second_pass_quote('WarheadsSE', '*')cough*

PLATFORM PERFORMANCE.

You're comparing a Volkswagon Beetle to a Factory V8 Mustang.

[momentum]

I tried several tweaks around rsync. The best speed i got is around 10MB/s with my situation, using "rsync -WP --inplace" and mount cifs (rather than ssh). I guess that's it since the limitation of pogoplug (cpu, ram, etc)? not so bad for me for now since I could at least run those job on the background now without keep my pc open.

$this->bbcode_second_pass_quote('WarheadsSE', 'S')ure,
- copy directly, instead of from Windows (via samba)
- make sure the copy is over ethernet, not wireless
- use rsync, if possible
- depending on the speed of actual disks, that might be a hamper.

The best I have managed is about 22MB/s sustained, which is 170Mb/s over gigabit ethernet. Throw wireless in its place and it would have capped at ~15MB/s, maybe. The fact that there is not 1 GB of RAM makes a huge difference to what people are accustomed to as ""normal""

[WarheadsSE]

Right, and I should say that my 22MB/s was to a SATA disk, with ext3/4. I will make note that with the iOmega HMCE, which has 256MB ram, I was able to sustain ~30MB/s so it's obvious RAM is a limiting factor.