FileZilla 3.3.5-rc1 and sftp speeds

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jdratlif
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FileZilla 3.3.5-rc1 and sftp speeds

#1 Post by jdratlif » 2010-11-08 15:17

I noticed this in the changes list on the main page:
Improved SFTP transfer speeds
I've been trying to improve my transfer times when moving files between my laptop and my desktop. So I got a new Gigabit router (to replace an older one that only did 100 Mbps) and new CAT-6 ethernet cables. I was thinking that I used to get close to 10 MBps before the router switch, but afterwords I only get between 2.5 and 5.

I've been looking into the problem. I setup my Linux box with an NFS server as Windows 7 has an NFS client built-in, and I got transfer rates of around 20 MBps. So I was thinking maybe SSH overhead is slowing down my transfers.

Had something changed in recent FileZilla versions? Should I see a big change with this new release in file transfer speed?

I'm going to test an FTP server and a Samba server to see if I get better results than the NFS server, but I really like FileZilla and I already have OpenSSH installed and configured, and would like to let it alone if possible.

Background if it matters:

Laptop: Windows 7 64-bit Intel Core2Duo 2.0GHz Integrated Dell 1 Gigabit ethernet CAT-6 SATA.
Desktop: Gentoo Linux 64-bit Intel Core2Quad 2.66GHz Integrated RealTek 1 Gigabit ethernet CAT-6 SATA OpenSSH 5.5
Netgear WNR3500L Gigabit Router using NAT
Both machines are plugged in directly to the router and are not setup in any power saving configuration.
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mblume1
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Re: FileZilla 3.3.5-rc1 and sftp speeds

#2 Post by mblume1 » 2010-11-08 19:38

CPU or disk write speed can limit transfer speeds as well.

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boco
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Re: FileZilla 3.3.5-rc1 and sftp speeds

#3 Post by boco » 2010-11-08 23:51

SSH isn't an overall speedy protocol, unfortunately, so "increase in SSH speed" may have to be seen relatively, I guess. Previously it could be VERY slow, like in the 2-3 KiB/s range.
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botg
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Re: FileZilla 3.3.5-rc1 and sftp speeds

#4 Post by botg » 2010-11-08 23:55

How fast are the transfer speeds for plain FTP?

What happens if you directly connect the two machines with a crossover cable?
I was thinking that I used to get close to 10 MBps before the router switch, but afterwords I only get between 2.5 and 5.
And you only changed the router/switch? Then either it's a problem with the switch or one (or both) of the clients doesn't like Gigabit, e.g. misconfiguration, outdated drivers, broken hardware and so on.

jdratlif
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Re: FileZilla 3.3.5-rc1 and sftp speeds

#5 Post by jdratlif » 2010-11-09 00:28

Haven't tested ftp yet. I setup pure-ftpd yesterday. I'll see what happens with speed.

I'm also interested as to what was done in FileZilla to increase sftp transfer speed.

Thanks.
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Re: FileZilla 3.3.5-rc1 and sftp speeds

#6 Post by botg » 2010-11-09 06:57

Set SO_SNDBUF.

jdratlif
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Re: FileZilla 3.3.5-rc1 and sftp speeds

#7 Post by jdratlif » 2010-11-15 20:33

I don't have a crossover cable, so I can't test that.

As for plain FTP, the speed becomes steady around 45 MB/s (measured by FileZilla).

That's the speed I was looking for, so I guess I have my solution.
http://jdrrant.blogspot.com/ - CODEpendent Blog

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