Re: SFTP listing remote files very slowly

are you doing reverse lookups on the sshd side?  If so, the time could
be DNS expiration.  Put the hostnames of the servers in the hosts file
and see if that improves your transfer time.

Cheers!

-Tim

  On Wed, 2007-07-18 at 17:06 +0200, Mohacsi Janos wrote:
> Dear All,
>       What can be the problem with SFTP with listing the remote 
> directory. The server1 is a FreeBSD 6.2 and server2 is a FreeBSD 4.11
>
> FreeBSD 4.11:
>   OpenSSH_3.5p1 FreeBSD-20030916 pat OpenSSH_3.*
> FreeBSD 6.2:
>   OpenSSH_4.5p1 FreeBSD-20061110, OpenSSL 0.9.8e 23 Feb 2007
>
> Some test results:
>
> 1. from client to server1 via sftp
> mohacsi@client> time sftp -b teszt server1
> sftp> dir docs
> ....
>
> 0.016u 0.041s 0:30.82 0.1%      116+659k 0+0io 0pf+0w
>
> 2. from client to server1 via ssh
> mohacsi@client> time ssh server ls docs
> ....
> 0.012u 0.025s 0:00.88 3.4%      216+1306k 0+0io 0pf+0w
>
> 3. from client to server2 via sftp
> mohacsi@client> time sftp -b teszt server2
> sftp> dir docs
> ....
> 0.032u 0.024s 0:00.53 9.4%      112+836k 0+0io 0pf+0w
>
> 4. from client to server2 via ssh
> mohacsi@client> time ssh server2 ls docs
> ....
> 0.037u 0.000s 0:00.32 9.3%      144+802k 0+0io 0pf+0w
>
> As you can see in the test 1: Directory listing took >30 seconds!
>
> Client was  OpenSSH_4.5p1 but similar results with WinScp....
>
> What can be the problem?
>
> Thanks for any hints!
>
> Janos Mohacsi
> Network Engineer, Research Associate, Head of Network Planning and Projects
> NIIF/HUNGARNET, HUNGARY
> Key 70EF9882: DEC2 C685 1ED4 C95A 145F  4300 6F64 7B00 70EF 9882