Question

Secure FTP rate limited - can this be disabled?

Asked by: DReade83

I've installed a fresh CentOS 5.3 installation, done a YUM upgrade to CentOS 5.4 and rebooted. When I try to ftp via secure FTP to the box, the upload rate is limited per connection to 500kb/s and download to 1mb/s. I've had a look through the options but can't find a way to disable this rate limit.

Can anyone help?

Thanks in advance.

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Asked On
2009-10-24 at 09:02:42ID24840557
Tags

secure

,

ftp

,

centos

,

sftp

Topics

CentOS

,

Linux

Participating Experts
1
Points
500
Comments
6

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Answers

 

by: Let_Me_BePosted on 2009-10-24 at 09:57:35ID: 25653044

Are you sure that this limit is not provided by your server hosting provider?

 

by: DReade83Posted on 2009-10-24 at 09:59:52ID: 25653055

The server is sitting behind me. :-)

CentOS is running on XenServer. I thought Xen could be doing it but can't see anything suspicious. Thought it could be something SSH related as the server only have sftp.

 

by: Let_Me_BePosted on 2009-10-24 at 10:09:59ID: 25653109

Try looking on Xen first, its very unlikely that it is limited on ssh/sftp side (although I don't know the CentOS specifics).

 

by: DReade83Posted on 2009-10-24 at 10:10:57ID: 25653113

OK thanks I'll have a look.

 

by: DReade83Posted on 2009-10-25 at 17:20:14ID: 25659110

I've setup an FTP server on the box and tried to transfer a 2GB file (this is what I was originally trying to do) and the file uploaded at 50MB/s. However the same file over SFTP transfers at 500KB/s.

Any ideas why it's so slow over SFTP?

Is this the very nature of SFTP?

Are there any options to disable this rate limiting?

 

by: Let_Me_BePosted on 2009-10-26 at 00:41:44ID: 25660242

SFTP is slow, because it is encrypted, try checking the CPU load while downloading the file.

20120131-EE-VQP-002

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