Massive "detected incoming data while idle"

A client transfer using sftp has like 37 minutes of the above message in the log.

What does that mean?

I doubt that answer will be useful for you. Why do you ask?

We have a client where their sftp transfers are taking a very long time.
The file does make it, but the log is full of these errors, so I suspect that there is some sort of hardware problem on their end.

Transfers from other clients are very reasonable.

cdlvj wrote:

We have a client where their sftp transfers are taking a very long time.
The file does make it, but the log is full of these errors, so I suspect that there is some sort of hardware problem on their end.

Transfers from other clients are very reasonable.

Well, this is not an error. It more like a debugging message. They may have a connection will big latency. The other clients are also using WinSCP?

Other clients with winscp are running very well.
Just the one with problems.

Is there an adjustment that the client can make, like mtu whatever?

cdlvj wrote:

Is there an adjustment that the client can make, like mtu whatever?

You may try to change settings suggested in this post.

options SFTPDownloadQueue and SFTPUploadQueue

Where are these options in the dialog?

cdlvj wrote:

options SFTPDownloadQueue and SFTPUploadQueue

Where are these options in the dialog?

These are hidden options that must be configured directly in the configuration file or registry.

Ahoy,

I cannot find those options.
Search of the registry did not find those options.

I changed the config to produce the ini file, and did searchs for those parms.

This is version 3. There was a winscp3.ini
Thanks

cdlvj wrote:

I cannot find those options.
Search of the registry did not find those options.

I changed the config to produce the ini file, and did searchs for those parms.

They are not there by default. You need to add them manually like:

[Sessions\My session]
HostName=myserver.com
SFTPUploadQueue=10