Afu sftp speed limit?

Pearl & Pearl-2 General
1

Pearl-2
Firmware Version 4.12.1d

afu sftp too slow.

– sftp
user.info afu[19191]: SFTP: File ‘Channel 4/Channel 4_Oct20_16-54-46.mp4’ (/data/videos/video4/VGA.1634716486.Channel 4.mp4) uploaded in 89s, 1.502 MB/s

– ftp
user.info afu[7976]: FTP: File ‘Channel 4/Channel 4_Oct20_16-54-46.mp4’ (/data/videos/video4/VGA.1634716486.Channel 4.mp4) uploaded in 3s, 52.962 MB/s

solution please

++add
network and sftp server is ok. other client is working normally.
only “afu sftp” slow!! please

3

Hello Song,

Thank you for bringing this forward to our attention. we have filed an investigation with our development team to test and confirm the issue to try and better understand what might be occurring

4

Hi there, I’m also seeing these slow speeds with SFTP, was there a resolution to this?

5

Hello Chris,

I don’t believe we are aware of any issues at this time that would cause a slow transfer via SFTP when using Pearl. Could please let me know which firmware is installed on your Pearl device?

6

Apologies for the old thread revival, but seems sensible to keep discussion here. I’m currently testing SFTP upload from a Pearl Nexus running v4.24.0 and noticing similar behaviour.

Assuming the OpenSSH is in use under the hood, it uses a default buffer size of 32KB. This can be tuned with the -B option as appropriate for memory available. As an example, Microsoft recommend increasing this to 262KB and tuning the max parallel requests (-R) when using SFTP as the channel for upload to Azure Blob Storage.

Is it possible to get some details on what’s in use here?

7

Hello, no worries for the revival, it does make sense to keep the discussion in the same place. I’m sorry you’re running into this issue! I’ve reopened the existing case to let the development team know this issue is occurring again.

I’m afraid that for now the only workaround is to decrease network latency as much as possible, this could mean excluding proxies, VPNs, modifying firewalls, using local servers, or other methods. I will make sure to pass your information on to our team, please let us know if you have any questions or updates in the future. Thank you!