network IO issue with Ubuntu 20.04 on RPI4

[Colin Law]

What are the IO errors?

Colin

On Fri, 2 Jul 2021, 23:07 R C, <cjvijf at gmail.com> wrote:

> Hello,
>
>
> I am running Ubuntu 20.04 on an RPI4, for data collection
>
>
> I am using a USB connected wifi dongle with long range antenna,  a USB
> connection to an AD board, and a USB stick (formatted ext4) for storing
> captured data from the AD board
>
>
> When I try to scp data off the USB stick to somewhere else, another
> machine, the RPI gets really slow, I do see some IO errors in syslog and
> at times the RPI even 'freezes'.
>
> When I boot the same hardware with an SD card that has centos 7
> installed it seems to work (not lightning fast, but  consistently works).
>
> (Centos 7 is 32bit btw.)
>
>
>
> Ubuntu 20.04 is 64bit (which I want to keep using because the data
> logger seems to work more stable/reliable when it comes to capturing data)
>
>
> Any ideas what might be causing this?  or where to start looking?
>
>
> thanks,
>
>
> Ron
>
>
> --
> ubuntu-users mailing list
> ubuntu-users at lists.ubuntu.com
> Modify settings or unsubscribe at:
> https://lists.ubuntu.com/mailman/listinfo/ubuntu-users
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.ubuntu.com/archives/ubuntu-users/attachments/20210703/fcdda15c/attachment.html>