Re: How to run IOC in docker containers properly

["Johnson, Andrew N. via Tech-talk" <tech-talk at aps.anl.gov>]

Hi Lewis,

On Jun 18, 2020, at 2:24 PM, J. Lewis Muir <jlmuir at imca-cat.org> wrote:

On 06/18, Johnson, Andrew N. via Tech-talk wrote:

It’s a risk, but screen has been an essential part of our systems since we started using soft IOCs without our hitting that issue to my knowledge. I don’t have an alternative solution, I assume tmux might behave the same?

If you're asking whether tmux can log, the answer is yes, using the
pipe-pane command.

No, I’m asking what tmux does if you run an IOC in it that generates messages occasionally, then use the ability to look back in its scroll-back buffer and leave your window scrolled to the very beginning of the buffer for a long time after the buffer has reached its size limit. Does it eventually freeze the IOC by imposing flow-control on the stdout/stderr stream from the IOC?

That was the problem that GNU Screen apparently has which triggered the writing of procServ.

Eric, you would probably never leave a Screen session in that state yourself, but please give it a go if you have time...

- Andrew

-- 

Complexity comes for free, simplicity you have to work for.