[X2Go-User] Suspending sessions causes performance slowing down

[Ulrich Sibiller]

On Tue, Jun 2, 2020 at 3:04 AM h i <qpile117 at outlook.com> wrote:
> I ran a few tests and see the issue is GUI related in our case. It seems to speak to the 2nd reason for sleep you described regarding the sending of pixmaps.
>
> I ran two MATLAB scripts. Both including the same steps. However, 1 script suppressed pop-windows tracking the script status. The 2nd script did not suppress the pop-up windows displaying

What gui toolkit is matlab using?

> real-time status. The 1st script involving command lines ran in the same amount whether the session was active or suspended. No reduction of time or CPU usage. The 2nd script took much longer and CPU was reduced significantly while the session was suspended.
>
> A few questions:
>
> for X2GO_NXOPTIONS="sleep=0", what does 0 represent in time. If I set the value to 1000, what would that mean?

This defines how long nxagent should sleep. The unit should be
microseconds but there's a ticket for doublechecking that because it
looks like a mixup happened during implementation
(https://github.com/ArcticaProject/nx-libs/issues/928).

> Is the idle-nice-level=19 for suspended sessions the default setting?

As I said I don't know the superreniver feature in detail.

> Would the supernicer setting override the x2goagent sleep option setting?

no, they are two different things.

> What would be an example command for the -irlimit option in x2goagent.options file.

see https://github.com/ArcticaProject/nx-libs/issues/796

Uli