[IPython-dev] KernelRestarter infinite loop

[Ruslan Korniichuk]

Hi all,

We are working on writing the *rk* administration utility (home page:
https://github.com/korniichuk/rk).
If the *rkscript* runs LESS than 3 seconds and kill itself
(sys.exit(1)),- *jupyter
notebook *working GOOD:
    KernelRestarter: restarting kernel (*1/5*)
    ...
    KernelRestarter: restarting kernel (*4/5*)
But, if the *rkscript* runs LONGER than 3 seconds and kill itself
(sys.exit(1)),- jupyter notebook working BAD (infinite loop):
    KernelRestarter: restarting kernel (*1/5*)
    KernelRestarter: restarting kernel (*1/5*)
    ...
Variable *time_to_dead* = 3 sec (kernel heartbeat interval in seconds) in
the *restarter.py* file.
*How we can change heartbeat interval or do something to GOOD working of
sys.exit(1), after the third second?*

It is important for us, because we need to check a remote machine
availability (ping), to check SSH login w/o password, to responsive to the
excepts.
---
Best regards,
Ruslan Korniichuk
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