Martin, first, thanks for taking the time to file this bug report and
help us make Ubuntu better.
This sounds more like a bug in the kernel's scheduling than openssh itself, I
suspect anything trying to get
scheduled would have problems competing. Opening task against the kernel as
well.
If you renice "prog.X" with
sudo renice `pidof prog.X` 5
Does the effect go away, or at least reduce significantly?
Also once you've ssh'd to the machine, do other programs run sluggishly?
Marking openssh task incomplete pending response (If it does go away
with renice, and/or all programs that need CPU are sluggish, then this
is not an openssh problem IMO).
** Also affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Changed in: openssh (Ubuntu)
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/782092
Title:
ssh server extremly unresponsive
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