[downtime] CS System Downtime, Wednesday, November 25, 2015, 07:30-08:30

Date: Wednesday, November 25, 2015 (07:30-08:30)

Who is affected:
All users of CS Department public login (cycles/penguins/portal) and
compute (ionic) systems.

What is happening:
During this window, these machines will be rebooted in order to clear some
unkillable user processes which are interfering with some research work.

We will also take this opportunity to make configuration changes to reduce
the likelihood of recurrence for this and related issues.

Why is it happening:
As some user processes have entered an unkillable state, and as those
processes are preventing research work, they require a system reboot to
clear.

We will post updates to the status page: http://www.csstaff.org
as necessary.

If this downtime will cause you undue hardship, please contact
csstaff@cs.princeton.edu immediately, so we can discuss options to reduce
any negative impact. Your patience is appreciated.
Sincerely,
CS Staff
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