Grand Pauses in 4.3 on 750s

[lrr at princeton.UUCP]

At Princeton University, we are experiencing a problem that we cannot
explain.  We have 6 750s, some running 4.2, some running 4.3, and an 8600
running 4.3, nothing unusual in peripherals, all ethernetted together.
Every so often - once every few minutes - the 4.3 750s experience momentary
grand pauses when not even characters are echoed by those machines.
The 8600 shows no problem.  Monitoring the ethernet with the traffic program
from SUN shows nothing unusual, nor do the 750s show calm followed by
massive paging/swapping.  The 750s are essentially unused and are running
just the standard daemons from the distribution tape.

Any leads would be much appreciated.


Larry Rogers
Princeton University
Department of Computer Science
Engineering Quadrangle Building, Room C334
Princeton, NJ 08544

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