meaning of WCHAN addresses in ps?

From: David Starks-Browning (david@starks-browning.com)
Date: Wed Feb 25 2004 - 07:33:15 EST

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Greetings,

Is it possible to map a WCHAN memory address as displayed by ps? We
have a number of processes which have entered an "uninterruptable
sleep" state (ps flag U) that all show the same WCHAN address
(3129fc0). Is there some way to tell what *specifically* is causing
these processes to hang in this way? (The ps COMMAND field shows
"[env]" for most of these processes, but not all.) Is there some way
to tell whether 3129fc0 is a disk device, a particular kernel
semaphore, etc?

This is Tru64 V5.1B on a 16-cpu DS1280, with Patch Kit 3 applied.

Thanks for your help.

Kind regards,
David

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