zeroed fields in ps output

[Dan Nelson]

In the last episode (Apr 23), WaW said:
> I have noticed something strange with some processes running in my
> system. Look at ps output below: it says that nfsd, smbd and zsh are
> running for ~13992 days, that means their ELAPSED field == 0 in unix
> time. Moreover, RSS field also == 0. This happens in 1-2 days after
> system is booted up. Is this a bug or a feature?
> 
> System is 7.0-RELEASE/amd64. And if it makes sense - nfs and samba do
> export zfs filesystems.
> 
> USER      PID %CPU %MEM   VSZ   RSS      ELAPSED STARTED STAT COMMAND
> root      675  0.0  0.0  1616     0 13992-16:28:05 -       IWs  /sbin/devd
> root      784  0.0  0.0  3572     0 13992-16:28:05 -       IWs  nfsd:
> root      786  0.0  0.0  3572     0 13992-16:28:05 -       IW   nfsd:
> root      787  0.0  0.0  3572     0 13992-16:28:05 -       IW   nfsd:
> root      788  0.0  0.0  3572     0 13992-16:28:05 -       IW   nfsd:
> root      789  0.0  0.0  3572     0 13992-16:28:05 -       IW   nfsd:
> root      846  0.0  0.0 30000     0 13992-16:28:05 -       IW /usr/local/sbin/smbd -D -s /usr/local/etc/smb.conf
> waw      1021  0.0  0.0 17372     0 13992-16:28:05 -       IWs  /bin/zsh
> waw      1026  0.0  0.0 16220     0 13992-16:28:05 -       IWs  /bin/zsh
> root     1030  0.0  0.0 19400     0 13992-16:28:05 -       IW   su -

Processes with a W in the second column of STAT have been completely
swapped out; That definitely explains why RSS=0, and may explain why
etime is unavailable.  ps should probably print a "-" there (like it
does for STARTED) instead of an obviously wrong value.

-- 
	Dan Nelson
	dnelson at allantgroup.com