Date: Thu, 24 Sep 2020 12:06:09 +1000 From: Dewayne Geraghty <dewayne@heuristicsystems.com.au> To: "freebsd-questions@freebsd.org" <freebsd-questions@freebsd.org> Subject: ps values with a "-", inexplicable? Message-ID: <9d6f278f-935d-322e-b40e-52622d56052b@heuristicsystems.com.au>
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While parsing process information, things failed when expected numerical
values returned a "-".
Can anyone explain why they have a hyphen value? I would expect a zero
if unused ...
Examples
# ps -ax -o
pid,ppid,inblk,oublk,msgrcv,msgsnd,majflt,pri,nswap,nvcsw,nivcsw,command
-p 6553
PID PPID INBLK OUBLK MSGRCV MSGSND MAJFLT PRI NSWAP NVCSW NIVCSW COMMAND
6553 1 - - - - - 52 - - -
adjkerntz -i
I first noticed the hyphens when a parser complained due to the parent
openkim returning hyphens similar to the above, but after a process
restart and two days of running the opendkim is returning an expected:
# ps -ax -o
pid,ppid,inblk,oublk,msgrcv,msgsnd,majflt,pri,nswap,nvcsw,nivcsw,command
|grep opendkim
49616 1 0 0 0 0 0 52 0 2
0 /usr/local/sbin/opendkim -l -p /var/run/milteropendkim/sock -u
dkim:mailnull -P /var/run/milopendkim/pid -x /usr/local/etc/opendkim.conf
Any insight appreciated?
My objective is to examine processes that demonstrate excessive resource
use, and if the hyphens indicate no value, or for my purposes zero
resources then should I simple convert hyphens to zeros without loosing
information?
This is on
FreeBSD 12.2-STABLE FreeBSD 12.2-STABLE #0 r365645M: amd64 1202500 1202500
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