Linux-kernel mailing list archive 2000-26,: weird kernel/ps interaction

# weird kernel/ps interaction

Tim Walberg (tewalberg@mediaone.net)
Fri, 30 Jun 2000 07:21:48 -0500

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I'm not sure whether this is a kernel issue or an issue
with ps, but I'm curious if anyone else has ever seen
this, and if there's a patch/workaround for it. Here's
the symptom:

calvin:/home/tew> date; sleep 5 & ps -e --format "lstart cmd" | grep 'sleep=
5 >
Fri Jun 30 07:13:49 CDT 2000
[2] 19173
Wed Jun 21 03:12:58 2000 sleep 5
Wed Jun 21 03:12:58 2000 grep sleep 5
7:13am up 18 days, 8:01, 9 users, load average: 0.21, 0.31, 0.43

Note the discrepancy between the current actual date and the
date that ps reports as the process start time. I find it
rather interesting that, if you do the math, the difference
between the two times is pretty close to exactly half of
the system uptime. I especially wonder if that's significant
since the system is a dual cpu machine.

System is based on a SuperMicro P6DNE (dual 200MHz PPro)
and is running 2.2.14+raid+onstream+crypto. I've seen this
since 2.2.5 (which is the earliest I've ever tried, it may
have happened before that) and through 2.2.15 (haven't tried
=2E16 yet, since I'm still waiting for the onstream patch for
it). The ps package is the procps-2.0.2-2 from RedHat (the
system was originally RH 6.0, but has had quite a few
other modifications).

Any info you can provide would be appreciated...

tia,
tw

--=20
+--------------------------+------------------------------+
| Tim Walberg | tewalberg@mediaone.net |
| 828 Marshall Ct. | www.concentric.net/~twalberg |
| Palatine, IL 60074 | |
+--------------------------+------------------------------+

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