Date: Fri, 7 Feb 2003 14:49:40 +0100 (CET) From: Oliver Fromme <olli@secnetix.de> To: freebsd-stable@FreeBSD.ORG Subject: Re: Invalid ps start time values for kernel processes ? Message-ID: <200302071349.h17Dnefo076099@lurza.secnetix.de> In-Reply-To: <200302071245.14865.paul.koch@statscout.com>
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Paul Koch <paul.koch@statscout.com> wrote:
> The ps output value for STARTED appears to be incorrect for
> kernel started processes. I found this while writing a tiny ps
> for our freebsd based network appliance. The start time returned
> from /proc/{normal pid}/status (man procfs) appears to be in
> UTC while the start time for a kernel process appears to be
> localtime (or the other way round). This gave me wild values.
> Is this correct behaviour ?
Is your CMOS clock running with local time, rather than UTC?
(i.e. does the file /etc/wall_cmos_clock exist?)
In that case, the kernel will start up with the wrong time
information, because it doesn't know the timezone you're in
(the kernel always uses UTC internally). This information
is corrected by the adjkerntz program in the early stages
of the boot process.
However, the kernel processes start before that correction
happens. If you were living east of Greenwich (i.e. positive
timezone offset), the start time values would even be in the
future.
If FreeBSD is the only operating system on that machine,
I suggest that you run the CMOS clock with UTC, avoiding the
problem alltogether. Of course, you can also just ignore
the wrong start values. They should not cause any harm.
I don't think there is an easy way to fix the problem.
Regards
Oliver
--
Oliver Fromme, secnetix GmbH & Co KG, Oettingenstr. 2, 80538 München
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and may not necessarily reflect the opinions of secnetix in any way.
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