Date: Mon, 02 Feb 2009 17:37:26 +0000
From: Owen Rees <owen.rees@hp.com>
To: cygwin@cygwin.com
Subject: RE: Finding either boot time or login time
Message-ID: <B74CC1CB4CF75003190E29AE@rrees2.emea.hpqcorp.net>
In-Reply-To: <7b4dai$em8g8@dmzms99901.na.baesystems.com>
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--On 02 February 2009 11:54 -0500 Cooper, Karl \(US SSA\) wrote:

> I don't know perl, but I did try both of these one-liners on my
> Cygwin 1.7 setup, and the output differs (by one second).  I thought
> that was interesting.

I get a one second difference between the two formulae as well (due to the 
use of 'int' in one but not the other) but that is insignificant compared 
to the 1 hour and 43 minutes by which both are wrong (and that is since 
rebooting at 08:57 this morning).

As far as I can tell, uptime does not include time spent in hibernation (or 
suspend/sleep probably).

A little web searching suggests that not counting sleep time is probably 
consistent with recent Linux behaviour.

I also noticed that the Windows Vista 'systeminfo' command gives the same 
wrong answer for "System Boot Time".

-- 
Owen Rees; speaking personally, and not on behalf of HP.
========================================================
Hewlett-Packard Limited.   Registered No: 690597 England
Registered Office:  Cain Road, Bracknell, Berks RG12 1HN


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