From: "Miquel van Smoorenburg" <miquels@cistron.nl>
To: linux-kernel@vger.kernel.org
Subject: Re: uptime reset after about 45 days
Date: Thu, 30 Oct 2003 23:34:03 +0000 (UTC) [thread overview]
Message-ID: <bns75b$ssn$1@news.cistron.nl> (raw)
In-Reply-To: Pine.LNX.4.44.0310310005090.11473-100000@gaia.cela.pl
In article <Pine.LNX.4.44.0310310005090.11473-100000@gaia.cela.pl>,
Maciej Zenczykowski <maze@cela.pl> wrote:
>> After about 45 days or so, my uptime was reset. My idle time is correct.
>>
>> $ cat /proc/uptime
>> 94245.37 3686026.54
>>
>> $ cat /proc/version Linux version 2.4.20-gentoo-r1
>> (root@dpb2.resnet.calvin.edu) (gcc version 3.2.2) #6 SMP Thu Apr 17
>> 14:11:34 EDT 2003
>
>Uptime is stored in jiffies which is 32bit on your arch, which results in
>an overflow after 2^32 clock ticks. TTTicks were 100 HZ till recently
>(overflow after 470 or so days) now, they're 1000 -> overflows after 45
>days. Doesn't wreck anything except for uptime display - known problem,
No, that's only on 2.6, and it has been fixed in 2.6 too.
The 2.4 32 bits kernels run with HZ=100.
Sounds like the gentoo-kernel has just upped HZ to 1000 without
fixing these problems properly. That's .. disappointing.
Mike.
next prev parent reply other threads:[~2003-10-30 23:34 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-10-30 22:19 uptime reset after about 45 days Dave Brondsema
2003-10-30 23:09 ` Maciej Zenczykowski
2003-10-30 23:34 ` Miquel van Smoorenburg [this message]
2003-10-31 0:03 ` Robert Love
2003-10-31 10:37 ` Jakob Oestergaard
2003-10-31 13:20 ` Gene Heskett
2003-10-31 14:59 ` Mike Dresser
2003-10-31 15:26 ` Tim Schmielau
2003-10-31 16:40 ` Tim Schmielau
2003-11-01 3:08 ` Robert Love
2003-11-01 8:35 ` Tim Schmielau
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