From: linux@horizon.com
To: stockall@magma.ca
Cc: linux-kernel@vger.kernel.org
Subject: Re: Clock inaccuracy seen on NVIDIA nForce2 systems
Date: 14 Oct 2004 01:27:54 -0000 [thread overview]
Message-ID: <20041014012754.25198.qmail@science.horizon.com> (raw)
> The system is running 2.6.9-rc4 and has been up for 2 days. I'm showing
> an offset of -32 seconds and growing.
That's -185 ppm (parts per million) error, or -0.0185%.
Typical cheap quartz crystals are +/- 100 ppm, but there are some cheaper
than that, and ceramic resonators like
http://www.ecsxtal.com/cerares.htm
I know Dave Mills learned from experience that the original +/-100 ppm
specs in NTP weren't wide enough and he had to change it to cope with
+/-500 ppm error in some clocks.
It *could* just be your motherboard's clock source.
next reply other threads:[~2004-10-14 1:28 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-10-14 1:27 linux [this message]
2004-10-14 12:09 ` Jesse Stockall
-- strict thread matches above, loose matches on Subject: below --
2004-10-14 13:44 Francois Meyer
2004-10-13 20:30 Andy Currid
2004-10-13 21:10 ` Jesse Stockall
2004-10-14 0:45 ` Gene Heskett
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20041014012754.25198.qmail@science.horizon.com \
--to=linux@horizon.com \
--cc=linux-kernel@vger.kernel.org \
--cc=stockall@magma.ca \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
all inboxes | Powered by JetHome®