9fans - fans of the OS Plan 9 from Bell Labs
 help / color / mirror / Atom feed
From: erik quanstrom <quanstro@quanstro.net>
To: 9fans@9fans.net
Subject: Re: [9fans] installs which hang
Date: Sun,  8 Jun 2014 04:05:47 -0400	[thread overview]
Message-ID: <591cd270c5099f5227ae30f89d28141f@brasstown.quanstro.net> (raw)
In-Reply-To: <8ffbd9557190ec716f5b3d79dd6fce8e@quintile.net>

On Sat Jun  7 19:22:41 EDT 2014, steve@quintile.net wrote:
> > - timesync.  i saw this issue one in 2008, so i don't remember much about it.
>
> I think this was a bug in cron. When the time lept forward as timesync corrected
> the time at boot cron would try to run all the intervening events and hang the machine.
>
> cron now ignores time changes if they are big.
>
> Having said this my memory is a little hazy too...

it can also lock up the machine updating "too fast".  without help
from cron.  i just don't remember the details of why this resulted
in a hang.

- erik



      reply	other threads:[~2014-06-08  8:05 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-06-07 15:45 erik quanstrom
2014-06-07 17:16 ` Ramakrishnan Muthukrishnan
2014-06-07 23:21 ` Steve Simon
2014-06-08  8:05   ` erik quanstrom [this message]

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=591cd270c5099f5227ae30f89d28141f@brasstown.quanstro.net \
    --to=quanstro@quanstro.net \
    --cc=9fans@9fans.net \
    /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;
as well as URLs for NNTP newsgroup(s).