Sudden large increase in process size, machine hang

[Warren Kumari]

On Wed, Dec 3, 2014 at 1:39 PM, Thomas Schulz <schulz at adi.com> wrote:
> This last week we had a sudden large increase in the size of the named
> process resulting in the machine running out of memory and hanging.
> This is with bind 9.9.6 on a Solaris 10 Sparc machine.

This is probably going to be an annoying suggestion, but have you
considered using not a Sparc for this?

I was a huge Sun / Sparc fan (I *still* miss my Sun 4/360), but you
are in a definite minority using this for production BIND. Sometimes
there is safety in numbers...

W

>
> I have posted in the past about a steady continuous growth in the
> size of the named process. The Subjects for those posts are:
> failed: out of memory
> Process size versus cache size.
> bind-9.10.0-P2 memory leak?  (I hijacked someone else's thread)
>
> I have also filed a bug report about this continuous growth.
>
> The following measurements show the steady continuous growth over
> a little more than a month.
>
> Thu Oct 16 14:01:42 EDT 2014     46014
> Thu Oct 16 14:04:50 EDT 2014     99835
> Thu Oct 23 20:06:01 EDT 2014    317071
> Thu Oct 30 09:31:31 EST 2014    426647
> Thu Nov  6 20:06:01 EST 2014    532291
> Thu Nov 13 11:00:46 EST 2014    618143
> Thu Nov 20 20:06:00 EST 2014    701472
>
> But then last week the following happened.
>
> Wed Nov 26 08:06:00 EST 2014    758702
> Wed Nov 26 20:06:00 EST 2014   2099961
> Thu Nov 27 08:06:01 EST 2014   3416580
> Thu Nov 27 20:06:00 EST 2014   4618297
> Fri Nov 28 08:06:00 EST 2014   5733163
> Fri Nov 28 20:06:01 EST 2014   6801203
> Sat Nov 29 08:06:52 EST 2014   No output from the ps command.
>
> We were closed for thanksgiving when this happened. The only recursive
> queries would have been for email processing by Sendmail. Monday morning
> we had to reboot the machine by powering it down and back up.
> The logs did not show any unusual messages from the named process.
>
> Tom Schulz
> Applied Dynamics Intl.
> schulz at adi.com
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-- 
I don't think the execution is relevant when it was obviously a bad
idea in the first place.
This is like putting rabid weasels in your pants, and later expressing
regret at having chosen those particular rabid weasels and that pair
of pants.
   ---maf