Re: Writeable file already in use

[Reindl Harald]

Am 05.01.2016 um 19:05 schrieb Darcy Kevin (FCA):

http://unix.stackexchange.com/questions/190398/do-i-need-swap-space-if-i-have-more-than-enough-amount-of-ram

and the answer is clearly NO if you have *enough* RAM
you just have to define the "enough"

which means your workload and your useful buffercache fits in





[root@asterisk:~]$ free

Swap:            0B          0B          0B

what do you want to swap out there?

when a have a machine (in my case only VMs) running over a full month with a 1 GB swap file and it's not used with a single MB i do NOT need stackexchange to answer that question a dedicated authoritative-only namserver and to utilize the ressources a containered asterisk with hylafax and even a tiny webserver with a mysqld for the addressbook are doing that with 1.5 GB RAM: total used free shared buff/cache available Mem: 1,5G 150M 886M 18M 460M 1,3G the machine has all blocks of the disks it ever accessed, the software and the data in it's memory and would not come to the idea swap anything out anyways

-----Original Message-----
From: bind-users-boun...@lists.isc.org 
[mailto:bind-users-boun...@lists.isc.org] On Behalf Of Reindl Harald
Sent: Tuesday, January 05, 2016 12:19 PM
To: bind-users@lists.isc.org
Subject: Re: Writeable file already in use



Am 05.01.2016 um 18:03 schrieb Barry Margolin:

In article <mailman.13.1452009325.73610.bind-us...@lists.isc.org>,
   Alan Clegg <a...@clegg.com> wrote:

On 1/5/16 6:26 AM, Jan-Piet Mens wrote:

This might make you sad if you have lots of zones or large zones.

.. or even just want to look at what was transferred (whitout having
to recurse to a `dig axfr').

I see no reason to omit 'file' (except on a diskless slave ;-)

I ran into one exception to this rule - it seemed that the customer
had security requirements that did not allow "transient data" to be
written to disk.  They had to make sure that if the physical device
was stolen, all of their zone data didn't follow it out the door.

The in-memory copy is likely to end up in the swap partition

a proper dimensioned server has no swap partition at all, at least no one od 
the servers i am responsible since 2008 had one and *for sure* the memory 
requirement of a authoritative nameserver is pretty clear to don#t need it

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