[bind10-dev] shared memory data source: # of zones / shmem segment

[Shane Kerr]

Michal,

On Thursday, 2013-02-28 08:41:03 +0100, 
Michal 'vorner' Vaner <michal.vaner at nic.cz> wrote:
> Hello
> 
> On Wed, Feb 27, 2013 at 10:50:35PM -0800, JINMEI Tatuya / 神明達哉
> wrote:
> > Right now I'm not sure which approach we should take for the coming
> > task.  Maybe we begin with a single segment and consider extending
> > it as we see the need?
> 
> I kind of assumed we would do many segments from the beginning (one
> zone in each, possible more zones if they are small). But I don't
> remember the reason for assuming so, therefore I can't back it up by
> some actual argument. Maybe just if we wanted to support views by
> having multiple Auths with different set of zones each, we could just
> pick the right segments in each auth instead of creating the complete
> mapping for each of them, but that's far-fetched, since we don't know
> much about views support.

I also assumed multiple segments, although I am now wondering if we
will quickly run into system limits, such as a maximum of 100 shared
memory regions per system or something like that (google SHMMNI for
some examples).

So I guess to avoid such problems we should begin with a single
segment, or at least the notion of keeping a small number of segments.

Cheers,

--
Shane
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