[OE-core] [PATCH] systemd: decreasing default RLIMIT_NOFILE on qemu bsp

[Richard Purdie]

On Tue, 2019-08-20 at 22:20 +0200, Alexander Kanavin wrote:
> On Tue, 20 Aug 2019 at 15:46, Mark Hatle <mark.hatle at windriver.com>
> wrote:
> > Looking at what my customers are doing, I completely agree.  I look
> > at the
> > design criteria for my customer's devices and I'm seeing 256MB as
> > -very- common.
> >  More happens, but it's rare still.  (But I have some customers
> > with GB of ram,
> > but that is usually to support their application, but the base
> > system!)
> > 
> > (Note, I do have customers -with- graphics requirements [X11] that
> > are in the
> > 128/256 MB ram ranges.  In most cases OpenGL is something they
> > would like, but I
> > don't believe it's a hard requirement for them.)
> > 
> > I do still have many customers with 128 MB of ram requirements.  So
> > it's
> > important for us to set a reasonable baseline (256MB).  So going
> > under this
> > requires 'work', but I think that is acceptable.
> 
> For contrast, in the kind of system I am helping to develop
> everything is measured in gigabytes. RAM should be in the ballpark of
> 10Gb. Disk storage maybe 10x that. OpenGL is at the foundation of
> display output and isn't optional in any way. There's basically every
> connectivity option enabled, multiple cameras, touchscreens and
> whatnot. The whole thing will eventually look not that far from iOS
> in terms of UI and capabilities and containerized 3rd party apps
> (except it *also* needs to support multiple screens and multiple
> users). And yes, it's all pulled together through bitbake and a zoo
> of layers, images and target configurations. Yocto is able to target
> cases like this, which is amazing - hopefully this clears up a bit
> where I am coming from in this, even if it's a 'minority' position.

I don't think its a minority and there are people who have both kinds
of system, sometimes in the same build.

We just need to be mindful we have a spectrum of target users and low
RAM is one part of that matrix. I want the project to support the
larger use cases too.

Cheers,

Richard