[Xastir] Local OSM tile server

[Brian Heaton]

When I built a local OSM tile server a couple years ago, I found that
moving to an SSD improved performance by an order of magnitude. The system
was definitely IO bound by the disk random access time for reads.


73-KY9K/Brian

On Sat, Dec 22, 2018, 10:44 Lee Bengston <lee.bengston at gmail.com wrote:

> On Sat, Dec 22, 2018 at 7:34 AM Jason KG4WSV <kg4wsv at gmail.com> wrote:
>
> > On Fri, Dec 21, 2018 at 9:21 PM Lee Bengston <lee.bengston at gmail.com>
> > wrote:
> >
> > > I tried the procedure below today on a cheap laptop with a weak Celeron
> > > CPU.
> >
> >
> > Thanks Lee.  Can you give us some specs on the computer? clock rate, #
> > cores, RAM, maybe some disk specs like interface speed or RPM?  Did you
> use
> > this to feed maps to xastir running on the same machine?
> >
>
> Hey Jason, It's an Asus laptop with a dual core Celeron N2830 CPU @ 2.16
> GHz.  It was very low end - got it in 2015 from Micro Center for something
> like $170 or $180 (maybe even less - can't remember exactly).  I am indeed
> feeding maps to Xastir running on the same machine.  With the web server
> running on the same machine it's just a matter of using a geo file in the
> same format of the online OSM maps that points to the localhost instead of
> a remote web server.
>
> >
> > Is the tile server process compute-bound or I/O bound?
> >
>
> I'm not sure I fully understand that question, but I think it's
> compute-bound.
>
> >
> > I've contemplated something similar using an Odroid XU4 which has double
> > the RAM, clock, and # cores, USB3 instead of 2, Gb ethernet instead of
> > 100M, etc as compared to the raspberry pi 3.  We've used them at work for
> > virtualization (running VMs via qemu) and it's a pretty impressive little
> > board for under US$100. There's a new variant called the HC1 ("home
> cloud")
> > that forgoes several external connections but provides a SATA connector
> and
> > disk mount so it can be dedicated to storage. If it had an HDMI port i'd
> > probably already have one to make a tile server + xastir machine.  I do
> > have one that I'm using for a home file server and it's solid, as are the
> > 75 or so XU4s we have at work.
> >
>
> I've been looking for a more powerful Pi alternative, and it seems the
> reviews of a lot of them cite a lack of stability.  Good to know the Odroid
> XU4 has been solid for you.
>
> >
> > For the expense I'd probably be better off just going with a laptop, but
> I
> > can't quite let go of the idea of a linux touchscreen mounted on the
> dash.
> >
> > That does sound attractive.  I have a 2009 Netbook with an Atom
> processor.  I may try the local server thing next with that.
>
>
> Lee - K5DAT
>
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