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 <[email protected] wrote: > On Sat, Dec 22, 2018 at 7:34 AM Jason KG4WSV <[email protected]> wrote: > > > On Fri, Dec 21, 2018 at 9:21 PM Lee Bengston <[email protected]> > > 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 > > < > https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail&utm_term=icon > > > Virus-free. > www.avast.com > < > https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail&utm_term=link > > > <#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2> > _______________________________________________ > Xastir mailing list > [email protected] > http://xastir.org/mailman/listinfo/xastir > _______________________________________________ Xastir mailing list [email protected] http://xastir.org/mailman/listinfo/xastir
