#13 Cross Country Directions Hang Program

[unixxx]

Directions to locations outside of the starting
address's US state cause the program to hang and use
100% CPU power. I noticed there was a todo for cross
country travel but wasn't sure if it was referring to
this problem. I'm using Windows XP x64 with the
Roadnav v0.12 binaries.

[Richard Lynch]

Logged In: YES
user_id=1108678

It's a related issue. There's no fix at this time, but it's
one of the highest priorities issues facing Roadnav at this
time. In the meantime, make sure you've downloaded maps for
all of the counties that the route will pass through.
Otherwise, Roadnav will definitely hang trying to find a
path from the starting to ending point.

[Mark H. Zellers]

Logged In: YES
user_id=686026

I saw the same thing trying to navigate from Mountain
View, CA to Anaheim CA.

I discovered RoadNav as I was feverishly packing to go to
Disneyland, so this was my first attempt to use it. It
seemed to be continuously trying to recompute the route
and never succeeded in displaying anything.

I'll try to play with it some more this weekend and see
how it behaves on shorter routes.

I was running on a hyperthreaded 3.0GHz 32-bit laptop, so
I don't think the problem was that my machine was
underpowered.

[Mark H. Zellers]

Logged In: YES
user_id=686026

I just saw your reply. That could well have been the
cause of my hang too. The program seemed to automatically
download the maps it wanted for the start and end of the
route, but not the counties in between.

Hmmm... I'm surprised that the major interstates aren't
just part of the base map. If they were, I think that
would make the problem easier (rather than harder) as the
program would just have gotten me onto I-5 and then it
wouldn't need local road information until it got to
Orange county.

Mark Z.

[Richard Lynch]

Logged In: YES
user_id=1108678

Mark,

What version of Roadnav are you running?

Rich

[Mark H. Zellers]

Logged In: YES
user_id=686026

I'm running RoadNav 0.13 (just downloaded last Saturday
evening).

Now that I'm back from Disneyland and have internet access
again, I'll try playing with it some more.

I have some ideas for enhancements I'd like to experiment
with if I get a chance.

Mark Z.

[Mark H. Zellers]

Logged In: YES
user_id=686026

I gave it another try just now, with a MUCH shorter route
(my old commute, between zip codes 94043 and 94040).

It first computed a route and then went into a loop
continuously recomputing the route, but never letting the
UI do anything.

I turned off the voice prompts, but that did not seem to
help matters. I may have to try building it myself and
seeing what I can find in the debugger.

Mark Z.

[Mark H. Zellers]

Logged In: YES
user_id=686026

It looks like in my case, the problem may just be not
enough real memory. I took a look at task manager and
found that Roadnav's VM size was about 750MB, and I only
have 512MB of real memory on my laptop.

How much memory is requried to navigate and is there any
way to tune it down or do I just need to add more memory
to use the program?

Mark Z.

[Richard Lynch]

Logged In: YES
user_id=1108678

Routing eats up a lot of memory, but 512MB should be enough.
Is that 750MB when it's computing the route, or 750MB after
it's done?

Also, what address are you trying to go from and to?

Rich