Nick Allen <nick.allen...@gmail.com> writes: > All my tracks, hiking, car & cycle, are 1 second interval, & I > frequently deal with multiple tracks created during the course of a > days cycling or walking. > > The majority of my tracks are created by a Garmin Oregon 300. When I
That's basically what I do, with Oregon 450 or Etrex Vista HCx. > Load the tracks (generally using file / append) my laptop screen dims But, what I do is viking gpx.viking track.gpx waypoint.gpx and start each time. I don't try to have a huge viking file with all of my tracks. Are you loading many tracks, and then trying to figure out which ones are ok to form a track to upload? If you could quantify what causes trouble that would help. I also map in osm (user gdt), but I just draw in josm with a track in the background. (Most of the ways I draw for which there isn't good imagery are in the woods, and being off 5m is totally unimportant compared to having the geometry/connectivity and rough position right.) I then look at later trips with viking, and if I see something that needs mapping/fixing, I load that trace in josm. (I don't upload gpx tracks at all.) > & everything freezes for several seconds, but always recovers. If > there are several tracks with many waypoints the programme may become I am not sure what's going on here. But I think that the issue is that viking makes lots of requests to X, and the X server spends lots of CPU time fulfilling them. And viking may be triggering memory leaks in X (but I have no evidence for that). When it is slow, does top/etc. show that viking or X is using all the cpu time, or something else, or ? > slower but still functions. However, I need to save the file at an > early stage, and then keep saving at regular intervals as I edit the > tracks, combining them, removing duplicates, and uploading them to OSM > etc. If I don't regularly save the whole laptop will freeze and not > recover, necessitating holding the power button for a few seconds to > switch it off, and then starting again. I don't have evidence of this, In theory viking cannot cause this. In practice I bet there is a kernel or X bug that is being triggered by viking. Does your computer have problems with anything else? It almost sounds like it could be a weak power supply. I use NetBSD, with an old graphics card (Intel 845 motherboard from 2006). I find that redrawing the viking window seems to be very slow, but I have not had any real computer/X instability issues. Tons of people use viking on ubuntu, it seems, so your issue is likely more localized. > but creating a track/route seems to use even more resources, so my > laptop may crash more often - again frequent saving stops this. > > It may be that a feature that regularly saves to disk at 2 minute > intervals would alleviate this? Sure, but only if saving only happens if the user asks for this somehow. I don't want to edit in viking - just examine mostly - but that's me. > I hasten to add, this is not a complaint - you asked, so I'm > answering. I'm a long term fan of viking & recommend it to friends. I > also think that Ubuntu may be partially to blame here, as the > performance of the laptops seems to have reduced over the last 2 > versions of Ubuntu. It's difficult for me to say if other programmes > can cause similar effects, but I do know that 'Evolution' the PIM > programme is resource heavy and can slow my system causing similar > problems. I think the problems partially depend on the other > programmes running - Thunderbird causes less problems than Evolution, > Chromium causes less problems than Firefox. Thanks for speaking up - I would say that while there's a non-viking bug, it seems pretty clear that viking uses more resources than people would like. > My computer is a laptop, Intel(R) Core(TM)2 CPU T7200 @ 2.00GHz with > 4GB of ram, running Ubuntu 11.10 (can also boot into windows 7, where > there is a version of Viking as well, but I rarely do this & don't > know if a similar problem exists). My laptop currently uses Viking > 1.2.1 from the ubuntu repository, but I have used other versions > loaded from git with the same results. I also make use of other > laptops of various specs. & other versions of viking with similar > results. That's a resaonably beefy machine. Mine is a single-core 3.4 GHz (desktop mobo) with 2G of ram. > I'm quite happy to try different versions, but you may have to keep > the instructions simple as I'm definitely a user as opposed to a > programmer! I have been struggling to find spare time to hack on things - but perhaps I will get to adding logging about start/stop redraw times in the track/waypoint layer.
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