[mkgmap-dev] splitter r247

Sun Dec 2 11:08:32 GMT 2012

Hi Lambertus,

okay, regarding performance I think it makes no sense to use a small max-areas value. The rule seems to be simple: The more passes, the longer the run time.
On the other hand, it would be good to know that the results are exactly the same  (same problem-list, same *.osm.gz, same areas.list). I've never tested that with planet, only 
with small areas.

Gerd 

Date: Fri, 30 Nov 2012 19:57:47 +0100
From: osm at na1400.info
To: mkgmap-dev at lists.mkgmap.org.uk
Subject: Re: [mkgmap-dev] splitter r247

    Maybe because I forgot to change the -max-areas setting the split
    took a lot longer then expected. It even did not finish yet. CPU
    usage is around 1 to 4% now, this doesn't look good. I've attached
    the log.

    The commandline I used was:

    java -agentlib:hprof=cpu=samples,depth=20
    -XX:-HeapDumpOnOutOfMemoryError -XX:+PrintGCTimeStamps
    -XX:+PrintGCDetails -Xmx6000m -jar splitter.jar  --output=xml
    --keep-complete --overlap=0 --no-trim --mapid=1 --max-nodes=1500000
    --max-areas=512 --write-kml=initial.kml
    --geonames-file=cities15000.zip planet-latest.osm.pbf

    I'll start the split again using --max-areas=2048

    On 30-11-12 01:53, GerdP wrote:

    > 

      > The results were ok, only runtime and memory usage was too
      high in

      > your case. r250 corrects this.

      > 

      > If you want to provide new logs, please run this version with
      java

      > -agentlib:hprof=cpu=samples,depth=20
      -XX:-HeapDumpOnOutOfMemoryError 

      > -XX:+PrintGCTimeStamps +PrintGCDetails -Xmx6000m -jar
      splitter.jar

      > .... --max-areas=2048

      > 

      > This should result in max. 2 hours runtime.

      > 

      > If you want to compare with the previous results, try also
      with 

      > --max-areas=255

      > 

      > Please send me the splitter log and the java.hprof .

      > 

      > Gerd

      > 

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