VLC hogging up memory

Question

Well, I've spent the past hour or so trying to get DVD to play.  Playback in kplayer is very screwy, and ogle and vlc crash on startup.  However, I did get DVD playback in VLC by not using the menu.  However, it is using up almost all of the available memory on my system, as well as about 50~60% of my computer's swap space.  Any way to reduce the memory usage?

Answer 1

If this "report data" has a lot of blanks in the ArrayList<ArrayList<PrintData>>, then you could try using a sparse matrix. Then you don't need to hold an empty space in (what I am guessing is) a rectangular array for each blank. Instead of getting the data at coordinate [1, 5] as:
PrintData data = reportRow.get(1).get(5);You could make a Map:
Map<String, PrintData>and create the keys as a comma-separated String ("1,5"), only adding key-values for the non-blank locations. Or, define a Pair type:
class Pair
   private int row;
   private int column;
//constructor/getter/etc.--probably want to make them immutable, so the row/column could be final.
}and use that for the key ( new Pair(1,5) ), with appropriate hashCode and equals methods. I've done that, and it saved quite a lot of memory. Mine happened to have been ArrayList<ArrayList<Float>> (not my choice). For storing it to disk (a requirement), I temporarily created a full rectangular array of float (instead of serializing the Map, or serializing the ArrayList<ArrayList<Float>>), and saved 60% of the disk space comapred to the ArrayList<ArrayList<Float>> (because no overhead of ArrayList or Float objects). Then, when reading from disk, I built the new sparse matrix Map, throwing out all of the empty cells. You might be able to create a rectangular array of PrintData, or else just serialize the sparse matrix of PrintData.