Java error when loading large .xls file

turbodudey · Post by **turbodudey** » Fri Dec 15, 2006 6:14 pm

When I try to open the logfile this message comes up:

It was a rather large datalog that I was trying to open. I was probably logging for over an hour. There was some really good stuff in that log though that I wanted to look at.

It says to "start application with memory parameters", but I'm not sure what exactly that means. (i'm not much of a java programmer)

Anyone seen this before, or know what in means?

LT401Vette · Post by **LT401Vette** » Fri Dec 15, 2006 6:25 pm

Actually that is not a Java error. I throw that on purpose just before you are about to get an Error. ou pretty much need to do what it says, or:
Download StartForBigFiles.zip from:
http://www.ideasandsolutions.biz/MegaLo ... Utilities/

take the bat file in side, copy it to your install dir. Usually c:\Program Files\Megasquirt\MegaLogViewer

Then double click it to start. Then you shouldn't get a memory error.

I have considered putting in a 2nd executable with these parameters, or more memory yet. By default I leave it using as little memory as possible for the old tuner laptops.

turbodudey · Post by **turbodudey** » Fri Dec 15, 2006 9:54 pm

Awsome! The batch file for big files worked. Now that I see what the batch file did I understand what that error was saying.

Thanks alot.

By the way, I love the MegaLogViewer. I use it all the time.

LT401Vette · Post by **LT401Vette** » Sat Dec 16, 2006 11:06 am

Now you have me thinking..
MLV already checks your processor performance, you can see your "Processor Score" by looking in the "Help -> about" dialog.
I am thinking I should change the startup command based on that score. That score is really based on processor more than memory, but I think it is probably safe to assume that if you have a ~1.5 GHz+ procressor, you probably have at least 512Mb + memory.

My work laptop gets a Processor score of about 30,000 with a 1.6 GHz and 2 Gb RAM
My home desktop gets 160,000 with a Core Duo 6300 @ 2.27 GHz and 2 Gb Ram

So the startup command in the batch file would be fine and let you load files over an hour easy enough. Heck by doubling the parameters in the batch I have loaded files 3-4 hours long.

In the end that is really sort of a bandaid. I really need to make MLV not dependent on all data in memory. It just hasn't presented enough trouble.