Low hardware tips and fine tunnings #102
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I think it's awesome that you try to run Timeshape on such a miniature device! I'd be really interested to get to the bottom of the problem. I'd say you should first try initializing it with a smaller bounding box plus disable Keep in mind the time zone should be completely covered with the bounding box you provide, that is, it should entirely inside the bounding box, not just overlap with it. Otherwise that zone will not be included in the index, potentially leaving it empty so that no queries would work at all. Regarding |
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For the whole mainland Europe (without England and Scandinavia) you could try these coordinates: minLat = 34.651, minLon = -13.623, maxLat = 60.229, maxLon = 28.521. The South America would be roughly -56.99, -82.62, 14.86, -32.34. By the way, what exactly is the problem you're facing with initializing? It just never finishes, or throws an error, or something else? |
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The error I receive, is an out of memory. Nov 15 08:28:44 kernel: Out of memory: Kill process 1579 (java) score 751 or sacrifice child Do you have any tips ? |
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How much total RAM do you have on that device? Maybe you could try to specify the Java heap and stack explicitly when you run your app, using the |
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I have around 512 MEGA for the whole device. I start with java -jar -Xms256m -Xmx512m. I wanted to ask also about calling the garbage collector after maybe doing that 1 query that I need. |
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I think you could try to set both So, call your program something like this: If 150m is not sufficient, e.g. if your program, besides Timeshape data, needs more than 150-128=22m, you could try to gradually raise that 150m limit. But in general, you should not specify the value of max heap equal to your whole amount of RAM, that's surely triggering the And that 128 MB number is for the whole world, if you only load a subset that number will be lower. |
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I am experiencing performance problems when calling
TimeZoneEngine.initialize();Because my machine is very low hardware ( like an old Raspberry Pi )
Im also saw this question: #73 so I would like to maybe do some fine tunnings like setting the accelerateGeometry to true. Maybe I could sacrifice some precision.
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