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23 lines
1001 B
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$ java -Xmx64m ReadAllFail readAllLines medium.log
OutOfMemoryError: Java heap space
$ java -Xmx64m ReadAllFail readString medium.log
OutOfMemoryError: Java heap space
$ java -Xmx64m ReadAllFail readAllBytes medium.log
OutOfMemoryError: Java heap space
$ java -Xmx64m ReadAllFail readAllLines big.log
OutOfMemoryError: Java heap space
$ java -Xmx64m ReadAllFail readString big.log
OutOfMemoryError: Required array size too large
$ java -Xmx64m ReadAllFail readAllBytes big.log
OutOfMemoryError: Required array size too large
How much heap does the 200 MB file need? (readAllLines, then readString)
readAllLines -Xmx256m OutOfMemoryError: Java heap space
readString -Xmx256m survived: 200000016 chars
readAllLines -Xmx512m survived: 1378768 lines
readString -Xmx512m survived: 200000016 chars
readAllLines -Xmx1g survived: 1378768 lines
readString -Xmx1g survived: 200000016 chars
readAllLines -Xmx2g survived: 1378768 lines
readString -Xmx2g survived: 200000016 chars