java - Is there an optimum point between saving data in memory and writing it to drive? -


i'm developing j2me application (with sdk 3.4) unused j2me se hazel j20i record gps data via location api.

neither cldc 1.1, midp 2.1, nor jsr-75 provide java.io.bufferedwriter. manually.

how have store gps readings (gps logging run indefinitely until stopped) in memory (variables) until have write on disk?

what best performance?

knowing write/read hard drive (sd card, etc.) cost more write/read memory (ram) suggest keep track off memory available while collecting gps data , define threshold write data hard drive. cannot tell optimum threshold. can keep track of memory that:

 long totalmemory = runtime.getruntime().totalmemory();  long freememory = runtime.getruntime().freememory();  if(threshold > freememory)      //1-write hard drive      //2-make sure use proper mechanism       //garbage collector (gc) job. ex: reinitialize data structures, set them null ...

note gc might take time before clearing memory, need handle because after clear data structures free memory wont become bigger right away 0 before gc job , won't go out of memory. don't need remind you have handle out of memory scenario! have nice day.


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