Hi All, I am using R-2.7.0 and am trying to Understand the memory Manager in it.
I am a bit confused about The Node Classes .Can Any one explain? *R-Internals states that ------------------------------- *The `small' vector nodes -- Class 1 to Class 6-- are able to store vector data of up to 8, 16, 32, 48, 64 and 128 bytes memory.c -------------- /* the number of VECREC's in nodes of the small node classes */ static int NodeClassSize[NUM_SMALL_NODE_CLASSES] = { 0, 1, 2, 4, 6, 8, 16 }; and a size of a VECREC on an x86 machine comes around 8 bytes.. Now when i allocate an array like > a=array(1:2^5) Upto a length of 2^5=32 seems to come under Class 6. But as per the above only upto 16 should come.. Why is the difference? This is how i verified -------------------------- I ran R -d ddd set a break point where it sets the node class. And printed out its value i also tried by adding a printf in memory.c,, [[alternative HTML version deleted]] ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel