Get page size information

The function is used for obtaining the natural OS-specific page size in Bytes. getpagesize returns the OS-specific page size in Bytes for memory mapped files, while getdefaultpagesize returns a suggested page size. getalignedpagesize returns the pagesize as a multiple of the OS-specific page size in Bytes, which is the correct way to specify pagesize in ff.

getpagesize()
  getdefaultpagesize()
  getalignedpagesize(pagesize)

Arguments

pagesize

a desired pagesize in bytes

Value

An integer giving the page size in Bytes.

Author

Daniel Adler, Jens Oehlschlägel

Examples

  getpagesize()
#> [1] 4096
  getdefaultpagesize()
#> [1] 65536
  getalignedpagesize(2000000)
#> Warning: aligning pagesize 2e+06 with systempagesize 4096 to 2002944
#> [1] 2002944