On Sun, Jul 7, 2019 at 11:13 PM Thomas Koenig <tkoe...@netcologne.de> wrote: > > Hello world, > > the attached patch sets the I/O block size for unformatted files to > 2**17 and makes this, and the block size for formatted files, > adjustable via environment variables.
Should the default be affected by the page size (sysconf(_SC_PAGESIZE)) and/or the IO blocksize (we already fstat() a file when we open it, so we could get st_blksize for free)? Though one could of course argue those aren't particularly useful; except for power, everything uses a 4k page size (?), and the IO blocksize varies from too small (4k, ext4) to too large (1 MB, NFS (or whatever rsize/wsize is set to), or 4 MB for Lustre). > 2019-07-07 Thomas König <tkoe...@gcc.gnu.org> > > PR libfortran/91030 > * gfortran.texi (GFORTRAN_BUFFER_SIZE_FORMATTED): Document > (GFORTRAN_BUFFER_SIZE_FORMATTED): Likewise. One of these should be _UNFORMATTED? -- Janne Blomqvist
