On Fri, 10 Jan 2014 11:58:30 -0600 Cliff Wickman <cpw at sgi.com> wrote: [snip] > Use O_DIRECT (raw) i/o for the dump and for the bitmaps file, so that writing > to those files does not allocate kernel memory for page cache. Hello Cliff, Have you tested O_DIRECT together with the new vmcore mmap interface? IIRC when we tried O_DIRECT together with mmap for some reason it did not work. Michael
