On 28/10/15 11:47, Jacek Wielemborek wrote: > Hello, > > I noticed that after running "cat" on a huge file, I'm getting problems > with system responsiveness, probably because my Linux kernel threw away > all the cached files from the unallocated region of RAM. I read up and > heard that fadvise(input_desc, 0, 0, FADV_DONTNEED) could solve my > problem. I had this idea that perhaps it would make sense to add another > command-line switch to cat that would trigger this fadvise(), adding a > way to increase performance in some cases? I could write a patch if > you're interested.
Already mentioned at http://www.gnu.org/software/coreutils/rejected_requests.html http://lists.gnu.org/archive/html/bug-coreutils/2013-10/msg00011.html See 'direct' ' and 'nocache' at http://www.gnu.org/software/coreutils/dd thanks, Pádraig.
