On Thu, 13 Feb 2014, Raghavendra K T wrote: > I was able to test (1) implementation on the system where readahead problem > occurred. Unfortunately it did not help. > > Reason seem to be that CONFIG_HAVE_MEMORYLESS_NODES dependency of > numa_mem_id(). The PPC machine I am facing problem has topology like > this: > > numactl -H > --------- > available: 2 nodes (0-1) > node 0 cpus: 0 1 2 3 4 5 6 7 12 13 14 15 16 17 18 19 20 21 22 23 24 25 > ... > node 0 size: 0 MB > node 0 free: 0 MB > node 1 cpus: 8 9 10 11 32 33 34 35 ... > node 1 size: 8071 MB > node 1 free: 2479 MB > node distances: > node 0 1 > 0: 10 20 > 1: 20 10 > > So it seems numa_mem_id() does not help for all the configs.. > Am I missing something ? > You need the patch from http://marc.info/?l=linux-mm&m=139093411119013 first. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>