On 07/07/2014 03:30 PM, Andi Kleen wrote: > > Since the 16K stack change I noticed a number of problems with > my usual stress tests. They have a tendency to bomb out > because something cannot fork. As in ENOMEM or does something worse happen? > - AIM7 on a dual socket socket system now cannot reliably run >> 1000 parallel jobs. ... with how much RAM? > - LTP stress + memhog stress in parallel to something else > usually doesn't survive the night. > > Do we need to strengthen the memory allocator to try > harder for 16K? Can we even? The probability of success goes down exponentially in the order requested. Movable pages can help, of course, but still, there is a very real cost to this :( -hpa -- 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>