On Thu, Nov 02, 2017 at 04:37:51PM +0000, andy_purcell@xxxxxxxxxxxx wrote: > > What do you mean by "device app runs to completion"? What is the "device > > app"? Is it the functionfs application you're talking about? And by "completion" > > do you mean that it completely stops running or is it just sleeping waiting for > > some input? > > "device app runs to completion" means an executable on the embedded > device starts, downloads a 70 Mbyte file from the PC to the device, > then exits. It is not waiting for input. This device app, when > running, consumes much memory and some of that memory is associated > with root file system files mounted over NFS. And where is your swap? What happens if you just do not have swap at all? > A colleague claims mlockall() does not help, and says it is not a good > idea anyway. That's not true, have you tried it? > I am afraid I have screwed up big time by using functionfs and am > feeling pressure to move things into the Linux kernel. If you disable swap, or use mlock, what happens? You never answered that... thanks, greg k-h -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
