I have the following situation – I’ve got a remote PC with an encrypted drive. If the PC needs a restart, I need to be physically present to enter the decryption password because I don’t have any way of ssh-ing to it before the OS is loaded.
I have a device that needs a block of memory that is reserved solely for it, without the OS intervening. Is there any way to tell BIOS or the OS that a block of memory is reserved, and it must not use it?
I know about swap – this question isn’t about that. In dmesg, the Linux (x86-64) kernel tells me this about how much memory I have:
Suppose a program asks for some memory, but there is not enough free memory left. There are several different ways Linux could respond. One response is to select some other used memory, which has not been accessed recently, and move this inactive memory to swap.
swappiness This control is used to define how aggressive the kernel will swap memory pages. Higher values will increase aggressiveness, lower values decrease the amount of swap. A value of 0 instructs the kernel not to initiate swap until the amount of free and file-backed pages is less than the high water mark in a … Read more
I want to monitor memory usage of a process, and I want this data to be logged. Does such a tool exist?
I would like to try compile mmu-less kernel. From what I found in configuration there is no option for such a thing. Is it possible to be done?
For a given process in /proc/<pid>/smaps, for a given mapping entry what are:
I’m wondering about the way Linux manages shared libraries. (actually I’m talking about Maemo Fremantle, a Debian-based distro released in 2009 running on 256MB RAM).