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There are five types of kernel-mode dumps: [18] Complete memory dump – contains full physical memory for the target system. Kernel memory dump – contains all the memory in use by the kernel at the time of the crash. Small memory dump – contains various info such as the stop code, parameters, list of loaded device drivers, etc.
A process can store data in memory-mapped files on memory-backed file systems, such as the tmpfs file system or file systems on a RAM drive, and map files into and out of the address space as needed. A set of processes may still depend upon the enhanced security features page-based isolation may bring to a multitasking environment.
Snapshots of computers' volatile memory (i.e. RAM) can be carved. Memory-dump carving is routinely used in digital forensics, allowing investigators to access ephemeral evidence. Ephemeral evidence includes recently accessed images and Web pages, documents, chats and communications committed via social networks.
In a "dual kernel" layout, kdump uses kexec to boot another kernel and obtain a memory dump. [3]: 10 In the event of a kernel crash, kdump preserves system consistency by booting another Linux kernel, which is known as the dump-capture kernel, and using it to export and save a memory dump.
In computer security, a cold boot attack (or to a lesser extent, a platform reset attack) is a type of side channel attack in which an attacker with physical access to a computer performs a memory dump of a computer's random-access memory (RAM) by performing a hard reset of the target machine.
Stop-and-copy garbage collection in a Lisp architecture: [1] Memory is divided into working and free memory; new objects are allocated in the former. When it is full (depicted), garbage collection is performed: All data structures still in use are located by pointer tracing and copied into consecutive locations in free memory.
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Core rope memory, also known as wire braid memory, [25] which couples drive lines to sense lines through ferrite cores, used where size, weight, and/or cost were critical. Core rope stores multiple bits of ROM per core (unlike normal read/write core memory), and was programmed by weaving "word line wires" inside or outside of ferrite ...